# SDR DALA2020070202537

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2020
- Submitted: July 2, 2020
- Operation: Air carrier
- Aircraft: [N581NW](https://openairdocs.org/aircraft/N581NW), registered now
- Make and model: Boeing 757351
- Aircraft serial: 32982
- Aircraft time: 62,415 hours, 20,628 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- 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/DALA2020070202537

## Discrepancy

DURING SVC CK FOUNDED SECTION OF CABIN EMERG LIGHTS INOP.  SWAPPED BATT PACKS AND FOUND POWER SUPPLY M11613 FAILED.  R/R PSU MII613 PER AMM 33-51.  M11613 OPS NORMAL.  R/R BATTERY PACKS PER AMM 33-51.  OPS CK GOOD.

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