# SDR ASAA1159384

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2011
- Submitted: April 8, 2011
- Operation: Air carrier
- Aircraft: [N551AS](https://openairdocs.org/aircraft/N551AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 34593
- Aircraft time: 20,743 hours, 6,505 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Part serial: UNKNOWN
- Condition: Inoperative
- Location: Cabin
- 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/ASAA1159384

## Discrepancy

EMERGENCY LIGHTS AT DOME LIGHT IN COCKPIT AND AISLE LIGHT AFT OF COCKPIT DOOR FAILS TO ILLUMINATE.  FOUND BAD POWER SUPPLY M1675.  REPLACED SAME IAW B737 800 AMM 33 51 06 960 806. OPS NML.  C/B'S OPENED AND TAGGED AT P18 3 A10 A11 B10.  THEN TAGS RMVD AND C/B'S SET AS NOTED ABOVE.

---
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.