# SDR CALA2025081207633

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2025
- Submitted: August 12, 2025
- Operation: Air carrier
- Aircraft: [N27903](https://openairdocs.org/aircraft/N27903), registered now
- Make and model: Boeing 787-8
- Registry model: [Boeing 787-8](https://openairdocs.org/model/boeing-787-8) (OpenAirDocs)
- Aircraft serial: 34823
- Aircraft time: 49,965 hours, 6,232 cycles
- System (JASC): [2450 · AC Power Distribution System](https://openairdocs.org/jasc/2450)
- Part: Control Unit
- Part number: 866CE04Y11
- Part serial: ZECR20217
- Condition: Faulted
- Location: Zone 100
- Part time: 31,050 hours, 3,861 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: S
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025081207633

## Discrepancy

ELEC P200 PANEL THE PRIMARY POWER DISTRIBUTION SYSTEM (PPDS) P200 PANEL IS FAULT ED SUCH THAT IT CANNOT SUPPORT AIRPLANE DISPATCH, SUCH AS DUAL C HANNEL IN-OPERATIVE. DB 24 PDHM OPS (GPM L8) DB 24 PDHM OPS (GPM R6) TS MAINTENANCE MESSAGE 24-17484 IN REF WITH FIM, 24-30-F5-61A-421A FOUND P200M3 ELCU PROTECTION CIRCUIT CARD BAD. REMOVED AND REPLACED P200M3 ELCU PROTECTION CIRCUIT CARD IN REF WITH B787-A-24-09-04 UP TO STEP 1. D. (5).   REMOVED AND REPLACED P200M3 ELCU PROTECTION CIRCUIT CARD IN REF WITH B787-A-24-09-04 FROM STEP 1. D. (5) TO COMPLETION OF INSTALLATION. OPS CHECK GOOD.

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