# SDR AALA202601229636

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2026
- Submitted: January 22, 2026
- Operation: Air carrier
- Aircraft: [N917NN](https://openairdocs.org/aircraft/N917NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29572
- Aircraft time: 38,057 hours, 16,412 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Transmitter
- Part number: 18173812
- Part serial: 1937
- Condition: Faulty
- Location: Te Flaps
- Part time: 39,762 hours, 17,047 cycles
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202601229636

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: UPON SELECTING FLAPS 15 ON APPROACH DEVELOPED A TRAILING EDGE ASYMMETRY; ONE FLAP NEEDLE STOPPED AT 7 DEGREES THE OTHER AT ABOUT 12 DEGREES. AIRCRAFT DIVERTED TO AND LANDED SAFELY AT JFK. REMOVED AND REPLACED RIGHT HAND FLAP POSITION TRANSMITTER ASSEMBLY.  PER AMM 27-58-01. OPS CHECKS GOOD.

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