{
  "open_checklist_version": "1.0",
  "id": "cessna-172l-skyhawk-c172l-abbreviated-checklist-millstone-valley",
  "title": "Cessna 172L Skyhawk — c172l_abbreviated_checklist_millstone_valley",
  "aircraft": {
    "make": "Cessna",
    "model": "172L Skyhawk",
    "category": "standard_normal"
  },
  "units": {
    "airspeed": "mph",
    "fuel": "usgal"
  },
  "speeds": {
    "vr": 65,
    "vx": 68,
    "vy": 84,
    "va": 111,
    "vs": 54,
    "vso": 47,
    "vfe": 97,
    "vno": 147,
    "vne": 184,
    "best_glide": 75,
    "demonstrated_crosswind": 15
  },
  "provenance": {
    "source": {
      "kind": "third_party_checklist",
      "title": "Cessna/172L Skyhawk/c172l_abbreviated_checklist_millstone_valley.txt"
    },
    "transcription": {
      "method": "format_conversion",
      "date": "2026-08-13",
      "converted_from": "doc"
    },
    "contributors": [
      {
        "name": "Open Checklists project",
        "role": [
          "transcriber"
        ]
      }
    ],
    "revision": {
      "file_revision": "0.1.0",
      "updated": "2026-08-13"
    }
  },
  "verification": {
    "source_fidelity": "unreviewed",
    "operational_review": "none",
    "completeness": "full",
    "known_issues": [],
    "reviews": [
      {
        "type": "source_comparison",
        "reviewer": "ai-dual-pass-review",
        "date": "2026-08-14",
        "notes": "Automated AI review: two independent transcription passes + numeric/item-count disagreement resolution. Not human-verified; baseline for community correction."
      }
    ]
  },
  "rights": {
    "status": "licensed",
    "upstream_holder": "freechecklists.net",
    "upstream_license": "content-reuse permission granted by the site author for this replacement project",
    "notes": "Transcribed from the freechecklists.net archive under the author's reuse grant. Individual checklist wording may be substantially the source's; per-file contributor authorship is unknown."
  },
  "sections": [
    {
      "phase": "before_start",
      "title": "BEFORE STARTING ENGINE",
      "criticality": "normal",
      "items": [
        {
          "type": "action",
          "text": "Exterior Preflight",
          "response": "COMPLETE",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Tach/Hobbs Meter",
          "response": "RECORD",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Seats, Belts, Harnesses",
          "response": "ADJUST & LOCKED",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Fuel Shutoff Valve",
          "response": "ON BOTH",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Radios & Electrical Equipment",
          "response": "OFF",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Brakes",
          "response": "TEST & SET",
          "tickable": true,
          "source_confidence": 1.0
        }
      ]
    },
    {
      "phase": "engine_start",
      "title": "STARTING ENGINE",
      "criticality": "normal",
      "items": [
        {
          "type": "action",
          "text": "Mixture",
          "response": "RICH",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Carburetor Heat",
          "response": "COLD",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Master Switch",
          "response": "ON",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Prime",
          "response": "AS REQUIRED",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Throttle",
          "response": "OPEN ¼ INCH",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Propeller Area",
          "response": "CLEAR",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Ignition Switch",
          "response": "START (release when engine starts)",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Oil Pressure",
          "response": "CHECK",
          "tickable": true,
          "source_confidence": 1.0
        }
      ]
    },
    {
      "phase": "before_takeoff",
      "title": "BEFORE TAKEOFF",
      "criticality": "normal",
      "items": [
        {
          "type": "action",
          "text": "Cabin Doors",
          "response": "LATCHED",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Flight Controls",
          "response": "FREE & CORRECT",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Elevator Trim",
          "response": "TAKEOFF POSITION",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Fuel Shutoff Valve",
          "response": "ON BOTH",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Brakes",
          "response": "SET",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Throttle",
          "response": "1700 RPM",
          "tickable": true,
          "source_confidence": 1.0,
          "value": {
            "quantity": "rpm",
            "unit": "rpm",
            "comparison": "equal",
            "target": 1700
          }
        },
        {
          "type": "action",
          "text": "Magnetos",
          "response": "CHECK — 125 MAX DROP / 50 MAX DIFF",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Carburetor Heat",
          "response": "CHECK FOR RPM DROP",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Engine Instruments and Ammeter",
          "response": "CHECK",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Suction Gauge",
          "response": "CHECK",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Flight Instruments and Radio",
          "response": "SET",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Throttle Friction Lock",
          "response": "ADJUST",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Wing Flaps",
          "response": "AS REQUIRED",
          "tickable": true,
          "source_confidence": 1.0
        }
      ]
    },
    {
      "phase": "takeoff",
      "title": "TAKE-OFF",
      "criticality": "normal",
      "items": [
        {
          "type": "subtitle",
          "text": "Normal Takeoff",
          "tickable": false,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Wing Flaps",
          "response": "UP (0)",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Carburetor Heat",
          "response": "COLD",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Throttle",
          "response": "FULL OPEN",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Elevator Control",
          "response": "LIFT NOSE WHEEL AT 65 MPH",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Climb Speed",
          "response": "80 - 90 MPH",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "subtitle",
          "text": "Maximum Performance Takeoff",
          "tickable": false,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Wing Flaps",
          "response": "10 DEGREES",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Carburetor Heat",
          "response": "COLD",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Brakes",
          "response": "HOLD",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Throttle",
          "response": "FULL OPEN",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Brakes",
          "response": "RELEASE",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Elevator Control",
          "response": "SLIGHTLY TAIL LOW",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Climb Speed",
          "response": "68 MPH (with obstacles ahead)",
          "tickable": true,
          "indent": 1,
          "source_confidence": 1.0
        }
      ]
    },
    {
      "phase": "climb",
      "title": "ENROUTE CLIMB",
      "criticality": "normal",
      "items": [
        {
          "type": "action",
          "text": "Airspeed",
          "response": "80 – 100 MPH",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Throttle",
          "response": "FULL OPEN",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Mixture",
          "response": "RICH (Unless engine is rough)",
          "tickable": true,
          "source_confidence": 1.0
        }
      ]
    },
    {
      "phase": "cruise",
      "title": "CRUISE",
      "criticality": "normal",
      "items": [
        {
          "type": "action",
          "text": "Power",
          "response": "2200 to 2500 (No more than 75%)",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Elevator Trim",
          "response": "ADJUST",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Mixture",
          "response": "RICH BELOW 3000",
          "tickable": true,
          "source_confidence": 1.0
        }
      ]
    },
    {
      "phase": "before_landing",
      "title": "BEFORE LANDING",
      "criticality": "normal",
      "items": [
        {
          "type": "action",
          "text": "Mixture",
          "response": "RICH",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Carburetor Heat",
          "response": "ON (apply before closing throttle)",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Airspeed",
          "response": "70-80 MPH (flaps up)",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Wing Flaps",
          "response": "AS DESIRED (below 100 MPH)",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Airspeed",
          "response": "60-70 MPH (flaps down)",
          "tickable": true,
          "source_confidence": 1.0
        }
      ]
    },
    {
      "phase": "go_around",
      "title": "BALKED LANDING",
      "criticality": "abnormal",
      "items": [
        {
          "type": "action",
          "text": "Throttle",
          "response": "FULL OPEN",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Carburetor Heat",
          "response": "COLD",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Wing Flaps",
          "response": "RETRACT TO 20",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Airspeed",
          "response": "84 MPH",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Wing Flaps",
          "response": "RETRACT (slowly)",
          "tickable": true,
          "source_confidence": 1.0
        }
      ]
    },
    {
      "phase": "landing",
      "title": "NORMAL LANDING",
      "criticality": "normal",
      "items": [
        {
          "type": "action",
          "text": "Touchdown",
          "response": "MAIN WHEELS FIRST",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Landing Roll",
          "response": "LOWER NOSE WHEEL GENTLY",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Braking",
          "response": "MINIMUM REQUIRED",
          "tickable": true,
          "source_confidence": 1.0
        }
      ]
    },
    {
      "phase": "after_landing",
      "title": "AFTER LANDING",
      "criticality": "normal",
      "items": [
        {
          "type": "action",
          "text": "Wing Flaps",
          "response": "UP",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Carburetor Heat",
          "response": "COLD",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Unnecessary Equipment",
          "response": "OFF",
          "tickable": true,
          "source_confidence": 1.0
        }
      ]
    },
    {
      "phase": "securing",
      "title": "SECURING AIRCRAFT",
      "criticality": "normal",
      "items": [
        {
          "type": "action",
          "text": "Parking Brake",
          "response": "SET (Normally Not Used)",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Radios, Electrical Equipment",
          "response": "OFF",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Mixture",
          "response": "IDLE CUT-OFF",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Magnetos",
          "response": "OFF",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Master Switch",
          "response": "OFF",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Control Lock",
          "response": "INSTALL",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Tach/Hobbs Meter",
          "response": "RECORD",
          "tickable": true,
          "source_confidence": 1.0
        }
      ]
    },
    {
      "phase": "reference",
      "title": "C172L Airspeeds (MPH Indicated)",
      "criticality": "normal",
      "items": [
        {
          "type": "action",
          "text": "Vr",
          "response": "65",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Vx",
          "response": "68",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Vy",
          "response": "84",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Va",
          "response": "111",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Vs",
          "response": "54",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Vso",
          "response": "47",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Vfe",
          "response": "97",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Vno",
          "response": "147",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Vne",
          "response": "184",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Best Glide",
          "response": "75",
          "tickable": true,
          "source_confidence": 1.0
        },
        {
          "type": "action",
          "text": "Demonstrated X-Wind",
          "response": "15 Knots",
          "tickable": true,
          "source_confidence": 1.0
        }
      ]
    }
  ]
}