Service difficulty report · Transmission · Boeing 75733N

Difficulty date
July 9, 2024
Submitted
July 15, 2024
Operation
Air carrier
Aircraft
N57869
Make and model
Boeing 75733N
Aircraft serial
32593
Aircraft time
61,379 hours, 18,537 cycles
Part
Transmission
Part number
251N42049
Part serial
65444
Condition
Faulted
Location
Te Flap
Part time
61,379 hours, 18,537 cycles
Stage of operation
LD
How discovered
O
Nature of condition
F
Precautionary procedure
B

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

TE FLAP DISSAGREE INDICATED F25 WITH HANDL E IN F30. EMERGENCY LANDING CREW STATED SOME TIME AFTER TOUCHDOWN AND ARRIVING TO THE GATE FLAPS WENT DOWN TO 30 AND MESSAGE WENT AWAY. FOUND LEFT WING OUTBOARD FLAP OUTBOARD TRANSMISSION OVERLOAD INDICATOR TRIPPED. ALL OTHER TRANSMISSION FLUID AND TRIP INDICATORS ARE GOOD. RESET TRIPPED TRANSMISSION AS REQUIRED. REF FIM 27-51 FAULT TREE 808. VERIFIED INSTALLATION OF TEE GEARBOX IN REF. TO AMM 27-51-18-424-019 UP TP STEP F ( 11 ) ( C ). REMOVED TEE GEARBOX FOR LEFT OUTBOARD FLAP PER AMM PERFORMED INSTALLATION OF TEE GEARBOX FOR LEFT OUTBOARD TE FLAP FILE NUMBER ADDED FOR GEAR BOX INSTALLATION. PARTS DATA INPUTED 27-51-18-024-001. READY FOR INSTALLATION. UP TO STEP F(11)(C) OF OPERATIONAL TEST. STEP F(12) OF OPS TEST. REF AMM 27-51-18-424-019. CONTINUED FROM AMM 27-51-18-424-019, STEP F(12), OPS CHECK GOOD. NO FAULTS OR MESSAGES AT THIS TIME.

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