# SDR CALA2016101200755

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 2016
- Submitted: October 12, 2016
- Operation: Air carrier
- Aircraft: [N121UA](https://openairdocs.org/aircraft/N121UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 29167
- Aircraft time: 71,198 hours, 8,049 cycles
- Engine: Pwa PW4056
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Stator
- Part number: 4300702
- Part serial: 0332
- Condition: Failed
- Location: Eec Alternator
- Stage of operation: CR
- How discovered: O
- Nature of condition: Y
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2016101200755

## Discrepancy

NR 3 ENGINE WENT TO EEC ALT MODE AND SHORTLY AFTER THAT THE ENGINE SHUT DOWN. ACPD ENGINE NR 2 PMA ALTERNATOR REPLACEMENT, ENGINE RUNUP TEST OK. NO MESSAGE REMAINED.

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