# SDR UIEA2017082501544

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2017
- Submitted: September 12, 2017
- Operation: Air carrier
- Aircraft: [N473MC](https://openairdocs.org/aircraft/N473MC), registered now
- Make and model: Boeing 747-45E
- Registry model: [Boeing 747-45E](https://openairdocs.org/model/boeing-747-45e) (OpenAirDocs)
- Aircraft serial: 27174
- Aircraft time: 97,847 hours, 17,365 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: BPS73
- Part serial: 35065
- 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/UIEA2017082501544

## Discrepancy

LIGHT BATTERY PACKS FAIL CAPACITY TEST. REMOVED EMERGENCY LIGHT BATTERY PACKS (4EA) IN UPPER DECK AS PER AMM 33-51-04. INSTALLED NEW EMERGENCY LIGHT BATTERY PACKS (2EA) IN UPPER DECK AS PER AMM 33-51-04. OP CK GOOD PER AMM 33-51-04.

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