# SDR UIEA2020081351550

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 13, 2020
- Submitted: August 13, 2020
- Operation: Air carrier
- Aircraft: [N322SG](https://openairdocs.org/aircraft/N322SG), registered now
- Make and model: Boeing 747481
- Aircraft serial: 30322
- Aircraft time: 46,171 hours, 6,116 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 20131A
- Part serial: 60945
- Condition: Discharged
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2020081351550

## Discrepancy

UPPER DECK EMERGENCY LIGHT POWER SUPPLY M5056 BATTERY READS LOW VOLTAGE.   REMOVED AND REPLACED M5056 / BATTERY PER B747 AMM 33-51-04-902-001-001. OPS CHECKED GOOD PER B747 AMM / 33-51-04-712-006-001.

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