# SDR 2005UALA01063

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 2, 2005
- Submitted: October 18, 2005
- Operation: Air carrier
- Aircraft: N173UA
- Make and model: Boeing 747422
- Aircraft serial: 24380
- Aircraft time: 59,999 hours, 6,871 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 20131A
- Condition: Inoperative
- 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/2005UALA01063

## Discrepancy

EMERGENCY EXIT LT INOP, UPPER DK CROSS AISLE AT DOORS AFT FACING SIGN.  REPLACED BATTERY.

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