# SDR AALA972308

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N327AA
- Make and model: Boeing 767223
- Aircraft serial: 22327
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: O-Rings
- Condition: Broken
- Location: Lt Idg
- Stage of operation: CR
- Nature of condition: H
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA972308

## Discrepancy

ORD - FLT 682 - WHILE CRUISING AT 41:000 NORMAL ENGINE POWER SETTING TWO AND ONE-HALF HOURS AFTER TAKEOFF, LEFT GENERATOR DRIVE LIGHT STARTED RAPID FLICKERING AND INTERMITTENT 'LT GEN DRIVE' EICA MESSAGE.  TEN MINUTES LATER, LT GENERATOR DRIVE WAS DISCONNECTED.  FOUND LT GENERATOR DELTA P-FILTER BOWL O-RING BROKEN IN HALF.  REPLACED O-RING AND SERVICED IDG.  RESET BUS POWER ON LT L-BUS, RESET GENERATOR AND PERFORMED ENGINE RUN.  GENERATOR CHECKS GOOD.  NO LEAKS NOTED.  (X)

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