MD-11 Flight Crew Operations Manual
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Warning and Alerting -
Description and Operation
Warn.10.22
• Logic - cabin altitude more than 10,000’ (signal from CPCs thru ESC).
• Inhibit - takeoff (V1 to 400’ RA).
REMARKS - visual indications of CAB ALT are in red on overhead panel.
Landing Gear Not Down in Approach
AURAL - tone.
• Logic - gear not down and locked and flaps in land mode, throttles
retarded, airspeed less than 210 KTS, 1,200’ RA or below and flaps not in
land mode.
• Inhibit - takeoff (80 KTS to 400’ RA) and landing (100’ RA to 80 KTS).
VISUAL - white LANDING GEAR on EAD.
• Logic - any landing gear not down and locked in approach.
• Inhibit - none.
REMARKS - visual indication for landing gear is in red/green above gear handle
with independent back-up on configuration page.
Landing Gear Not Down in Landing
AURAL - tone and TOO LOW GEAR (GPWS) voice.
• Logic - airspeed less than 159 KTS and a/c below 245’, and airspeed less
than 190 KTS and a/c below 500’.
• Inhibit - windshear condition or DITCH switch enabled.
VISUAL - flashing red GROUND PROX on PFD.
• Logic - gear not down and locked and airspeed less than 159 KTS and a/c
below 145’, and airspeed less than 190 KTS and a/c below 500’.
• Inhibit - windshear condition or DITCH switch enabled.
REMARKS - none.
Engine(s) Fire
AURAL - continuous bell.
• Logic - engine fire detected.
• Inhibit - takeoff (V1 to 400’ RA) and landing (100’ RA to 80 KTS).
VISUAL - MASTER WARNING lights and red ENG (1, 2, 0r 3) FIRE alert.
• Logic - engine fire detected.
• Inhibit - MASTER WARNING lights inhibited on takeoff (V1 to 400’
RA).
REMARKS - visual indication on engine FIRE handles and on FUEL switches.
Decreasing Performance Windshear
AURAL - tone and WINDSHEAR voice.
November 10, 2008
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