{
  "open_checklist_version": "1.0",
  "id": "socata-tb20-normal",
  "title": "SOCATA TB 20 Trinidad — Normal Operating Procedures",
  "description": "Normal operating procedures for the SOCATA TB 20 Trinidad with Lycoming IO-540 fuel-injected engine, constant-speed propeller, and retractable tricycle gear. The TB 20 features car-style doors with a single lever for entry, side-stick-style yoke, and a fuel selector with LEFT/RIGHT/OFF positions. Some variants use a single-lever power control that couples the propeller and throttle; verify control configuration in the specific aircraft POH before flight. All airspeeds, power settings, fuel quantities, and performance data must come from the aircraft POH. Not a substitute for qualified instruction or a type-specific checkout.",
  "aircraft": {
    "make": "SOCATA",
    "model": "TB 20",
    "variant": "Trinidad",
    "icao_type": "TB20",
    "category": "standard_normal",
    "engine": [
      {
        "make": "Lycoming",
        "model": "IO-540",
        "type": "piston_4stroke",
        "count": 1
      }
    ],
    "propeller": "constant_speed",
    "gear": "retractable"
  },
  "units": {
    "airspeed": "kt",
    "altitude": "ft",
    "fuel": "usgal",
    "weight": "lb",
    "pressure": "inhg",
    "temperature": "f"
  },
  "provenance": {
    "source": {
      "kind": "none",
      "notes": "No manufacturer document consulted. Written from general familiarity with the type."
    },
    "transcription": {
      "method": "authored",
      "tool": "claude-sonnet-4-6",
      "date": "2026-08-11"
    },
    "contributors": [
      {
        "name": "Open Checklists project",
        "role": [
          "author"
        ]
      }
    ],
    "revision": {
      "file_revision": "0.1.0",
      "updated": "2026-08-11"
    }
  },
  "verification": {
    "source_fidelity": "not_applicable",
    "operational_review": "none",
    "completeness": "normal_only",
    "known_issues": [
      {
        "severity": "safety_defect",
        "description": "Contains no airspeeds, power settings, fuel quantities, or other numerical limitations — all must come from the specific aircraft POH.",
        "location": "whole file"
      },
      {
        "severity": "content_gap",
        "description": "Equipment variations exist across this model/variant. Verify items against the specific aircraft before use.",
        "location": "whole file"
      }
    ]
  },
  "rights": {
    "status": "original_expression",
    "corpus_license": "CC-BY-4.0",
    "redistribution": "attribution_required",
    "notes": "Manufacturer POH remains under copyright. This file does not reproduce its wording or selection of items."
  },
  "sections": [
    {
      "id": "preflight-walkaround",
      "phase": "preflight_inspection",
      "title": "Preflight Walk-Around",
      "items": [
        {
          "type": "action",
          "id": "preflight-walkaround-1",
          "text": "Aircraft documents (ARROW)",
          "response": "ON BOARD AND CURRENT",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-2",
          "text": "Weight and balance — computed for actual loading",
          "response": "WITHIN LIMITS PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-3",
          "text": "Fuel quantity — visually check both wing tanks and compare with fuel gauges",
          "response": "CONFIRMED; ADEQUATE FOR FLIGHT WITH REQUIRED RESERVES PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-4",
          "text": "Fuel grade — verify correct grade as placarded",
          "response": "CORRECT GRADE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-5",
          "text": "Fuel sump drains — sample both wing sumps and fuel strainer",
          "response": "CLEAR; NO WATER OR SEDIMENT",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-6",
          "text": "Fuel filler caps — both tanks",
          "response": "SECURED AND LOCKED FLUSH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-7",
          "text": "Engine oil level — dipstick removed, wiped, and re-checked",
          "response": "WITHIN OPERATING RANGE PER POH; CAP SECURE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-8",
          "text": "Engine compartment — fuel injection lines, oil hoses, and ignition leads",
          "response": "NO LEAKS, CHAFING, OR LOOSE FITTINGS",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-9",
          "text": "Induction air inlet and air filter",
          "response": "CLEAR AND UNOBSTRUCTED; FILTER SERVICEABLE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-10",
          "text": "Exhaust stacks and heat exchangers",
          "response": "NO CRACKS, CARBON SOOTING, OR LOOSE HARDWARE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-11",
          "text": "Engine cowling — all cowl fasteners and cowl flap (if fitted)",
          "response": "SECURED; COWL FLAP OPERATIONAL",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-12",
          "text": "Propeller blades and spinner — inspect each blade face, leading edge, and tip",
          "response": "NO NICKS, CRACKS, OR EROSION; SPINNER SECURE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-13",
          "text": "Nose gear — strut inflation, torque links, and shimmy damper",
          "response": "STRUT EXTENDED NORMALLY; HARDWARE SECURE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-14",
          "text": "Nose tire — condition and inflation",
          "response": "SERVICEABLE; PROPERLY INFLATED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-15",
          "text": "Pitot tube — cover removed; inlet unobstructed",
          "response": "COVER REMOVED; CLEAR",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-16",
          "text": "Static ports — both sides of fuselage",
          "response": "CLEAR AND UNOBSTRUCTED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-17",
          "text": "Left wing leading edge and upper/lower skin",
          "response": "NO IMPACT DAMAGE, DEFORMATION, OR FUEL STAINING",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-18",
          "text": "Left aileron — hinges, pushrod, and range of travel",
          "response": "SECURE; FULL AND FREE MOVEMENT",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-19",
          "text": "Left flap — hinge pins, actuator, and skin condition",
          "response": "SECURE; NO DAMAGE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-20",
          "text": "Left wingtip — navigation light lens and strobe",
          "response": "UNDAMAGED; LENS INTACT",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-21",
          "text": "Left main gear — strut extension, tire, brake pads, and gear door",
          "response": "STRUT NORMAL; TIRE SERVICEABLE; BRAKES ADEQUATE; DOOR UNDAMAGED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-22",
          "text": "Fuselage skin, antennas, and baggage door latch",
          "response": "NO DAMAGE; ANTENNAS SECURE; DOOR LATCHED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-23",
          "text": "Horizontal stabiliser and elevators — both sides; check hinge security and trim tab",
          "response": "UNDAMAGED; HINGES SECURE; NO EXCESSIVE PLAY",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-24",
          "text": "Vertical stabiliser and rudder — hinges and full deflection check",
          "response": "UNDAMAGED; MOVES FREELY",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-25",
          "text": "Tail beacon — lens and mounting",
          "response": "INTACT AND SECURE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-26",
          "text": "ELT — armed position and antenna connection",
          "response": "ARMED; ANTENNA CONNECTED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-27",
          "text": "Right main gear — strut, tire, brakes, and gear door",
          "response": "STRUT NORMAL; TIRE SERVICEABLE; BRAKES ADEQUATE; DOOR UNDAMAGED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-28",
          "text": "Right flap and right aileron — condition, hinges, and full travel",
          "response": "SECURE; FULL AND FREE MOVEMENT; NO DAMAGE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-29",
          "text": "Right wing leading edge, fuel cap, and tank vent",
          "response": "NO DAMAGE; CAP LOCKED; VENT CLEAR",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-30",
          "text": "Right wingtip — navigation and strobe lights",
          "response": "UNDAMAGED; LENS INTACT",
          "tickable": true
        },
        {
          "type": "action",
          "id": "preflight-walkaround-31",
          "text": "Tiedowns, chocks, and gust locks — all removed",
          "response": "ALL REMOVED",
          "tickable": true
        }
      ]
    },
    {
      "id": "before-start",
      "phase": "before_start",
      "title": "Cockpit Preparation / Before Start",
      "items": [
        {
          "type": "action",
          "id": "before-start-1",
          "text": "POH — aboard and accessible to crew",
          "response": "ON BOARD",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-2",
          "text": "Seats — fore/aft position locked; back angle secured",
          "response": "ADJUSTED AND LOCKED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-3",
          "text": "Seat belts and shoulder harnesses — all occupants",
          "response": "FASTENED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-4",
          "text": "Control lock (if installed)",
          "response": "REMOVED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-5",
          "text": "Flight controls — full travel in all axes",
          "response": "FREE AND CORRECT",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-6",
          "text": "Avionics master switch",
          "response": "OFF (before applying battery power)",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-7",
          "text": "Master switch (battery)",
          "response": "ON",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-8",
          "text": "Fuel quantity gauges — compare with visual inspection",
          "response": "CONSISTENT WITH VISUAL CHECK",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-9",
          "text": "Annunciator / warning lights — press-to-test",
          "response": "ALL LAMPS ILLUMINATE; NONE REMAIN LIT AFTER TEST",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-10",
          "text": "Landing gear position indicators",
          "response": "THREE GREEN — DOWN AND LOCKED CONFIRMED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-11",
          "text": "Gear warning horn — verify audible with throttle at idle",
          "response": "HORN SOUNDS",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-12",
          "text": "Fuel selector",
          "response": "LEFT OR RIGHT (fullest tank or per POH; NOT OFF)",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-13",
          "text": "Elevator trim",
          "response": "SET FOR TAKEOFF PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-14",
          "text": "Rudder trim",
          "response": "NEUTRAL OR PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-15",
          "text": "Propeller control (if separate from throttle)",
          "response": "FULL FORWARD — HIGH RPM",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-16",
          "text": "Mixture control",
          "response": "RICH (or per POH for field elevation)",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-17",
          "text": "Throttle (or single-lever control if so equipped)",
          "response": "CLOSED, THEN SLIGHTLY OPEN PER POH START PROCEDURE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-18",
          "text": "Flaps",
          "response": "UP — confirmed by position indicator",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-start-19",
          "text": "Parking brake",
          "response": "SET",
          "tickable": true
        }
      ]
    },
    {
      "id": "engine-start",
      "phase": "engine_start",
      "title": "Engine Start",
      "items": [
        {
          "type": "action",
          "id": "engine-start-1",
          "text": "Area around the aircraft — clear of persons and obstacles",
          "response": "CLEAR",
          "tickable": true
        },
        {
          "type": "action",
          "id": "engine-start-2",
          "text": "Fuel selector",
          "response": "LEFT OR RIGHT — confirm ON",
          "tickable": true
        },
        {
          "type": "action",
          "id": "engine-start-3",
          "text": "Mixture",
          "response": "RICH (or per POH for altitude)",
          "tickable": true
        },
        {
          "type": "caution",
          "id": "engine-start-c1",
          "text": "The IO-540 is fuel-injected — there is no carburetor. Follow the POH hot-start or cold-start procedure as appropriate. Priming with the fuel pump is typically required for a cold engine.",
          "tickable": false
        },
        {
          "type": "action",
          "id": "engine-start-4",
          "text": "Electric fuel pump — energise briefly for pre-start prime per POH",
          "response": "ON MOMENTARILY; FUEL PRESSURE CONFIRMED; THEN OFF",
          "tickable": true
        },
        {
          "type": "action",
          "id": "engine-start-5",
          "text": "Throttle — position per POH start procedure",
          "response": "SET PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "engine-start-6",
          "text": "Ignition switch",
          "response": "START — engage starter; release promptly after engine fires",
          "tickable": true
        },
        {
          "type": "action",
          "id": "engine-start-7",
          "text": "Oil pressure — verify rise within time limit per POH",
          "response": "RISING; WITHIN LIMIT",
          "tickable": true
        },
        {
          "type": "action",
          "id": "engine-start-8",
          "text": "Throttle — after engine stabilises",
          "response": "REDUCE TO IDLE RPM PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "engine-start-9",
          "text": "Mixture — after start",
          "response": "RICH FOR GROUND OPERATIONS (or per POH)",
          "tickable": true
        },
        {
          "type": "action",
          "id": "engine-start-10",
          "text": "Avionics master switch",
          "response": "ON",
          "tickable": true
        },
        {
          "type": "action",
          "id": "engine-start-11",
          "text": "Alternator — verify charging on ammeter or loadmeter",
          "response": "CHARGING NORMALLY",
          "tickable": true
        }
      ]
    },
    {
      "id": "after-start",
      "phase": "after_start",
      "title": "After Start / Before Taxi",
      "items": [
        {
          "type": "action",
          "id": "after-start-1",
          "text": "Oil pressure and oil temperature",
          "response": "WITHIN NORMAL RANGE PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-start-2",
          "text": "Engine instruments — fuel flow, cylinder head temperature, vacuum",
          "response": "ALL INDICATING NORMALLY",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-start-3",
          "text": "Flight instruments — altimeter set to current setting; gyros erecting",
          "response": "ALTIMETER SET; GYROS ERECT",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-start-4",
          "text": "Heading indicator — aligned with magnetic compass",
          "response": "ALIGNED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-start-5",
          "text": "Communication and navigation radios — frequencies set and volumes checked",
          "response": "SET AND CHECKED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-start-6",
          "text": "Transponder — code entered and in STANDBY",
          "response": "CODE SET; STANDBY",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-start-7",
          "text": "ATIS / weather information — obtain before taxi",
          "response": "RECEIVED; ALTIMETER SETTING NOTED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-start-8",
          "text": "Taxi / position lights — as required by conditions",
          "response": "ON AS NEEDED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-start-9",
          "text": "Parking brake — release when ready to taxi",
          "response": "RELEASED",
          "tickable": true
        }
      ]
    },
    {
      "id": "run-up",
      "phase": "before_takeoff",
      "title": "Run-Up / Before Takeoff",
      "items": [
        {
          "type": "action",
          "id": "run-up-1",
          "text": "Parking brake",
          "response": "SET",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-2",
          "text": "Flight controls — verify full and free movement in all three axes",
          "response": "FREE AND CORRECT",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-3",
          "text": "Trim — elevator, rudder set for takeoff",
          "response": "SET PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-4",
          "text": "Fuel selector — select appropriate tank; confirm NOT OFF",
          "response": "FULLEST TANK SELECTED; ON",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-5",
          "text": "Mixture",
          "response": "RICH (or per POH for field elevation)",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-6",
          "text": "Propeller control — FULL FORWARD before run-up",
          "response": "FULL FORWARD",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-7",
          "text": "Throttle — advance to run-up power setting per POH",
          "response": "RPM STABILISED AT RUN-UP SETTING",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-8",
          "text": "Magneto check — left, right, and BOTH",
          "response": "DROP ON EACH MAGNETO WITHIN LIMITS PER POH; SPREAD WITHIN LIMITS",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-9",
          "text": "Propeller cycle — advance to full forward, then reduce RPM and observe drop, then return to full forward",
          "response": "RPM DROP OBSERVED; OIL CIRCULATES THROUGH GOVERNOR; CONTROL RETURNS SMOOTHLY",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-10",
          "text": "Propeller control — after cycle confirm full forward",
          "response": "FULL FORWARD FOR TAKEOFF",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-11",
          "text": "Engine instruments at run-up power",
          "response": "OIL PRESSURE, OIL TEMP, FUEL FLOW, AND CHT ALL WITHIN LIMITS",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-12",
          "text": "Annunciator — all warning lights checked",
          "response": "NO AMBER OR RED LIGHTS",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-13",
          "text": "Throttle — reduce to idle after run-up check",
          "response": "SMOOTH IDLE; ENGINE DOES NOT STUMBLE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-14",
          "text": "Landing gear handle — confirm DOWN position",
          "response": "DOWN; THREE GREEN CONFIRMED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-15",
          "text": "Flaps — set for takeoff per POH",
          "response": "TAKEOFF POSITION; INDICATOR CONFIRMED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-16",
          "text": "Car-style doors — fully latched and secured",
          "response": "BOTH DOORS LATCHED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-17",
          "text": "Seat belts and shoulder harnesses — all occupants",
          "response": "FASTENED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-18",
          "text": "Departure briefing — takeoff direction, abort speed, and emergency landing area",
          "response": "BRIEFED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "run-up-19",
          "text": "Transponder",
          "response": "ALT (mode C)",
          "tickable": true
        }
      ]
    },
    {
      "id": "takeoff",
      "phase": "takeoff",
      "title": "Takeoff",
      "items": [
        {
          "type": "action",
          "id": "takeoff-1",
          "text": "Runway — confirm clear and on correct runway heading",
          "response": "CLEAR; CORRECT RUNWAY",
          "tickable": true
        },
        {
          "type": "action",
          "id": "takeoff-2",
          "text": "Landing light",
          "response": "ON",
          "tickable": true
        },
        {
          "type": "action",
          "id": "takeoff-3",
          "text": "Mixture",
          "response": "RICH OR PER POH FOR FIELD ELEVATION",
          "tickable": true
        },
        {
          "type": "action",
          "id": "takeoff-4",
          "text": "Propeller control",
          "response": "FULL FORWARD",
          "tickable": true
        },
        {
          "type": "action",
          "id": "takeoff-5",
          "text": "Throttle (or single-lever control) — apply smoothly to full power",
          "response": "FULL POWER; ENGINE INSTRUMENTS IN GREEN",
          "tickable": true
        },
        {
          "type": "action",
          "id": "takeoff-6",
          "text": "Directional control during ground roll",
          "response": "MAINTAIN RUNWAY CENTRELINE WITH RUDDER",
          "tickable": true
        },
        {
          "type": "action",
          "id": "takeoff-7",
          "text": "Airspeed — confirm indication alive as speed builds",
          "response": "ALIVE AND INCREASING",
          "tickable": true
        },
        {
          "type": "action",
          "id": "takeoff-8",
          "text": "Rotate — lift off at rotation speed",
          "response": "ROTATE SMOOTHLY PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "takeoff-9",
          "text": "Landing gear — retract after positive rate of climb confirmed and runway is behind",
          "response": "GEAR UP; INDICATOR CYCLES TO LIGHTS OUT",
          "tickable": true
        },
        {
          "type": "action",
          "id": "takeoff-10",
          "text": "Flaps — retract after safe climb speed achieved per POH",
          "response": "UP; INDICATOR CONFIRMED",
          "tickable": true
        }
      ]
    },
    {
      "id": "climb",
      "phase": "climb",
      "title": "Climb",
      "items": [
        {
          "type": "action",
          "id": "climb-1",
          "text": "Airspeed — establish climb speed per POH",
          "response": "Vy OR Vx AS APPROPRIATE PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "climb-2",
          "text": "Throttle and manifold pressure — set climb power",
          "response": "CLIMB POWER PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "climb-3",
          "text": "Propeller — set climb RPM per POH",
          "response": "CLIMB RPM PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "climb-4",
          "text": "Mixture — lean progressively as altitude increases per POH",
          "response": "ADJUSTED PER POH AND EGT; ENRICHED AS NEEDED NEAR TRAFFIC PATTERN",
          "tickable": true
        },
        {
          "type": "action",
          "id": "climb-5",
          "text": "Landing gear position — confirm up and lights extinguished",
          "response": "UP; LIGHTS OUT",
          "tickable": true
        },
        {
          "type": "action",
          "id": "climb-6",
          "text": "Flaps — confirm retracted",
          "response": "UP; CONFIRMED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "climb-7",
          "text": "Engine instruments — oil pressure, oil temperature, CHT, and fuel flow",
          "response": "ALL WITHIN NORMAL LIMITS PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "climb-8",
          "text": "Fuel selector — monitor tank balance; switch per POH fuel management",
          "response": "CORRECT TANK SELECTED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "climb-9",
          "text": "Altimeter and heading indicator",
          "response": "SET AND CROSSCHECKED",
          "tickable": true
        }
      ]
    },
    {
      "id": "cruise",
      "phase": "cruise",
      "title": "Cruise",
      "items": [
        {
          "type": "action",
          "id": "cruise-1",
          "text": "Manifold pressure — set for cruise power",
          "response": "CRUISE POWER PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "cruise-2",
          "text": "Propeller RPM — set cruise RPM",
          "response": "CRUISE RPM PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "cruise-3",
          "text": "Mixture — lean to best power or best economy per operating conditions and altitude",
          "response": "LEANED PER POH AND EGT INDICATION",
          "tickable": true
        },
        {
          "type": "action",
          "id": "cruise-4",
          "text": "Fuel selector — alternate tanks at intervals per POH fuel management schedule",
          "response": "APPROPRIATE TANK SELECTED; BALANCE MAINTAINED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "cruise-5",
          "text": "Engine instruments — periodic monitoring",
          "response": "OIL PRESSURE, OIL TEMP, CHT, AND FUEL FLOW WITHIN LIMITS",
          "tickable": true
        },
        {
          "type": "action",
          "id": "cruise-6",
          "text": "Fuel quantity — both tanks checked periodically",
          "response": "ADEQUATE REMAINING; BOTH TANKS NOTED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "cruise-7",
          "text": "Trim — adjust all axes for hands-off cruise flight",
          "response": "AIRCRAFT IN TRIM",
          "tickable": true
        },
        {
          "type": "action",
          "id": "cruise-8",
          "text": "Navigation — position confirmed against flight plan",
          "response": "ON COURSE; ESTIMATED TIMES UPDATED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "cruise-9",
          "text": "Weather — destination and alternate conditions reviewed enroute",
          "response": "WEATHER ACCEPTABLE; ALTERNATE VIABLE IF REQUIRED",
          "tickable": true
        }
      ]
    },
    {
      "id": "descent",
      "phase": "descent",
      "title": "Descent",
      "items": [
        {
          "type": "action",
          "id": "descent-1",
          "text": "Mixture — enrich gradually as altitude decreases",
          "response": "ENRICHED PER POH AND ALTITUDE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "descent-2",
          "text": "Power — reduce smoothly to avoid shock-cooling the cylinders",
          "response": "DESCENT POWER PER POH; CHT COOLING RATE ACCEPTABLE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "descent-3",
          "text": "Fuel selector — confirm appropriate tank selected; NOT OFF",
          "response": "LEFT OR RIGHT PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "descent-4",
          "text": "Engine instruments — monitor throughout descent",
          "response": "ALL WITHIN LIMITS",
          "tickable": true
        },
        {
          "type": "action",
          "id": "descent-5",
          "text": "ATIS or destination weather — obtain and note runway in use",
          "response": "INFORMATION RECEIVED; ALTIMETER SETTING NOTED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "descent-6",
          "text": "Altimeter — set to destination altimeter setting",
          "response": "SET",
          "tickable": true
        },
        {
          "type": "action",
          "id": "descent-7",
          "text": "Heading indicator — crosscheck and align with compass",
          "response": "ALIGNED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "descent-8",
          "text": "Approach briefing — runway, expected pattern entry, and missed approach plan",
          "response": "BRIEFED",
          "tickable": true
        }
      ]
    },
    {
      "id": "before-landing",
      "phase": "before_landing",
      "title": "Before Landing",
      "items": [
        {
          "type": "action",
          "id": "before-landing-1",
          "text": "Fuel selector — confirm appropriate tank selected; NOT OFF",
          "response": "LEFT OR RIGHT PER POH; NOT OFF",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-landing-2",
          "text": "Mixture",
          "response": "RICH (or adjusted for field elevation per POH)",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-landing-3",
          "text": "Propeller control — advance to full forward",
          "response": "FULL FORWARD — HIGH RPM",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-landing-4",
          "text": "Landing gear — extend at or below maximum gear extension speed per POH",
          "response": "GEAR HANDLE DOWN; THREE GREEN CONFIRMED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-landing-5",
          "text": "Gear warning horn — verify audible when power is reduced to approach setting",
          "response": "HORN SOUNDS WHEN THROTTLE REDUCED WITH GEAR UP",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-landing-6",
          "text": "Flaps — extend for approach per POH",
          "response": "FLAP POSITION SET; INDICATOR CONFIRMED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-landing-7",
          "text": "Seat belts and shoulder harnesses — all occupants",
          "response": "FASTENED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-landing-8",
          "text": "Landing light",
          "response": "ON",
          "tickable": true
        },
        {
          "type": "action",
          "id": "before-landing-9",
          "text": "Car-style doors — confirm both fully latched before threshold",
          "response": "LATCHED",
          "tickable": true
        }
      ]
    },
    {
      "id": "gear-check",
      "phase": "approach",
      "title": "Gear Check",
      "items": [
        {
          "type": "action",
          "id": "gear-check-1",
          "text": "Landing gear handle position",
          "response": "DOWN",
          "tickable": true
        },
        {
          "type": "action",
          "id": "gear-check-2",
          "text": "Gear position indicators — three green lights",
          "response": "THREE GREEN — DOWN AND LOCKED CONFIRMED",
          "tickable": true
        },
        {
          "type": "caution",
          "id": "gear-check-3",
          "text": "Verify three green gear lights on every approach. Gear-up landings are the most common class of retractable-gear accidents. Perform this check on every circuit, including touch-and-gos.",
          "tickable": false
        }
      ]
    },
    {
      "id": "landing",
      "phase": "landing",
      "title": "Landing",
      "items": [
        {
          "type": "action",
          "id": "landing-1",
          "text": "Final approach airspeed",
          "response": "PER POH FOR WEIGHT AND FLAP CONFIGURATION",
          "tickable": true
        },
        {
          "type": "action",
          "id": "landing-2",
          "text": "Three green gear lights — verify before crossing the threshold",
          "response": "THREE GREEN CONFIRMED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "landing-3",
          "text": "Flaps — confirm selected landing position",
          "response": "AT SELECTED POSITION; INDICATOR CONFIRMED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "landing-4",
          "text": "Runway alignment — track centreline throughout flare",
          "response": "ON CENTRELINE",
          "tickable": true
        },
        {
          "type": "action",
          "id": "landing-5",
          "text": "Touchdown — aim for smooth main-wheel contact then lower nose-wheel under control",
          "response": "SMOOTH TOUCHDOWN; NOSE WHEEL LOWERED GRADUALLY",
          "tickable": true
        },
        {
          "type": "action",
          "id": "landing-6",
          "text": "Brakes — apply after nose wheel is on the runway surface",
          "response": "APPLIED SMOOTHLY AND EVENLY AS NEEDED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "landing-7",
          "text": "Mixture — retain rich through the landing roll for immediate go-around capability",
          "response": "RICH",
          "tickable": true
        }
      ]
    },
    {
      "id": "go-around",
      "phase": "go_around",
      "title": "Go-Around / Missed Approach",
      "items": [
        {
          "type": "action",
          "id": "go-around-1",
          "text": "Throttle — apply full power smoothly",
          "response": "FULL POWER",
          "tickable": true
        },
        {
          "type": "action",
          "id": "go-around-2",
          "text": "Mixture",
          "response": "RICH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "go-around-3",
          "text": "Propeller control",
          "response": "FULL FORWARD",
          "tickable": true
        },
        {
          "type": "action",
          "id": "go-around-4",
          "text": "Pitch — establish positive climb attitude; maintain control with rudder against increased torque",
          "response": "CLIMB ATTITUDE; AIRSPEED TO Vy PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "go-around-5",
          "text": "Flaps — retract incrementally per POH; avoid large flap retraction at once from full flap",
          "response": "STAGED RETRACTION PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "go-around-6",
          "text": "Landing gear — retract after positive rate of climb is established",
          "response": "GEAR UP; CONFIRMED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "go-around-7",
          "text": "Airspeed — transition to normal climb speed once clear of obstacles",
          "response": "PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "go-around-8",
          "text": "ATC — advise of go-around intention as appropriate",
          "response": "ADVISED",
          "tickable": true
        }
      ]
    },
    {
      "id": "after-landing",
      "phase": "after_landing",
      "title": "After Landing",
      "items": [
        {
          "type": "action",
          "id": "after-landing-1",
          "text": "Flaps",
          "response": "RETRACT TO UP",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-landing-2",
          "text": "Transponder",
          "response": "STANDBY OR AS DIRECTED BY ATC",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-landing-3",
          "text": "Landing light",
          "response": "OFF OR AS DESIRED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-landing-4",
          "text": "Mixture — lean for taxi if operating on a long taxi at altitude per POH",
          "response": "ADJUSTED AS APPROPRIATE PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-landing-5",
          "text": "Fuel selector — note selected tank for shutdown planning",
          "response": "CONFIRM SELECTED TANK",
          "tickable": true
        },
        {
          "type": "action",
          "id": "after-landing-6",
          "text": "Brakes — test gently during initial movement off the runway",
          "response": "EFFECTIVE",
          "tickable": true
        }
      ]
    },
    {
      "id": "shutdown",
      "phase": "shutdown",
      "title": "Shutdown and Securing",
      "items": [
        {
          "type": "action",
          "id": "shutdown-1",
          "text": "Parking brake",
          "response": "SET",
          "tickable": true
        },
        {
          "type": "action",
          "id": "shutdown-2",
          "text": "Avionics master switch",
          "response": "OFF (before removing alternator from bus)",
          "tickable": true
        },
        {
          "type": "action",
          "id": "shutdown-3",
          "text": "Throttle — reduce to idle and allow engine to cool for a brief period per POH",
          "response": "IDLE; ENGINE COOLING",
          "tickable": true
        },
        {
          "type": "action",
          "id": "shutdown-4",
          "text": "Mixture",
          "response": "IDLE CUTOFF — pull to shutdown engine",
          "tickable": true
        },
        {
          "type": "action",
          "id": "shutdown-5",
          "text": "Ignition switch — after propeller stops",
          "response": "OFF",
          "tickable": true
        },
        {
          "type": "action",
          "id": "shutdown-6",
          "text": "Master switch",
          "response": "OFF",
          "tickable": true
        },
        {
          "type": "action",
          "id": "shutdown-7",
          "text": "Fuel selector",
          "response": "LEFT OR RIGHT (leave on selected tank or per POH / local procedures)",
          "tickable": true
        },
        {
          "type": "action",
          "id": "shutdown-8",
          "text": "Control lock (if installed)",
          "response": "INSTALLED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "shutdown-9",
          "text": "Pitot tube cover",
          "response": "INSTALLED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "shutdown-10",
          "text": "Flight time — Hobbs and tachometer recorded",
          "response": "LOGGED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "shutdown-11",
          "text": "Squawks and discrepancies — note any maintenance items",
          "response": "REVIEWED; LOGGED AS NEEDED",
          "tickable": true
        },
        {
          "type": "action",
          "id": "shutdown-12",
          "text": "Aircraft — tied down and chocked as conditions require",
          "response": "SECURED",
          "tickable": true
        }
      ]
    }
  ]
}