# SDR AALA202502036487

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 1, 2025
- Submitted: February 3, 2025
- Operation: Air carrier
- Aircraft: [N970NN](https://openairdocs.org/aircraft/N970NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31218
- Aircraft time: 28,617 hours, 12,134 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Transmitter
- Part number: 18173812
- Part serial: 8358
- Condition: Faulted
- Location: Zone 600 Flaps
- Stage of operation: AP
- How discovered: O
- Nature of condition: N
- Precautionary procedure: L, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202502036487

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: FLAPS NOT IN COMMANDED POSITION UNABLE TO EXTEND OR RETRACT AT FLAPS 25; AIRCRAFT LANDED SAFELY AT ORD. BITE OF FSEU SHOWS MAINT MSG 27-52260 TRAILING EDGE FLAP SENSOR RIGHT FAULT. RIGHT SENSOR READS 219.7 LEFT READS 210.7 AND NEEDLES IN COCKPIT ARE SPLIT. REMOVED AND REPLACED RIGHT POSITION SENSOR PER MM 27-58-01. GROUND CHECKS NORMAL FLAPS RUN PER MM.

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