Alpha Sierra Pilot

P2006T · Emergency Procedures · 13 of 15

Flying and Landing on One Engine

  1. 01 · LOCKEDEmergency Procedure Basics
  2. 02 · LOCKEDResponding to Alerts: Warnings and Cautions
  3. 03 · LOCKEDAlternator and Total Electrical Failures
  4. 04 · LOCKEDDoor Closure Failures
  5. 05 · LOCKEDAir Data, Display and Standby Instrument Failures
  6. 06 · LOCKEDEngine Parameter Exceedances
  7. 07 · LOCKEDLanding Gear Malfunctions
  8. 08 · LOCKEDEngine Fire and Cabin Smoke
  9. 09 · LOCKEDSecuring an Engine and Inflight Restart
  10. 10 · LOCKEDEmergency Descent and Spin Recovery
  11. 11 · LOCKEDIcing and Carburettor Heat
  12. 12 · LOCKEDFlap and Pitch Trim Control Failures

  13. 13 · READING NOW

    Flying and Landing on One Engine

    With one engine out, the aeroplane is asymmetric and every speed you fly has a different name and a different number. These are the figures that decide whether the remaining engine is helping you or simply rolling you over.

    At a glance

    • VMC (one engine inoperative, flaps T.O.)62 KIAS
    • VYSE, best rate of climb OEI80 KIAS at MTOW 1180 kg; 84 KIAS at MTOW 1230 kg
    • VXSE, best gradient OEI79 KIAS at MTOW 1180 kg; 83 KIAS at MTOW 1230 kg
    • Bank toward the operating engineabout 5°
    • OEI approach airspeedVYSE
    • OEI touchdown speed70 KIAS

    Controlling the asymmetry

    With one engine inoperative the asymmetric thrust yaws and banks the aircraft toward the dead engine. It is advisable to bank the aircraft about 5° to the side of the operating engine to improve directional control, and never to allow airspeed to drop below VMCA.

    The one-engine-inoperative speeds

    Three speeds carry the whole engine-out envelope, and two of them change with the maximum take-off weight.

    • VMC — minimum control speed, one engine inoperative, flaps set to T.O.: 62 KIAS

    • VYSE — best rate-of-climb speed OEI: 80 KIAS at MTOW 1180 kg; 84 KIAS at MTOW 1230 kg

    • VXSE — best gradient speed OEI: 79 KIAS at MTOW 1180 kg; 83 KIAS at MTOW 1230 kg

    Chart of the three one-engine-inoperative speeds: VMC 62 KIAS, VYSE 80 and 84 KIAS, and VXSE 79 and 83 KIAS at maximum take-off weights of 1180 and 1230 kilograms

    Figure: One-engine-inoperative speeds at both MTOWs (redrawn).

    The four climb figures sit within five knots of each other — memorize each speed with its weight as a pair, or they will blur together.

    One engine inoperative landing

    Steps 7 to 10 are flown on the final leg.

    1. Seat belts — tightly fastened

    2. Landing lights — as required

    3. Operating engine Fuel Selector — check feeding, crossfeed as required

    4. Inoperative engine Propeller Lever — CHECK FEATHER

    5. Inoperative engine — CHECK SECURED

    6. Operative engine Electrical fuel pump — ON

    7. Flap — T/O

    8. Landing gear — select DOWN, check 3 greens

    9. Approach Airspeed — VYSE

    10. Touchdown speed — 70 KIAS

    Check yourself

    • What is VMC, and under what flap setting is it quoted?

    • Give VYSE and VXSE at both maximum take-off weights.

    • Which way and by how much do you bank with one engine inoperative, and why?

    • What flap setting and approach speed apply on the final leg of an OEI landing?

    • What is the OEI touchdown speed?

    Study aid — always fly your aircraft's current AFM/POH.

    Source: AFM Doc. No. 2006/044, 4th Edition Rev. 21 (15 February 2024), p. S3-34..S3-35, S3-41, 4th Edition Rev. 21 (15 February 2024)

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  14. 14 · LOCKEDEngine Failure on Takeoff, in Climb and in Flight
  15. 15 · LOCKEDAbnormal and Forced Landings