# SDR AALA201908309006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 29, 2019
- Submitted: August 30, 2019
- Operation: Air carrier
- Aircraft: [N939AN](https://openairdocs.org/aircraft/N939AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 30083
- Aircraft time: 56,080 hours, 23,273 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Transmitter
- Part number: 1817381X
- Part serial: 9023
- Condition: Unreliable
- Location: Te Flaps
- Stage of operation: AP
- How discovered: V
- Nature of condition: J, F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201908309006

## Discrepancy

AIRCRAFT WAS GROUNDED: FLIGHT DIVERTED ON ACCOUNT OF FLAP ASYMETRY ISSUE.  EMERGENCY DECLARED. ON APPROACH INTO CZM FLAP INDICATOR SPLIT NEEDLES AT 7+9 DEG AND FLAPS STOPPED TRACKING, COMPLETED QRH AND RESET FLAP LEVER TO 5 DEG THE NEEDLES CAME TOGETHER AT APPROX 7 DEG. MAINTENANCE REMOVED AND REPLACED LEFT FLAP POSITION TRANSMITTER IAW AMM 27-58-01. ALL CHECKS NORMAL.

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