SDR AALA202508110399

Service difficulty report · Indicator · Boeing 737823

Difficulty date: August 9, 2025
Submitted: August 11, 2025
Operation: Air carrier
Aircraft: N976NN
Make and model: Boeing 737823
Aircraft serial: 33243
Aircraft time: 29,729 hours, 12,593 cycles
System (JASC): 2751 · Trailing Flap Position Indicating System
Part: Indicator
Condition: False Indication
Location: Zone 500
Stage of operation: AP
How discovered: V
Nature of condition: F, S, J
Precautionary procedure: A

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

What was found

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: DURING THE APPROACH THE FLAPS STOPPED MOVING WITH THE LEFT FLAP AT ABOUT 20 AND RIGHT FLAP AT 15. NO WARNINGS AND CAUTIONS WERE PRESENT IN THE COCKPIT. AIRCRAFT COMMENCED A GO-AROUND AND LANDED SAFELY AT BOS. REMOVED AND REPLACED FLAP TRANSMITTER (AALA202508118950), PER AMM 27-58-01-400-801. ALSO, REPLACED FLAP POSITON INDICATOR (AALA202508110399), PER AMM 27-58-02-400-801 AND AMM 27-59-01-400-801. OPERATIONAL CHECK GOOD.