# SDR CALA2025032103069

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2025
- Submitted: March 21, 2025
- Operation: Air carrier
- Aircraft: [N19136](https://openairdocs.org/aircraft/N19136), registered now
- Make and model: Boeing 757224
- Aircraft serial: 29285
- Aircraft time: 97,444 hours, 21,274 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Gcu
- Part number: 734284F
- Part serial: 6075
- Condition: Faulted
- Location: Zone 200
- Part time: 64,709 hours, 17,636 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025032103069

## Discrepancy

R GEN CONT LIGHT AND AC BUS OFF EICAS ILLUMINATED BUS PWR CONT UNIT FAULTS FOR RIGHT GEN PWR SYS CHECKED R-H ENG DPI INDICATOR AND FOUND NOT TRIPPED. RECOMMEND FOLLOWING FIM 24-20 TASK 802 STEP N (1) (I) FOR FAULT MESSAGES (DP TRIP) AND (MAIN BUS / OVERLAP ZONE) ON THE R/H SYSTEM. REMOVED AND REPLACED RIGHT GENERATOR CONTROL AND OPS CHECK GOOD IAW AMM 24-41-03. ALSO REFER REFER WORK PERFORMED ON LOG PAGE #4226102.

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