# SDR TWAA9909703

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 11, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N987Z](https://openairdocs.org/aircraft/N987Z), registered now
- Make and model: Doug DC-9-31
- Registry model: [Doug DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (OpenAirDocs)
- Aircraft serial: 47137
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 6011779LB
- Condition: Inoperative
- Location: Lt Nacelle
- Stage of operation: IN
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TWAA9909703

## Discrepancy

THE LEFT ENGINE NACELLE EMERGENCY LIGHT REMAINED ON ALL THE TIME.  REPLACED THE POWER SUPPLY 6011779LB, AND THE BATTERY PACK 418030CF00101.  CHECK-C 4-26-99 MCI.

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