KLM MD-11 - Engine out Operation; Unconfirmed EO PERF Page

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MD-11 Flight Crew Operations Manual

FMS -

Controls and Displays

FMS.30.118

Engine Out Operation

Unconfirmed EO PERF Page

The FMS ENGINE OUT mode predicts 1-Engine Out (EO) performance. If the

FCC detects an EO or the pilot pushes the ENG OUT key, a *CONFIRM ENG

OUT CLEAR* prompt appears for pilot selection. The actual EO or ENG OUT

key push is shown on the above modified PERF page. Pushing LSK 6R clears the

FMCFMC EO request. Confirming the EO request (LSK 6L) activates the

computations that provide EO maximum altitude and new MAX CLB, MAX

END and ECON speed targets. The climb/descent paths and fuel consumption

predictions are recomputed and displayed.

If an EO occurs during a standard instrument departure for which an EOSID is

provided in the database, the flight plan page will automatically appear with

*CONFIRM EOSID CLEAR*. Confirming the EOSID activates the EOSID flight

plan. If the database does not have an EOSID or the aircraft has flown past the

diversion point, the modified PERF page is displayed. The original SID and flight

plan will be flown as EO speeds/altitudes.

The T/O EO speed target is the speed obtained at the time of EO detection

(between V2 and V2 + 10) until the EO ACCEL altitude. At the EO ACCEL

altitude, the aircraft levels and accelerates to V3 and continues to climb at V3 until

reaching the all engine ACCEL altitude. The speed target will then become either

the next constraint speed or 250 KTS (whichever occurs first). T/O or G/A thrust

limit is maintained for EO operation until the following three conditions are met:

V3 or above is obtained, aircraft attains a clean configuration, altitude is above the

all engine ACCEL altitude.

After the conditions are met, thrust limit changes to MCT.

If the FCP altitude is set below the all engine ACCEL altitude, the ACCEL

altitude will be automatically edited when the FCC transitions to altitude capture.

Upon capture the FMS speed target will become VCL. Thrust cutback will not

occur until the FCC enters altitude hold and the configuration is clean.

LB1-3-0133

October 02, 2006