# SDR AALA202004249006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2020
- Submitted: April 24, 2020
- Operation: Air carrier
- Aircraft: N173AN
- Make and model: Boeing 757223
- Aircraft serial: 32399
- Aircraft time: 57,549 hours, 16,161 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: P4010049
- Part serial: 22815
- Condition: Discharged
- 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/AALA202004249006

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE - EMERGENCY LIGHTS, FLOOR PROXIMITY, FIRST CLASS, INOPERATIVE.  REMOVED AND REPLACED BATTERY M10952 (EMERGENCY POWER SUPPLY UNIT) PER AMM 33-51-07-902-001, OPERATIONAL CHECK GOOD. [SEE ASSOCIATED REPORT AALA202004249004 FOR OTHER PART REPLACEMENT]

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