# SDR CALA2026052916662

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 25, 2026
- Submitted: May 29, 2026
- Operation: Air carrier
- Aircraft: [N37290](https://openairdocs.org/aircraft/N37290), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31601
- Aircraft time: 67,167 hours, 25,091 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Sensor
- Part number: 189929
- Condition: Intermittent
- Location: Flap Sys
- Stage of operation: CR
- 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/CALA2026052916662

## Discrepancy

DURING CRUISE, FL380.  LE FLAP TRANSIT LIGHT ILLUMINATED NR 4 LE FLAP OVRHEAD LIGHT ALSO ILLUM.   PERFORMED FIM 27-88 TASK 805 PERFORMED VISUAL CHECK OF F4 RETRACT SENSOR NO FAULTS FOUND PER FIM.  FOUND TO BE INTERMITENT FAULT.   REMOVED AND REPLACED FSEU IAW AMM 27-51-01, OPS CHECK GOOD.

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