Message Level Notes Condition MEL Item
RAT UNLOCKED Advisory Basic Ram air turbine unlocked. N/A
REV ISLN VAL Advisory Basic Either thrust reverser isolation 78-34-1
valve fault.
RUDDER PCU Status Basic Valve jammed in one or more 27-21-2
rudder power control units.
RUDDER RATIO Advisory Basic Rudder ratio system failure. None
SELCAL Comm E Basic Call is received via VHF, HF or N/A
SATCOM.
SINGLE AIR DATA Advisory Basic Both pilots have selected the N/A
same source of air data (ADIRU)
using their air data instrument
source select switches.
SPEEDBRAKES EXT Caution Basic Speedbrakes deployed during N/A
descent.
SPOILERS Warning Basic Spoilers not down for takeoff N/A
and takeoff thrust selected on
either engine.
SPOILERS Advisory Basic Spoiler system has detected one
or more faults and has shutdown one or more spoiler panel pairs.
STAB TRIM Advisory Basic One-half drive speed in flight or
on ground.
STABILIZER Warning Basic Stabilizer not in correct range for
takeoff and takeoff thrust
selected on either engine. 27-61-1
27-41-2 N/A
STANDBY BUS OFF Advisory Basic Standby bus unpowered. None
STBY INST PITOT Advisory Basic Standby Instruments pitot heat
power or continuity loss or incorrect power level.
STBY INVERTER Status Basic Standby inverter voltage output
outside normal limits with main battery switch on.
T-R UNIT Status Basic Left or right transformer rectifier
failure (DC bus tie closed).
TAT PROBE Advisory Basic Total Air Temperature probe
heat power or continuity loss.
30-33-1
B757 - 200 MINIMUM EQUIPMENT LIST
Message Level Notes Condition MEL Item
TCAS Advisory Option A component of TCAS (any one
of LRU, antenna, radio altimeter, or display) has failed.
TCAS FAIL Advisory Prov’n Traffic Collision Avoidance
System self detected fault.
TCAS OFF Advisory Basic TCAS has not been placed in
"TA" or "TA/RA" mode by crew. 34-61-2
34-61-2 N/A
TE FLAP ASYM Caution Basic Flap asymmetry. None
TE FLAP DISAGREE Caution Basic Flap disagreement with selected None
position.
TERR OVRD Advisory Option The EGPWS terrain awareness 34-46-1
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