# SDR DALA2017061904808

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 16, 2017
- Submitted: June 19, 2017
- Operation: Air carrier
- Aircraft: [N710TW](https://openairdocs.org/aircraft/N710TW), registered now
- Make and model: Boeing 757-2Q8
- Registry model: [Boeing 757-2Q8](https://openairdocs.org/model/boeing-757-2q8) (OpenAirDocs)
- Aircraft serial: 28169
- Aircraft time: 73,102 hours, 20,284 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Gcu
- Condition: Malfunctioned
- Location: Left
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2017061904808

## Discrepancy

DIVERTED DUE TO ELECTRICAL SURGING WITH INSTRUMENTS AND LIGHTING FLICKERING. ALSO HAD AUTOTHROTTLE DISCONNECT AND SEVERAL PRESSURIZATION SPIKES. WHILE ON APPROACH WE GOT L GEN OFF MSG.   REPLACED LEFT GCU IAW AMM. PERFORMED OPERATIONAL CHECK OF LEFT IDG IAW AMM. OPERATIONAL CHECKED NORMAL. ACFT VOLTS AND FREQS CONSTANT.

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