# SDR AALA20160421004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2016
- Submitted: April 21, 2016
- Operation: Air carrier
- Aircraft: [N486AA](https://openairdocs.org/aircraft/N486AA), registered now
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 49679
- Aircraft time: 78,244 hours, 41,478 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: P4010049
- Part serial: 21243
- Condition: Weak
- Location: Cabin
- Part time: 17,756 hours, 7,420 cycles
- 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/AALA20160421004

## Discrepancy

AIRCRAFT WAS NOT GNDED.  FWD ESCAPE PATH MARKER LIGHTS FOUND WEAK DURING DUAL FEED CHECK.  R & R BATTERY PACK.  SYS CHECKED NORMAL.

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