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3. With flaps up, the configuration warning light and associated EICAS message will illuminate with at least one throttle at idle.
4. Close circuit breakers opened in step 1.
NOTE: Certain failures of the radio altimeter system will cause one or more of the following messages to be displayed:
AUTOPILOT
R/A DISAGREE
GRD PROX BITE (left R/A only)
B757 - 200 MINIMUM EQUIPMENT LIST
If the Ground Proximity Warning System with mult-source datalink is not receiving radio altitude information from at least one radio altimeter, the GND PROX SYS status message will be annunciated.
OPERATIONS (O) Observe MEL exceptions.
If the left radio altimeter is failed, the flight crew will see the following flight deck effects for the GEAR NOT DOWN warning:
If the landing gear is not down and locked, the flaps are retracted, and either engine throttle is at idle
the CONFIG warning light will illuminate and the GEAR NOT DOWN EICAS warning message will
annunciate; however, the siren will not sound and the master warning lights will not illuminate.
If the landing gear is not down and locked, the flaps are not fully retracted and either engine throttle is at idle, the gear not down warning will operate normally. That is, the CONFIG warning light will illuminate, the GEAR NOT DOWN EICAS warning message will annunciate, the siren will sound and the master warning lights will illuminate.
If the landing gear is not down and locked, the flaps are set at 25 or 30, and the throttles are at any position, the gear not down warning will operate normally. The CONFIG warning light will illuminate, the GEAR NOT DOWN EICAS warning message will annunciate, the siren will sound and the master warning lights will illuminate.
NOTE: TCAS requires only one Radio Altimeter for operation. If one Radio Altimeter fails, the flight crew will see no effect on TCAS.
NUMBER INSTALLED
NUMBER REQUIRED FOR DISPATCH
REMARKS OR EXCEPTIONS
- 0 May be inoperative provided operations do not require its use.
EICAS STATUS MESSAGES
None
PLACARD
As appropriate
OPERATIONS (O)
B757 - 200 MINIMUM EQUIPMENT LIST
The Terrain Awareness and Warning System (TAWS) is the Look-Ahead Display function of the Enhanced Ground Proximity Warning System.
EICAS STATUS MESSAGES
GRD PROX BITE
B757 - 200 MINIMUM EQUIPMENT LIST
PLACARD
Airplane flight log as appropriate - GND PROX SYS INOP or GND PROX MODE _ INOP OPERATIONS (O)
Terrain Avoidance Modes 1-4 inoperative:
A. The Flight Crew shall keep up their awareness of Airplane Configuration. Flight Path and Altitudes as high as possible by reducing other workload (e.g. by using Autopilot, Autoland, ILS and FMC) and reviewing thoroughly all relevant Minimum Altitudes.
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