# SDR UALA2011082604571

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 26, 2011
- Submitted: September 2, 2011
- Operation: Air carrier
- Aircraft: [N215UA](https://openairdocs.org/aircraft/N215UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30221
- Aircraft time: 40,169 hours, 8,671 cycles
- Engine: Pwa PW4077
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Generator
- Part number: 1701768
- Part serial: 209
- Condition: Faulty
- Location: Lt Engine
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011082604571

## Discrepancy

ELEC BACKUP GEN L LEFT BACKUP GENERATOR OFF DUE TO A PROTECTIVE TRIP.  STATUS  MSG01- LATCHED CLIMB MODE DEPENDENT; BACKUP GENERATOR (L) OIL PRESSURE IS LOW.  DB- BACKUP CONVERTER MSG-2446080 LATCHD CL MODE.  REPLACED LT ENGINE BACK-UP GENERATOR, CHECKS OKAY.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.