How do you handle engine failure in a single-engine aircraft?

In a single-engine aircraft, an engine failure is handled by maintaining control, pitching immediately for the published best-glide speed, choosing a reachable landing area, carrying out the restart checklist if time permits, declaring an emergency, and completing the forced-landing checklist. The aircraft’s published procedure and trained memory items always take priority.

For real-world flying, use the Pilot’s Operating Handbook (POH) or Aircraft Flight Manual (AFM) for that exact model. Speeds, fuel-system logic, propeller controls, landing-gear policy and restart limits vary; never transfer a piston-aircraft checklist to a turboprop.

What should you do first after the engine fails?

First, fly the aircraft: establish a safe glide before troubleshooting, using the radio or reading a checklist.

1. Set the glide. Lower the nose enough to prevent an aerodynamic stall, establish the published best-glide speed and trim. Best glide maximises still-air distance rather than time aloft; minimum-sink speed is a different figure. For a common training-aircraft example, we explain the speed, trimming and range considerations for a Cessna 172.
2. Select a landing area. Pick somewhere comfortably within gliding range, allowing altitude for turns and an approach. Consider wind, slope, surface, length, obstacles and access for rescue crews.
3. Run the emergency procedure. Complete trained memory items first, then use the written checklist when workload allows. Do not spend the available altitude diagnosing the engine while leaving the landing decision until the last moment.
4. Declare an emergency. Transmit MAYDAY three times, followed by the call sign, aircraft type, problem, position, altitude, intentions and number of people aboard. If there is no response on the working frequency, use 121.5 MHz; select transponder code 7700 when equipped. Communication remains secondary to control and landing.
5. Fly the forced landing. Use a familiar approach pattern if height permits, keep the chosen site within reach and delay drag-producing configuration changes until landing is assured. Complete the shutdown and cabin-preparation items at the points specified by the aircraft checklist.

Should you try to restart the engine?

Attempt a restart only when sufficient altitude and attention remain after the aircraft is under control and a landing area has been selected.

In a piston aircraft, the POH may direct checks of the fuel selector, usable fuel, auxiliary pump, mixture, carburettor heat or alternate air, throttle, magnetos and starter. Those controls are not present or operated identically in every aircraft, so use them in the published order rather than treating a generic flow as a checklist. A windmilling propeller does not prove that the engine is producing power.

Turboprops have different relight, starter and propeller-feathering limitations. If the failure followed severe vibration, oil-pressure loss, smoke, fire, propeller damage or an obvious mechanical break-up, repeated restart attempts may make matters worse. Follow the fire or severe-engine-damage procedure instead.

What if the engine still produces partial power?

Treat partial power as temporary because a rough or surging engine may stop completely without warning.

Keep a landing site available, use only power that runs smoothly and follow the abnormal checklist. If the engine recovers, land at the nearest suitable airfield rather than assuming the fault has cleared. Do not trade a reachable field for a distant runway that depends on the engine continuing to run.

Can you turn back to the runway after take-off?

A low-altitude turnback should not be attempted by habit; unless it was pre-briefed, trained and is clearly achievable, land ahead or within the safest controllable sector.

The so-called impossible turn requires more than 180 degrees of turning to return and align with the runway. Reaction delay, bank angle, increased load factor and the final alignment consume altitude, while a take-off into wind can produce a fast downwind landing after the turnback.

There is no universal safe turnback altitude. It changes with aircraft type, runway length, wind, weight, density altitude, terrain and pilot proficiency. A valid decision height must be established through aircraft-specific instruction at a safe altitude, with a margin for the startle and delay of a real failure. An altitude copied from another pilot or aircraft is not a safe planning figure.

How do you choose a forced-landing site?

The best forced-landing site is reachable with margin and offers the clearest approach, longest usable surface and lowest touchdown risk.

• Prefer a known runway when it is genuinely within glide range, but do not stretch the glide trying to reach one.
• Account for wind and slope. A headwind and uphill surface usually reduce groundspeed, although obstacles and surface condition may outweigh either advantage.
• Inspect the approach. Roads can conceal power lines, traffic, signs, central barriers and sharp bends. Fields may contain fences, irrigation equipment, ditches, crops or soft ground.
• Commit early. Repeatedly changing sites wastes altitude and makes a planned approach less likely.
• Configure at the right time. Extend flaps only when the landing point is assured. Retractable-gear use on rough ground, soft surfaces or water is aircraft- and procedure-specific; there is no safe universal gear-up rule.

Never raise the nose below best-glide speed to stretch the approach. That increases the descent angle and stall risk rather than creating extra range. Touch down at the lowest practical speed while maintaining positive control, then evacuate if there is fire, smoke or significant fuel leakage.

Fuel, ignition and electrical systems should be secured when the forced-landing checklist directs. Switching off the master too early can remove electrically operated flaps, landing gear, lighting or radio equipment that is still needed.

What mistakes make an engine-out landing worse?

The most serious mistakes spend altitude or attention before a safe landing is assured.

• Allowing airspeed to decay while trying to hold altitude after power disappears.
• Looking inside to troubleshoot before selecting a landing area.
• Trying to stretch the glide or turning steeply close to the stall.
• Changing landing sites repeatedly instead of flying a stable approach.
• Extending flaps or landing gear before the selected surface is assured.
• Making radio calls while aircraft control is deteriorating.
• Attempting an unplanned runway turnback from insufficient height.

How should pilots practise engine failures safely?

Real-aircraft engine-failure training should be conducted with a qualified instructor using the applicable POH, local procedures and adequate height. Practice should include failures during different flight phases, landing-site selection, checklist use and a pre-take-off brief defining the response if power is lost.

A desktop simulator is useful for practising the scan, checklist flow, radio call and landing decisions, but its glide performance, propeller drag and restart modelling may not match the real aircraft. Our MSFS 2024 engine-out practice sequence provides a structured rehearsal, not a substitute for aircraft-specific instruction.