# SDR ASAA2026011363744

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 13, 2026
- Submitted: January 14, 2026
- Operation: Air carrier
- Aircraft: [N517AS](https://openairdocs.org/aircraft/N517AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35197
- Aircraft time: 60,178 hours, 18,001 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: No Test
- 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/ASAA2026011363744

## Discrepancy

WHILE PERFORMING T.C. #78233001, BATT PACKS FAILED EMERGENCY LIGHTS FUNC TEST. GROUNDED - YES. REMOVED AND REPLACED BATT PACKS X3 AT L1, R2, AND LH AFT MID CABIN POS, IAW AMM 33-51-06-960-805. NEW UNITS FROM STOCK CHECKS GOOD. ALSO, RELAMPED FWD AND AFT GALLEY ENTRY OVERHEAD EMERG LT IAW AMM 33-51-03-960-801. NEW LAMP X2, CHECKS GOOD.

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