# SDR USAA20101021SB173

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 21, 2010
- Submitted: October 21, 2010
- Operation: Air carrier
- Aircraft: [N422US](https://openairdocs.org/aircraft/N422US), registered now
- Make and model: Boeing 737401
- Aircraft serial: 23989
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 20131ASMI
- Condition: Discharged
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA20101021SB173

## Discrepancy

CLT - MAINTENANCE REPORTED THE AFT RIGHT EMERGENCY LIGHTS WILL NOT STAY ILLUMINATED FOR MORE THAN THREE SECONDS.  MAINTENANCE REMOVED AND REPLACED THE AFT RIGHT EMERGENCY LIGHT BATTERY PACK PER MM 33-51-51-2-962-015.

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