# SDR AALA202110297828

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 2021
- Submitted: October 29, 2021
- Operation: Air carrier
- Aircraft: [N839AA](https://openairdocs.org/aircraft/N839AA), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 40646
- Aircraft time: 11,676 hours, 1,377 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Generator
- Part number: 7001330H03
- Part serial: 3326
- Condition: Faulted
- Location: Zone 400 - Nac/P
- Part time: 12,706 hours, 1,405 cycles
- Component: Engine, Ge, GENX1B
- Component part number: GENX1B70P2G01
- Stage of operation: CR
- How discovered: V
- Nature of condition: J, G
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202110297828

## Discrepancy

AIRCRAFT WAS GROUNDED: DUAL GENERATOR FAILURE ON LH ENGINE, FLIGHT DECLARED EMERGENCY AND RETURNED TO FIELD. REPLACED THE L2 AND L1 (AALA202110296982) VARIABLE FREQUENCY STARTER GENERATORS WITH SERVICEABLE UNITS IAW AMM 24-21-09-00B, LEAK AND OPS CHECK GOOD.

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