# SDR ASAA2025120362837

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 3, 2025
- Submitted: December 5, 2025
- Operation: Air carrier
- Aircraft: [N973AK](https://openairdocs.org/aircraft/N973AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43346
- Aircraft time: 13,753 hours, 4,010 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Lens
- Part number: UNKNOWN
- Condition: Misinstalled
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2025120362837

## Discrepancy

FLIGHT ATTENENT REPORTS THAT THE ORANGE AND BLUE FUNCTIONS OF THE AFT FA VISUAL ALERTING SYSTEM ( ON CEILING) ARE REVERSED. GROUNDED - YES. AFT GALLEY EXIT SIGN W/ CALL LIGHTS FOUND W/ LOWER LENS INSTALLED BACKWARDS, REVERSING ORANGE AND BLUE FUNCTIONS. INSTALLED LENS PROPERLLY AND ALL OPS CHECKS GOOD. REF AMM 33-51-01-960-801.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.