# SDR CALA2018101502120

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 15, 2018
- Submitted: October 15, 2018
- Operation: Air carrier
- Aircraft: [N77871](https://openairdocs.org/aircraft/N77871), registered now
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 33526
- Aircraft time: 43,261 hours, 12,132 cycles
- System (JASC): [2424 · AC Regulator](https://openairdocs.org/jasc/2424)
- Part: Gcu
- Part number: 734284F
- Condition: Inoperative
- Location: Left
- Stage of operation: CL
- 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/CALA2018101502120

## Discrepancy

EICAS WENT BLANK AFTER T/O THEN R HYD ELEC PUMP AUTOTHROTTLE DISC FOUND C/B OPEN/POPPED, P31 L GEN PWR PNL. CB 115 VAC BUS L, SECT 1. C/B RESET, BUT NO TIME TO T/S FAULT CHECKED THE AREA INSIDE P31 PANEL, ALL NORMAL, REPLACED CB AT P31 PANEL C313, REF WD 24-51-11 PG6, ALSO REPLACED LT GCU PER MM TASK 24-22-02-004-002, 24-22-02-404-004, ACCP ENG RUN, OPS CKD NORMAL, NO FAULT ON BPCU. ROTABLE PARTS CHANGE WAS INDICATED - TT 1247172 SN OFF 4159 UNIT, GENERATOR OFF 99-2411-9-0001 4159 ON 99-2411-9-0001 4289.

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