# SDR 2007UALA03851

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2007
- Submitted: September 28, 2007
- Operation: Air carrier
- Aircraft: N196UA
- Make and model: Boeing 747422
- Aircraft serial: 28715
- Aircraft time: 42,068 hours, 5,178 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Faulty
- Location: Emergency Light
- 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/2007UALA03851

## Discrepancy

DOOR 2L SIDEWALL EXIT SIGN INOP.    10-19-07     EXIT SIGN COMES ON AFTER REPLACEMENT OF BATTERY UNIT.  OP CHECKS NORMALLY.

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