# SDR ASAA2025102561828

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 25, 2025
- Submitted: October 28, 2025
- Operation: Air carrier
- Aircraft: [N278AK](https://openairdocs.org/aircraft/N278AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44113
- Aircraft time: 28,638 hours, 9,129 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Light Sys
- Condition: Malfunctioned
- Location: Zone 200
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2025102561828

## Discrepancy

ROW 27ABC EMERGENCY LIGHT ON FOR HALF THE FLIGHT. GROUNDED - YES. CYCLING P5: PILOT EMERGENCY LIGHT SWITCH, PERFORMED GOOD OPERATIONAL TEST OF EMERGENCY LIGHT. 27ABC EMERGENCY LIGHT IS NORMAL. REF AMM 33-51-00/501.

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