# SDR QXEA0101514

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 14, 2001
- Submitted: September 18, 2001
- Operation: Air carrier
- Aircraft: [N478US](https://openairdocs.org/aircraft/N478US), registered now
- Make and model: Fokker F.28 MK4000
- Registry model: [Fokker F.28 MK4000](https://openairdocs.org/model/fokker-f-28-mk4000) (OpenAirDocs)
- Aircraft serial: 11227
- Aircraft time: 34,691 hours, 41,469 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 6008903
- Part serial: 1688
- Condition: Weak
- Part time: 14,059 hours, 14,888 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA0101514

## Discrepancy

PDX - AFT LEFT CABIN EMERGENCY BATTERY PACK IS WEAK. REMOVED AND REPLACED AFT LEFT BATTERY PACK. OPERATIONAL CHECK IS GOOD. AIRCRAFT RETURNED TO SERVICE.

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