# SDR J7SA2025061100448

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 29, 2025
- Submitted: June 11, 2025
- Operation: Air carrier
- Aircraft: [N601FX](https://openairdocs.org/aircraft/N601FX), registered now
- Make and model: Emb EMB-550
- Registry model: [EMB EMB-550](https://openairdocs.org/model/embraer-emb-550) (OpenAirDocs)
- Aircraft serial: 55020164
- Aircraft time: 3,304 hours, 1,958 cycles
- System (JASC): [2430 · DC Generating System](https://openairdocs.org/jasc/2430)
- Part: Generator
- Part number: 1958
- Part serial: 1465
- Condition: Faulted
- Location: Nr 1
- Part time: 535 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/J7SA2025061100448

## Discrepancy

DIVERTED DUE TO GEN 1 OFF BUS CAS APPROXIMATELY 2.5 HOURS INTO A FLIGHT FROM KSFO TO KPHL. CREW FOLLOWED QRH, DESCENDED TO FL310, AND STARTED THE APU. AT APPROXIMATELY 3 HOURS INTO THE FLIGHT, ADDITIONAL ALERTS WERE RECEIVED: ENGINE 1 EXCEEDANCE AND ENGINE 1 LOW OIL PRESSURE. THE CREW REDUCED ENGINE 1 POWER TO IDLE PER QRH INSTRUCTIONS. THE AIRCRAFT LANDED SAFELY AT KSTL. REPLACED GEN 1 IAW EMB-545/550 AMM 24-31-01.

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