787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Management, Navigation -
Flight Management System
Operation
Copyright © The Boeing Company. See title page for details.
11.31.34 D615Z003-TBC
Condition: after VNAV activation, engine failure is sensed, airplane below engine
out acceleration height and below the thrust reduction point entered on the
TAKEOFF REF page.
Result: VNAV remains in VNAV SPD and commands a speed of V2 to V2 + 15.
Autothrottle remains in THR REF and the thrust limit remains takeoff (TO).
Condition: flaps out of UP and an engine out standard instrument departure (EO
SID) is in the FMC database.
Result: the FMC loads the EO SID as a flight plan modification. The modification
may be either executed or erased.
Condition: at acceleration height or flap retraction has started.
Result: VNAV commands an acceleration to VREF + 80, limited by the airplane
configuration (flap placard). Pushing the VNAV function key displays the ACT
VREF + 80 CLB page.
Condition: airplane has accelerated to the commanded VREF + 78 speed.
Result: thrust is automatically reduced from TO to continuous (CON) thrust. If the
engine failure occurs above the thrust reduction point, the current climb thrust is
maintained.
Condition: Select the ENG OUT> prompt on the VNAV CLB page to display the
applicable engine out performance data. The airline engine out company speed
(CO SPD) or long range cruise (LRC) speed may be selected. Execute to make the
data active.
Result: the FMC engine out climb function is active, VNAV is in VNAV SPD,
CON thrust is selected, if not previously selected. A different thrust limit may be
selected on the THRUST LIM page.
Climb (Engine Out above EO Max Alt)
When the airplane is above the engine out maximum altitude, selection of the
ENG OUT> prompt on the VNAV CLB page creates a modification and displays
the applicable engine out driftdown (D/D) performance data to enable the airplane
to descend to the engine out maximum altitude. Execution of the modification
activates the engine out driftdown function.
2
Sensed Engine Failure
3
EO SID
4
Acceleration Height
5
Thrust Reduction
6
VNAV Climb (Engine Out)
August 14, 2009
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