# SDR IPXA2018070531422

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 5, 2018
- Submitted: July 11, 2018
- Operation: Air carrier
- Aircraft: N279UP
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48573
- Aircraft time: 72,329 hours, 13,596 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Inoperative
- Location: Cockpit
- 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/IPXA2018070531422

## Discrepancy

ON PREFLIGHT; ''EMER LT BAT 1 LO''.  R&R EMERGENCY POWER SUPPLY IAW MM 33-51-01. OPS CK GOOD.

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