Service difficulty report · Transmitter · Boeing 7379

Difficulty date
October 13, 2026
Submitted
October 15, 2026
Operation
Air carrier
Aircraft
N77578
Make and model
Boeing 7379
Aircraft serial
67613
Aircraft time
10,043 hours, 3,274 cycles
Part
Transmitter
Part number
90004531
Part serial
1810
Condition
Faulted
Location
Flap Sys
Part time
10,036 hours, 3,271 cycles
Stage of operation
NR
How discovered
O
Nature of condition
F, J
Precautionary procedure
O

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

What was found

T/E FLAPS INDICATION FOR LT & RT FLAPS DO NOT AGREE, TE FLAP ASSYM, FLAPS SPLIT AT 5 DETENT, MX MSG 27-52261, 27-52259, 32-62009 AND 32-62010. GEAR WARN SYS FAULTS MOST LIKELY DUE TO FLAP POSITION FAULTS. CHKD RESISTANCE AT D00275 IAW WDM 27-52-11. RESISTANCE IS 5.6 OHMS. OUT OF LIMITS IAW FIM. TRIED TO EXTENDE T/E FLAPS TO 40 UNITS IAW AMM 27-51-00-860-803. FLAPS DIDN'T MOVE WITH HYDS ON. TRIED TO MOVE FLAPS WITH ALTERNATE MODE IAW AMM 27-51-00-860-802, DIDN'T MOVE. R & R LT TRANSMITTER IAW AMM 27-58-01/401, OPS CHK FAILED. SUSPECT FLAPS NOT TO BE ON STOPS. REMOVED LT FLAP POSITION TRANSMITTER T427 FOR T/S IAW AMM 27-58-01-000-801. INSTALLED SAME TRANSMITTER, OPS CHK PASSED IAW AMM 27-32-00-740-803.

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