Service difficulty report · Flap System · Boeing 737924ER

Difficulty date
July 9, 2026
Submitted
July 14, 2026
Operation
Air carrier
Aircraft
N28478
Make and model
Boeing 737924ER
Aircraft serial
31649
Aircraft time
39,459 hours, 14,662 cycles
Part
Flap System
Condition
Faulted
Stage of operation
AP
How discovered
O
Nature of condition
F
Precautionary procedure
A

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

What was found

ON APPCH GEAR DOWN F15 SLCTD. IND WAS 5 ON THE GAUGE. AFTER GO ARNDWORKED NRML ON RETURN PERFORMED FSEU INBD FAULT AND EXISTING FAULTS TEST, TASK 27-51-00-740-801. NO FAULTS INBD AND ON GND. NO PREVIOUS HISTORY. RAN FLAPS COUPLE OF TIMES AND INSPECTED THEM, ALL CHK OK PER AMM 27-51-00-860-047 . ACCOMPLISHED OVERSPEED PHASE 1 INSPECTION PER AMM 05-51-08-210-801 QAR INFO DETERMINED THE FLAP HANDLE WAS MOVED TO "10" AT 228.8 K IAS.. FLAPS STOPPED AT 5 WITH MAX SPEED 229 KIAS. VERTICAL ACCEL ERATION STAYED BETWEEN +0.828 G AND +1.222 G. ACCORDING TO AMM 0 5-51-08/201, "DO THE PHASE I INSPECTION ON THE AFFECTED DEVICES WITHIN 100 FLIGHT . ALSO REF FIM 27-51 TASK 836, THIS WAS A RESU LT OF "FLAP HANDLE REVERSAL" LOCKOUT. NO FURTHER ACTION REQUIRED