{
  "open_checklist_version": "1.0",
  "id": "cessna-210n-emergency",
  "title": "Cessna 210 N Centurion — Emergency Procedures",
  "description": "Emergency procedures for the Cessna 210 N Centurion with Continental TSIO-520 turbocharged engine, constant-speed propeller, and retractable tricycle gear. Memory items are marked. All airspeeds and numeric limits must come from the specific aircraft POH. The TSIO-520 is fuel-injected — no carburetor icing. Retractable gear requires specific gear-unsafe procedures. Not a substitute for recurrent emergency training or qualified instruction.",
  "aircraft": {
    "make": "Cessna",
    "model": "210",
    "variant": "N",
    "icao_type": "C210",
    "category": "standard_normal",
    "engine": [
      {
        "make": "Continental",
        "model": "TSIO-520",
        "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": "partial",
    "known_issues": [
      {
        "severity": "safety_defect",
        "description": "Contains no airspeeds, power settings, fuel quantities, manifold pressure limits, or other numerical limitations — all must come from the specific aircraft POH.",
        "location": "whole file"
      },
      {
        "severity": "content_gap",
        "description": "Equipment and avionics vary widely across 210 N airframes. Verify every item against the specific aircraft and its POH 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": "engine-failure-before-rotation",
      "phase": "engine_failure_before_rotation",
      "title": "Engine Failure on Takeoff — Before or At Liftoff",
      "criticality": "emergency",
      "items": [
        {
          "type": "action",
          "id": "efbr-throttle",
          "text": "Throttle",
          "response": "CLOSE IMMEDIATELY",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "efbr-brakes",
          "text": "Brakes — apply firmly to stop within remaining runway",
          "response": "APPLIED",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "efbr-mixture",
          "text": "Mixture",
          "response": "IDLE CUTOFF",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "efbr-magnetos",
          "text": "Ignition",
          "response": "OFF",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "efbr-master",
          "text": "Master switch",
          "response": "OFF",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "text": "If airborne with insufficient altitude for return — land ahead",
          "response": "MAINTAIN WINGS LEVEL; LAND ON AVAILABLE SURFACE AHEAD OR WITHIN NARROW ANGLE OF RUNWAY HEADING",
          "tickable": true,
          "detail": "Do not attempt to turn back to the runway at low altitude. The 210 does not glide well with gear extended; if gear is up and landing is immediate, leave it up."
        },
        {
          "type": "action",
          "text": "Fuel selector",
          "response": "OFF",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Occupants",
          "response": "ADVISE TO BRACE FOR IMPACT",
          "tickable": true
        }
      ]
    },
    {
      "id": "engine-failure-after-takeoff",
      "phase": "engine_failure_after_takeoff",
      "title": "Engine Failure After Takeoff — Airborne, Low Altitude",
      "criticality": "emergency",
      "items": [
        {
          "type": "action",
          "id": "efat-glide",
          "text": "Airspeed — establish best glide immediately",
          "response": "PER POH",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "efat-landing-area",
          "text": "Landing area — select a suitable surface ahead within glide range",
          "response": "SELECTED; DO NOT TURN BACK BELOW SAFE ALTITUDE",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "efat-throttle",
          "text": "Throttle",
          "response": "FULL — attempt restart if time permits",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "text": "Fuel selector",
          "response": "SWITCH TO FULLEST TANK",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Mixture",
          "response": "RICH",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Ignition switch",
          "response": "BOTH (confirm ON)",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Alternate air control",
          "response": "OPEN — check for induction blockage",
          "tickable": true
        },
        {
          "type": "action",
          "text": "If restart fails — secure engine and prepare for forced landing",
          "response": "FOLLOW FORCED LANDING CHECKLIST",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Landing gear — extend only when landing is assured on the chosen surface",
          "response": "DOWN; THREE GREEN CONFIRMED",
          "tickable": true
        }
      ]
    },
    {
      "id": "engine-failure-in-flight",
      "phase": "engine_failure_in_flight",
      "title": "Engine Failure in Flight",
      "criticality": "emergency",
      "items": [
        {
          "type": "action",
          "id": "efif-glide",
          "text": "Airspeed — establish best glide",
          "response": "PER POH",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "efif-landing-area",
          "text": "Landing area — identify best available field within glide range",
          "response": "SELECTED",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "text": "Fuel selector",
          "response": "SWITCH TO FULLEST TANK",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Mixture",
          "response": "RICH",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Throttle",
          "response": "FULL — attempt restart",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Ignition switch",
          "response": "BOTH — confirm ON; try START if engine windmilling",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Alternate air control",
          "response": "OPEN",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Primer (if equipped)",
          "response": "IN AND LOCKED",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Mayday call — squawk 7700; declare emergency on 121.5 or local frequency",
          "response": "TRANSMITTED; ATC NOTIFIED",
          "tickable": true
        },
        {
          "type": "action",
          "text": "If engine does not restart — secure and prepare for forced landing",
          "response": "FOLLOW FORCED LANDING CHECKLIST",
          "tickable": true
        }
      ]
    },
    {
      "id": "engine-fire-in-flight",
      "phase": "engine_fire_in_flight",
      "title": "Engine Fire in Flight",
      "criticality": "emergency",
      "items": [
        {
          "type": "action",
          "id": "efi-mixture",
          "text": "Mixture",
          "response": "IDLE CUTOFF",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "efi-fuel",
          "text": "Fuel selector",
          "response": "OFF",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "efi-throttle",
          "text": "Throttle",
          "response": "FULL OPEN — to exhaust any residual fuel",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "efi-master",
          "text": "Master switch",
          "response": "OFF",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "text": "Heat and vents",
          "response": "OFF — deny cockpit air from engine compartment",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Airspeed — increase to slip speed or dive per POH to blow out fire",
          "response": "INCREASE; DO NOT EXCEED VNE",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Ignition switch",
          "response": "OFF",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Emergency descent — if fire persists, descend at maximum safe speed; declare Mayday",
          "response": "DESCENT INITIATED; ATC NOTIFIED; SQUAWK 7700",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Land as soon as possible",
          "response": "PREPARE FOR PRECAUTIONARY OR FORCED LANDING",
          "tickable": true
        }
      ]
    },
    {
      "id": "engine-fire-ground",
      "phase": "engine_fire_ground",
      "title": "Engine Fire on Ground",
      "criticality": "emergency",
      "items": [
        {
          "type": "action",
          "id": "efg-starter",
          "text": "Throttle — close; crank engine with starter to draw fire back into induction",
          "response": "THROTTLE CLOSED; STARTER ENGAGED IF FIRE IS INDUCTION-ONLY",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "efg-mixture",
          "text": "Mixture",
          "response": "IDLE CUTOFF",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "efg-fuel",
          "text": "Fuel selector",
          "response": "OFF",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "text": "Master switch",
          "response": "OFF",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Ignition switch",
          "response": "OFF",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Evacuate aircraft immediately",
          "response": "ALL OCCUPANTS CLEAR; MOVE UPWIND OF AIRCRAFT",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Fire extinguisher",
          "response": "USE FROM UPWIND IF FIRE IS ACCESSIBLE WITHOUT RISK; CALL 911 / AIRPORT FIRE",
          "tickable": true
        }
      ]
    },
    {
      "id": "electrical-fire",
      "phase": "electrical_fire",
      "title": "Electrical Fire / Smoke in Cockpit",
      "criticality": "emergency",
      "items": [
        {
          "type": "action",
          "id": "elec-master",
          "text": "Master switch",
          "response": "OFF",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "elec-avionics",
          "text": "Avionics master and all avionics",
          "response": "OFF",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "elec-vents",
          "text": "Vents — open to clear smoke; do not open if smoke increases",
          "response": "OPEN AS APPROPRIATE",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "text": "Circuit breakers — identify the faulted circuit; do not reset a hot breaker",
          "response": "FAULTED CIRCUIT IDENTIFIED AND ISOLATED",
          "tickable": true
        },
        {
          "type": "action",
          "text": "If fire extinguished — restore essential electrical items one at a time",
          "response": "RESTORE ITEMS SELECTIVELY; MONITOR FOR RECURRENCE",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Master switch — restore if needed for safe flight; monitor for repeat fault",
          "response": "ON IF NEEDED; MONITOR AMMETER",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Land as soon as practicable",
          "response": "DIVERT TO NEAREST SUITABLE AIRPORT",
          "tickable": true
        }
      ]
    },
    {
      "id": "oil-pressure-loss",
      "phase": "oil_system_malfunction",
      "title": "Loss of Oil Pressure",
      "criticality": "emergency",
      "items": [
        {
          "type": "action",
          "id": "oil-reduce-power",
          "text": "Power — reduce immediately to minimum necessary for flight",
          "response": "POWER REDUCED",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "text": "Oil pressure gauge and oil temperature — monitor both",
          "response": "CHECK BOTH; LOW PRESSURE WITH RISING TEMP INDICATES IMMINENT FAILURE",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Land as soon as possible — do not delay; engine seizure may be imminent",
          "response": "DIVERTING TO NEAREST SUITABLE AIRPORT",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Mayday — declare emergency if engine failure expected",
          "response": "TRANSMITTED; ATC NOTIFIED; SQUAWK 7700",
          "tickable": true
        },
        {
          "type": "note",
          "text": "If oil pressure reads zero but temperature remains normal, the gauge or sender may be faulty. Treat as engine failure and land immediately regardless — do not continue flight.",
          "tickable": false
        }
      ]
    },
    {
      "id": "forced-landing",
      "phase": "forced_landing",
      "title": "Forced Landing (Power-Off)",
      "criticality": "emergency",
      "items": [
        {
          "type": "action",
          "id": "fl-glide",
          "text": "Airspeed — establish and maintain best glide speed",
          "response": "PER POH",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "id": "fl-field",
          "text": "Landing field — select the best available surface; plan to arrive high rather than low",
          "response": "SELECTED; PATTERN PLANNED",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "text": "Mayday — squawk 7700; transmit position and intentions on 121.5 or last ATC frequency",
          "response": "TRANSMITTED",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Transponder",
          "response": "7700",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Fuel selector",
          "response": "OFF",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Mixture",
          "response": "IDLE CUTOFF",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Ignition switch",
          "response": "OFF",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Landing gear — extend only when landing is assured on the chosen field; leave retracted for off-airport soft-field landing if preferred per POH",
          "response": "DOWN AND LOCKED (three green) OR RETRACTED AS APPROPRIATE",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Flaps — extend on final when field is made",
          "response": "AS REQUIRED PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Master switch",
          "response": "OFF BEFORE TOUCHDOWN",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Doors — unlatch before touchdown to prevent jamming",
          "response": "UNLATCHED",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Occupants — brief to brace for impact",
          "response": "ADVISED",
          "tickable": true
        }
      ]
    },
    {
      "id": "gear-unsafe",
      "phase": "landing_gear_malfunction",
      "title": "Gear Unsafe / Abnormal Gear Indication",
      "criticality": "emergency",
      "condition": "One or more gear position lights not showing green after gear handle placed DOWN",
      "items": [
        {
          "type": "action",
          "id": "gu-go-around",
          "text": "Go-around — do not land with abnormal gear indication",
          "response": "CLIMB AND ASSESS",
          "tickable": true,
          "memory_item": true
        },
        {
          "type": "action",
          "text": "Gear handle — cycle UP then DOWN; allow full travel time",
          "response": "CYCLED; CHECK LIGHTS AGAIN",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Gear warning horn — note whether it sounds with throttle reduced",
          "response": "HORN STATUS NOTED",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Circuit breaker for gear system — check; reset once if tripped",
          "response": "CHECKED; RESET IF TRIPPED",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Low airspeed and high-G maneuver — a brisk coordinated turn may dislodge stuck gear",
          "response": "ATTEMPT IF ALTITUDE PERMITS PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "text": "ATC — advise of gear problem; request fly-by for tower visual confirmation if available",
          "response": "ATC NOTIFIED; FLY-BY REQUESTED IF APPLICABLE",
          "tickable": true
        },
        {
          "type": "action",
          "text": "If gear does not indicate down — follow Emergency Gear Extension procedure",
          "response": "PROCEED TO MANUAL EXTENSION",
          "tickable": true
        },
        {
          "type": "action",
          "text": "If gear still unsafe after all attempts — land with minimum runway required; use foam or grass if available; keep occupants advised",
          "response": "PREPARED FOR BELLY LANDING IF REQUIRED",
          "tickable": true
        }
      ]
    },
    {
      "id": "emergency-gear-extension",
      "phase": "landing_gear_malfunction",
      "title": "Emergency Gear Extension (Manual Override)",
      "criticality": "emergency",
      "condition": "Normal gear extension has failed to produce three-green indication",
      "items": [
        {
          "type": "action",
          "text": "Airspeed — reduce to below gear extension speed",
          "response": "BELOW VLO PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Gear handle",
          "response": "DOWN",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Manual gear extension — locate and operate the hand crank or manual release per POH for the specific aircraft",
          "response": "MANUAL RELEASE OPERATED PER POH",
          "tickable": true,
          "detail": "The 210 N uses a hand-crank emergency extension system. Refer to the aircraft-specific POH for the exact location and number of turns required. The procedure varies by serial number and any STC modifications."
        },
        {
          "type": "action",
          "text": "Allow time for gravity and airflow to extend and lock the gear",
          "response": "SUFFICIENT TIME ALLOWED PER POH",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Gear position lights",
          "response": "CHECK FOR THREE GREEN",
          "tickable": true
        },
        {
          "type": "action",
          "text": "Gear warning horn — confirm silent with throttle at approach power and gear down",
          "response": "HORN SILENT (GEAR LOCKED) OR HORN SOUNDS (GEAR UNSAFE)",
          "tickable": true
        },
        {
          "type": "action",
          "text": "If three green — proceed with normal landing; land at minimum speed",
          "response": "CLEARED TO LAND; AVOID HARD TOUCHDOWN",
          "tickable": true
        },
        {
          "type": "action",
          "text": "If not three green — advise ATC; prepare for gear-up landing",
          "response": "ATC NOTIFIED; FOAM REQUESTED IF AVAILABLE; OCCUPANTS BRIEFED",
          "tickable": true
        }
      ]
    }
  ]
}