# SDR AALA202202087463

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 5, 2022
- Submitted: February 8, 2022
- Operation: Air carrier
- Aircraft: [N917NN](https://openairdocs.org/aircraft/N917NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29572
- Aircraft time: 26,970 hours, 11,181 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Sensor
- Condition: Faulted
- Location: Rt Wing Te Flap
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202202087463

## Discrepancy

AIRCRAFT WAS GROUNDED: FLAPS WOULD NOT EXTEND AND YAW DAMPER FAILED IN DESCENT, FLAPS EXTENDED ELECTRICALLY PER QRH PROCEDURE TO 15 DEGREES. REPLACED #8 FLAP SKEW SENSOR WITH SERVICEABLE UNIT IAW AMM 27-59-01, OPS CHECK GOOD.

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