<?xml version="1.0" encoding="UTF-8"?>
<openChecklist version="1.0">
  <title>Cessna 150 M — Emergency Procedures (independently worded)</title>
  <contentHash>72ee9067691bbccd8cacbdc12785a8b62f02bf22165c9ded32abd12758fab643</contentHash>
  <aircraft make="Cessna" model="150" variant="M" category="standard_normal"/>
  <verification sourceFidelity="not_applicable" operationalReview="none" completeness="partial"/>
  <rights status="original_expression" license="CC-BY-4.0"/>
  <knownIssue severity="safety_defect">Contains no airspeeds, power settings, or other numerical limitations. Best glide speed, engine-out approach speed, and other critical values must come from the aircraft POH before this file can be used as a working emergency checklist.</knownIssue>
  <knownIssue severity="content_gap">Emergency procedures only. Normal operating procedures are in cessna-150m-normal.</knownIssue>
  <knownIssue severity="content_gap">Equipment variations across the 150 M production run may add or remove items. Verify against the specific aircraft and its POH.</knownIssue>
  <sections>
    <section id="engine-failure-takeoff" phase="engine_failure_before_rotation" criticality="emergency">
      <title>Engine Failure on Takeoff (At or Before Liftoff)</title>
      <item type="action" index="0" tickable="true" memoryItem="true" indent="0" id="eft-throttle">
        <text>Throttle</text>
        <response>CLOSE</response>
      </item>
      <item type="action" index="1" tickable="true" memoryItem="true" indent="0" id="eft-brakes">
        <text>Brakes — if still on the runway, apply firmly to stop on remaining runway</text>
        <response>APPLY AS NEEDED</response>
      </item>
      <item type="caution" index="2" tickable="false" memoryItem="false" indent="0">
        <text>Do NOT attempt to return to the runway from a low-altitude engine failure. Land ahead or in the best available area within approximately 30 degrees either side of the nose.</text>
      </item>
      <item type="action" index="3" tickable="true" memoryItem="true" indent="0" id="eft-mixture">
        <text>Mixture</text>
        <response>IDLE CUTOFF</response>
      </item>
      <item type="action" index="4" tickable="true" memoryItem="true" indent="0" id="eft-ignition">
        <text>Ignition switch</text>
        <response>OFF</response>
      </item>
      <item type="action" index="5" tickable="true" memoryItem="true" indent="0" id="eft-master">
        <text>Master switch</text>
        <response>OFF</response>
      </item>
      <item type="challenge" index="6" tickable="true" memoryItem="false" indent="0">
        <text>Land straight ahead — use flaps if altitude and airspeed permit; brace for impact</text>
      </item>
    </section>
    <section id="engine-failure-in-flight" phase="engine_failure_in_flight" criticality="emergency">
      <title>Engine Failure in Flight</title>
      <item type="action" index="0" tickable="true" memoryItem="true" indent="0" id="efif-airspeed">
        <text>Airspeed — establish best glide immediately</text>
        <response>BEST GLIDE SPEED PER POH</response>
      </item>
      <item type="action" index="1" tickable="true" memoryItem="true" indent="0" id="efif-landing-area">
        <text>Select a suitable landing area within gliding range</text>
        <response>SELECTED</response>
      </item>
      <item type="action" index="2" tickable="true" memoryItem="false" indent="0">
        <text>Carburetor heat</text>
        <response>ON</response>
      </item>
      <item type="action" index="3" tickable="true" memoryItem="false" indent="0">
        <text>Fuel selector valve</text>
        <response>VERIFY BOTH ON</response>
      </item>
      <item type="action" index="4" tickable="true" memoryItem="false" indent="0">
        <text>Mixture</text>
        <response>RICH</response>
      </item>
      <item type="action" index="5" tickable="true" memoryItem="false" indent="0">
        <text>Primer</text>
        <response>IN AND LOCKED</response>
      </item>
      <item type="action" index="6" tickable="true" memoryItem="false" indent="0">
        <text>Ignition switch</text>
        <response>BOTH (VERIFY ON)</response>
      </item>
      <item type="action" index="7" tickable="true" memoryItem="false" indent="0">
        <text>Throttle</text>
        <response>CHECK — TRY ADVANCING SLOWLY</response>
      </item>
      <item type="challenge" index="8" tickable="true" memoryItem="false" indent="0">
        <text>If engine does not restart, proceed to Forced Landing checklist. Squawk 7700 and transmit MAYDAY on 121.5 MHz if time permits.</text>
      </item>
    </section>
    <section id="engine-fire-in-flight" phase="engine_fire_in_flight" criticality="emergency">
      <title>Engine Fire in Flight</title>
      <item type="action" index="0" tickable="true" memoryItem="true" indent="0" id="efi-mixture">
        <text>Mixture</text>
        <response>IDLE CUTOFF</response>
      </item>
      <item type="action" index="1" tickable="true" memoryItem="true" indent="0" id="efi-fuel">
        <text>Fuel selector valve</text>
        <response>OFF</response>
      </item>
      <item type="action" index="2" tickable="true" memoryItem="true" indent="0" id="efi-throttle">
        <text>Throttle</text>
        <response>FULL OPEN (to consume fuel in lines)</response>
      </item>
      <item type="action" index="3" tickable="true" memoryItem="true" indent="0" id="efi-heat">
        <text>Cabin heat and air vents</text>
        <response>CLOSED (to prevent fumes entering cockpit)</response>
      </item>
      <item type="action" index="4" tickable="true" memoryItem="false" indent="0">
        <text>Airspeed — increase to blow out fire if conditions allow</text>
        <response>INCREASE — DO NOT EXCEED VNE PER POH</response>
      </item>
      <item type="action" index="5" tickable="true" memoryItem="false" indent="0">
        <text>Master switch</text>
        <response>OFF</response>
      </item>
      <item type="challenge" index="6" tickable="true" memoryItem="false" indent="0">
        <text>Execute immediate emergency landing — squawk 7700 and transmit MAYDAY if time permits</text>
      </item>
    </section>
    <section id="engine-fire-ground" phase="engine_fire_ground" criticality="emergency">
      <title>Engine Fire on Ground (During Start)</title>
      <item type="action" index="0" tickable="true" memoryItem="true" indent="0" id="efg-start">
        <text>Ignition switch</text>
        <response>CONTINUE CRANKING to draw fire back into engine, if battery power remains</response>
        <detail>Continued cranking may draw the fire into the induction system and extinguish it. If fire persists, proceed immediately to shutdown steps.</detail>
      </item>
      <item type="action" index="1" tickable="true" memoryItem="true" indent="0" id="efg-throttle">
        <text>Throttle</text>
        <response>FULL OPEN</response>
      </item>
      <item type="action" index="2" tickable="true" memoryItem="false" indent="0">
        <text>Mixture</text>
        <response>IDLE CUTOFF</response>
      </item>
      <item type="action" index="3" tickable="true" memoryItem="false" indent="0">
        <text>Fuel selector valve</text>
        <response>OFF</response>
      </item>
      <item type="action" index="4" tickable="true" memoryItem="false" indent="0">
        <text>Ignition switch</text>
        <response>OFF</response>
      </item>
      <item type="action" index="5" tickable="true" memoryItem="false" indent="0">
        <text>Master switch</text>
        <response>OFF</response>
      </item>
      <item type="challenge" index="6" tickable="true" memoryItem="false" indent="0">
        <text>Evacuate aircraft immediately — use fire extinguisher if available and fire is small</text>
      </item>
      <item type="challenge" index="7" tickable="true" memoryItem="false" indent="0">
        <text>Call emergency services (911) and notify airport authority</text>
      </item>
    </section>
    <section id="electrical-fire" phase="electrical_fire" criticality="emergency">
      <title>Electrical Fire / Smoke in Cockpit</title>
      <item type="action" index="0" tickable="true" memoryItem="true" indent="0" id="elecfire-master">
        <text>Master switch</text>
        <response>OFF</response>
      </item>
      <item type="action" index="1" tickable="true" memoryItem="true" indent="0" id="elecfire-avionics">
        <text>All avionics and electrical switches</text>
        <response>OFF</response>
      </item>
      <item type="action" index="2" tickable="true" memoryItem="false" indent="0">
        <text>Cabin vents</text>
        <response>OPEN to clear smoke</response>
      </item>
      <item type="challenge" index="3" tickable="true" memoryItem="false" indent="0">
        <text>If fire is extinguished and flight instruments are needed, turn master back ON and selectively restore only equipment required for safe arrival</text>
      </item>
      <item type="action" index="4" tickable="true" memoryItem="false" indent="0">
        <text>Land as soon as practicable</text>
        <response>NEAREST SUITABLE AIRPORT</response>
      </item>
    </section>
    <section id="oil-pressure-loss" phase="oil_system_malfunction" criticality="emergency">
      <title>Loss of Oil Pressure</title>
      <item type="action" index="0" tickable="true" memoryItem="true" indent="0" id="oil-power">
        <text>Throttle — reduce to minimum power needed to maintain flight</text>
        <response>REDUCE POWER</response>
      </item>
      <item type="challenge" index="1" tickable="true" memoryItem="false" indent="0">
        <text>Check oil pressure and oil temperature gauges — a simultaneous temperature rise confirms oil loss</text>
      </item>
      <item type="action" index="2" tickable="true" memoryItem="false" indent="0">
        <text>Select landing area within gliding range</text>
        <response>SELECTED</response>
      </item>
      <item type="caution" index="3" tickable="false" memoryItem="false" indent="0">
        <text>Low oil pressure may precede engine seizure with little additional warning. Do not delay the landing decision. Proceed to Forced Landing checklist if pressure remains low.</text>
      </item>
      <item type="challenge" index="4" tickable="true" memoryItem="false" indent="0">
        <text>Proceed to Forced Landing checklist — land as soon as possible</text>
      </item>
    </section>
    <section id="carburetor-ice" phase="carburetor_icing" criticality="abnormal">
      <title>Carburetor Ice</title>
      <item type="action" index="0" tickable="true" memoryItem="true" indent="0" id="cice-heat">
        <text>Carburetor heat</text>
        <response>FULL ON — LEAVE ON UNTIL RPM RECOVERS</response>
        <detail>Expect an initial further RPM drop as partially melted ice passes through the system. This is normal. Do not cycle the carb heat off prematurely. RPM should recover and stabilise once the ice has cleared.</detail>
      </item>
      <item type="challenge" index="1" tickable="true" memoryItem="false" indent="0">
        <text>Monitor RPM — an initial drop followed by recovery and smooth running confirms ice was present and is clearing</text>
      </item>
      <item type="action" index="2" tickable="true" memoryItem="false" indent="0">
        <text>Mixture</text>
        <response>RICHEN SLIGHTLY IF NEEDED FOR ROUGH RUNNING</response>
      </item>
      <item type="challenge" index="3" tickable="true" memoryItem="false" indent="0">
        <text>Once RPM stabilises, consider whether to leave carb heat on or cycle it. If icing conditions persist, leave ON.</text>
      </item>
      <item type="note" index="4" tickable="false" memoryItem="false" indent="0">
        <text>If RPM does not recover after applying full carburetor heat, the cause may be other than icing. Treat as partial engine failure and prepare for a precautionary landing.</text>
      </item>
    </section>
    <section id="forced-landing" phase="forced_landing" criticality="emergency">
      <title>Forced Landing (Power-Off)</title>
      <item type="action" index="0" tickable="true" memoryItem="true" indent="0" id="fl-airspeed">
        <text>Airspeed — establish and maintain best glide</text>
        <response>BEST GLIDE SPEED PER POH</response>
      </item>
      <item type="action" index="1" tickable="true" memoryItem="true" indent="0" id="fl-field">
        <text>Select landing area — prefer open fields into the wind; assess surface, obstructions, and slope</text>
        <response>SELECTED AND COMMITTED</response>
      </item>
      <item type="challenge" index="2" tickable="true" memoryItem="false" indent="0">
        <text>Squawk 7700 and transmit MAYDAY on 121.5 MHz: aircraft type, position, altitude, intentions, souls on board</text>
      </item>
      <item type="action" index="3" tickable="true" memoryItem="false" indent="0">
        <text>Fuel selector valve</text>
        <response>OFF</response>
      </item>
      <item type="action" index="4" tickable="true" memoryItem="false" indent="0">
        <text>Mixture</text>
        <response>IDLE CUTOFF</response>
      </item>
      <item type="action" index="5" tickable="true" memoryItem="false" indent="0">
        <text>Ignition switch</text>
        <response>OFF</response>
      </item>
      <item type="action" index="6" tickable="true" memoryItem="false" indent="0">
        <text>Flaps — extend on final to steepen approach and reduce touchdown speed</text>
        <response>EXTEND AS REQUIRED ON FINAL</response>
      </item>
      <item type="action" index="7" tickable="true" memoryItem="false" indent="0">
        <text>Seat belts and harness</text>
        <response>TIGHTENED</response>
      </item>
      <item type="action" index="8" tickable="true" memoryItem="false" indent="0">
        <text>Master switch</text>
        <response>OFF JUST BEFORE TOUCHDOWN</response>
      </item>
      <item type="challenge" index="9" tickable="true" memoryItem="false" indent="0">
        <text>Aim to land at the slowest safe airspeed; touch down with as little groundspeed as possible and brace for deceleration</text>
      </item>
    </section>
  </sections>
</openChecklist>
