# SDR U2RA2026012600030

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2026
- Submitted: January 26, 2026
- Operation: Air carrier
- Aircraft: [N756CA](https://openairdocs.org/aircraft/N756CA), registered now
- Make and model: Boeing 747412
- Aircraft serial: 26547
- Aircraft time: 99,515 hours, 16,160 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 20131A
- Condition: Inoperative
- Location: Zone 200
- 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/U2RA2026012600030

## Discrepancy

DURING A-CHECK AT RKSI, WHILE ACCOMPLISHING T/C 33-050-01-01, FOUND 11 EACH EMERGENCY LIGHT INOPERATIVE. BATTERY ASSY P/N: 2013-1A WAS REPLACED AND DOCUMENTED ON SHARP TECHNICS K W.O. MNT004216 / NR-0013. OPERATIONAL CHECK SATISFACTORY.

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