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15-21
P I LOT T R A I N I N G GU I D E
Landing Gear Manual Release
Figure 15-12
Landing Gear EICAS Displays
Figure 15-13
P604_15_029
M
A
N
U
A
L
R
E
L
A
G
L
E
A
S
E
N
D
I
N
G
E
A
R
PUSH
FULLY TO
STOW
LGG PULL
Landing Gear Manual
Release Handle
To manually extend
landing gear: pull handle
through detented
positions
To stow handle: depress
button and slowly return
the handle to the stowed
position
Gear Position Indicators
Located on the EICAS primary
page, these boxes will show one
of five conditions;
Gear is up and locked
Gear is down and locked
Gear is in transition
Gear is not safe
Gear is in an unknown position
UP
DN
EICAS PRIMARY PAGE
P604_15_018
BRT BRT
DN DN DN
- GEAR - - FLAPS -
STAB
- TRIM -
20
NU
ND
4.0
RUDDER
AIL
LWD RWD
NL NR
LANDING GEAR / BRAKES
15-22 For Training Purposes Only
Jan 04
P I LOT T R A I N I N G GU I D E
EICAS Messages
EICAS Messages
Table 15-4
MESSAGE MEANING AURAL WARNING
(IF ANY)
GEAR DISAGREE Landing gear position does not match the gear lever
position.
“GEAR
DISAGREE”
MLG BAY OVHT High temperature detected in the main landing gear wheel
bins.
“GEAR BAY
OVERHEAT”
NOSE DOOR OPEN Nose doors are open 10 seconds after the landing gear is
locked in position, or when airspeed is > 250 KIAS. “NOSE DOOR”
PARKING BRAKE
The parking brake is set with the aircraft in the takeoff
mode with N1 greater than 70% rpm. “CONFIG BRAKE”
A/SKID INBD
The respective anti-skid channel has failed or is not armed.
A/SKID OUTBD
INBD BRAKE PRESS
The respective brake system pressure is below 1015 psi.
OUTBD BRAKE PRESS
MLG OVHT FAIL The overheat detection loop in the gear bay is shorted out.
PARK BRAKE SOV The parking brake shutoff valve does not match the commanded position.
PROX SYS Indicates a failure in the PSEU output circuitry (may be accompanied by GND
SPLRS message).
STEERING INOP Nosewheel steering has failed.
WOW INPUT The PSEU is unable to determine if the aircraft is airborne or on the ground (WOW
CH 1 & CH 2 disagree).
WOW OUTPUT One or more of the PSEU outputs do not match the input.
A/SKID IN TEST Anti-skid system is in self-test.
PARKING BRAKE ON
The parking brake is activated, aircraft not in takeoff mode (WOW and N1 less
than 70% rpm).
PROX SYS FAULT Indicates a failure in the proximity sensor electronics unit.
WOW OUTPUT FAIL Indicates a weight-on-wheels output fault in a noncritical system.

　
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