# SDR 2007UALA05076

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 13, 2007
- Submitted: December 14, 2007
- Operation: Air carrier
- Aircraft: [N220UA](https://openairdocs.org/aircraft/N220UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30223
- Aircraft time: 26,261 hours, 3,459 cycles
- Engine: Pwa PW4090
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Idg
- Part number: 767146A
- Condition: Failed
- Location: Nr 1 Engine
- Stage of operation: TO
- How discovered: O
- Nature of condition: H, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA05076

## Discrepancy

LT GENERATOR FAILURE ON TAKEOFF ROLL. DISCONNECTED GENERATOR AND CONTINUED TO ORD AFTER PHONE PATCH WITH SAMC AND DISPATCH.  NR 1 ENGINE INTEGRATED DRIVE GENERATOR FREQUENCY IS LOW. REPLACED NR 1 IDG. AC OK FOR SERVICE.

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