Cessna 150 M — Emergency Procedures (independently worded)
NOT FOR FLIGHT — source fidelity: not_applicable | operational review: none | completeness: partial | 1 unresolved safety defect(s)
Source: authored — no source document
Rights: original_expression CC-BY-4.0
Checklist hash: 72ee9067691bbccd8cacbdc12785a8b62f02bf22165c9ded32abd12758fab643
Verify against the aircraft's own approved documentation before use.
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ENGINE FAILURE ON TAKEOFF (AT OR BEFORE LIFTOFF)  [EMERGENCY]
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  (Engine fails or loses significant power during the takeoff roll or immediately after liftoff)
[ ] Throttle [MEMORY] ............................................. CLOSE
[ ] Brakes — if still on the runway, apply firmly to stop on remaining runway [MEMORY] ... APPLY AS NEEDED
** CAUTION: 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.
[ ] Mixture [MEMORY] ........................................ IDLE CUTOFF
[ ] Ignition switch [MEMORY] ........................................ OFF
[ ] Master switch [MEMORY] .......................................... OFF
[ ] Land straight ahead — use flaps if altitude and airspeed permit; brace for impact

ENGINE FAILURE IN FLIGHT  [EMERGENCY]
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  (Complete or partial loss of engine power after takeoff with altitude available)
[ ] Airspeed — establish best glide immediately [MEMORY] ... BEST GLIDE SPEED PER POH
[ ] Select a suitable landing area within gliding range [MEMORY] ... SELECTED
[ ] Carburetor heat .................................................. ON
[ ] Fuel selector valve .................................. VERIFY BOTH ON
[ ] Mixture ........................................................ RICH
[ ] Primer ................................................ IN AND LOCKED
[ ] Ignition switch .................................... BOTH (VERIFY ON)
[ ] Throttle ............................... CHECK — TRY ADVANCING SLOWLY
[ ] If engine does not restart, proceed to Forced Landing checklist. Squawk 7700 and transmit MAYDAY on 121.5 MHz if time permits.

ENGINE FIRE IN FLIGHT  [EMERGENCY]
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  (Flames or smoke visible from the engine compartment during flight)
[ ] Mixture [MEMORY] ........................................ IDLE CUTOFF
[ ] Fuel selector valve [MEMORY] .................................... OFF
[ ] Throttle [MEMORY] .............. FULL OPEN (to consume fuel in lines)
[ ] Cabin heat and air vents [MEMORY] ... CLOSED (to prevent fumes entering cockpit)
[ ] Airspeed — increase to blow out fire if conditions allow ... INCREASE — DO NOT EXCEED VNE PER POH
[ ] Master switch ................................................... OFF
[ ] Execute immediate emergency landing — squawk 7700 and transmit MAYDAY if time permits

ENGINE FIRE ON GROUND (DURING START)  [EMERGENCY]
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  (Engine fire occurs during start or while engine is running on the ground)
[ ] Ignition switch [MEMORY] ... CONTINUE CRANKING to draw fire back into engine, if battery power remains
[ ] Throttle [MEMORY] ......................................... FULL OPEN
[ ] Mixture ................................................. IDLE CUTOFF
[ ] Fuel selector valve ............................................. OFF
[ ] Ignition switch ................................................. OFF
[ ] Master switch ................................................... OFF
[ ] Evacuate aircraft immediately — use fire extinguisher if available and fire is small
[ ] Call emergency services (911) and notify airport authority

ELECTRICAL FIRE / SMOKE IN COCKPIT  [EMERGENCY]
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  (Smoke or burning smell from electrical system or instrument panel)
[ ] Master switch [MEMORY] .......................................... OFF
[ ] All avionics and electrical switches [MEMORY] ................... OFF
[ ] Cabin vents ..................................... OPEN to clear smoke
[ ] If fire is extinguished and flight instruments are needed, turn master back ON and selectively restore only equipment required for safe arrival
[ ] Land as soon as practicable ................ NEAREST SUITABLE AIRPORT

LOSS OF OIL PRESSURE  [EMERGENCY]
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  (Oil pressure gauge drops below the green arc or to zero)
[ ] Throttle — reduce to minimum power needed to maintain flight [MEMORY] ... REDUCE POWER
[ ] Check oil pressure and oil temperature gauges — a simultaneous temperature rise confirms oil loss
[ ] Select landing area within gliding range ................... SELECTED
** CAUTION: 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.
[ ] Proceed to Forced Landing checklist — land as soon as possible

CARBURETOR ICE  [ABNORMAL]
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  (Unexplained RPM loss or rough running on fixed-pitch engine with no other apparent cause)
[ ] Carburetor heat [MEMORY] ...... FULL ON — LEAVE ON UNTIL RPM RECOVERS
[ ] Monitor RPM — an initial drop followed by recovery and smooth running confirms ice was present and is clearing
[ ] Mixture ................. RICHEN SLIGHTLY IF NEEDED FOR ROUGH RUNNING
[ ] Once RPM stabilises, consider whether to leave carb heat on or cycle it. If icing conditions persist, leave ON.
** NOTE: 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.

FORCED LANDING (POWER-OFF)  [EMERGENCY]
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  (Engine cannot be restarted; landing must be made without power)
[ ] Airspeed — establish and maintain best glide [MEMORY] ... BEST GLIDE SPEED PER POH
[ ] Select landing area — prefer open fields into the wind; assess surface, obstructions, and slope [MEMORY] ... SELECTED AND COMMITTED
[ ] Squawk 7700 and transmit MAYDAY on 121.5 MHz: aircraft type, position, altitude, intentions, souls on board
[ ] Fuel selector valve ............................................. OFF
[ ] Mixture ................................................. IDLE CUTOFF
[ ] Ignition switch ................................................. OFF
[ ] Flaps — extend on final to steepen approach and reduce touchdown speed ... EXTEND AS REQUIRED ON FINAL
[ ] Seat belts and harness .................................... TIGHTENED
[ ] Master switch ............................. OFF JUST BEFORE TOUCHDOWN
[ ] Aim to land at the slowest safe airspeed; touch down with as little groundspeed as possible and brace for deceleration