# SDR FDEA202602040129

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2026
- Submitted: February 5, 2026
- Operation: Air carrier
- Aircraft: [N770FD](https://openairdocs.org/aircraft/N770FD), registered now
- Make and model: Boeing 757222
- Aircraft serial: 24743
- Aircraft time: 84,772 hours, 34,420 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Bulb
- Part number: P78749001
- Condition: Failed
- Location: Zone 200
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA202602040129

## Discrepancy

DURING MX PRE-FLIGHT, FOUND L1 OVERHEAD EMERGENCY  EXIT SIGN DIM.    AMM: 33-51-01-2  REMOVED AND REPLACED 12 FAULTY BULBS IN THE L1  OVERHEAD EMERGENCY EXIT SIGN AS PER ABOVE REF.  OPS  CHECK GOOD.   A/C OK FOR SERVICE.

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