# SDR UALA2012082004646

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2012
- Submitted: September 28, 2012
- Operation: Air carrier
- Aircraft: [N778UA](https://openairdocs.org/aircraft/N778UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26940
- Aircraft time: 66,290 hours, 11,692 cycles
- Engine: Pwa PW4077
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Fitting
- Condition: Leaking
- Location: Lt Idg
- Stage of operation: NR
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012082004646

## Discrepancy

ELEC GEN OFF L LEFT GENERATOR CONTROL BREAKER (GCB) OPEN OR GENERATOR CONTROL SWITCH OFF AND ENGINE NOT SHUT DOWN.  ADVISORY MSG01- NOT ACTIVE CRUISE MODE DEPENDENT; INTEGRATED DRIVE GENERATOR (L) FREQUENCY IS LOW.  DB- GENERATOR CONTROL UNIT (L)  MSG02- LATCHED CRUISE MODE DEPENDENT; INTEGRATED DRIVE GENERATOR (L) WAS MANUALLY DISCONNECTED.  DB- GENERATOR CONTROL UNIT (L) MSG-2431631 INACTV ER MODE MSG-2431561 LATCHD ER MODE.  FOUND IDG OIL LOW.  LEAKING FROM OVERFLOW FITTING.  REPLACED SAME AND SERVICED IDG WITH 9 PINTS.  RECONNECTED.  REQUEST CREW CONFIRM IDG OPS ON ENGINE START.

---
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.