# SDR CALA2026031914679

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2026
- Submitted: March 19, 2026
- Operation: Air carrier
- Aircraft: [N78008](https://openairdocs.org/aircraft/N78008), registered now
- Make and model: Boeing 777224
- Aircraft serial: 29478
- Aircraft time: 124,322 hours, 12,858 cycles
- System (JASC): [5297 · Door System Wiring](https://openairdocs.org/jasc/5297)
- Part: Wire Harness
- Condition: Damaged
- Location: Zone 800
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026031914679

## Discrepancy

STS MSG DOOR AFT CARGO IND WITH MSG 52 11570. REQST MEL APPROVAL. OK TO DEFER AFT CARGO DOOR INDICATION INOP ACP'ED DDG AS MEL REQ'ED. PLACED ITEM ON MEL. DM REF. MX FAULT MSG 52-11570 FIM 52-37 TASK 807. CONFIRMED FAULT CODE 52-11570. PERFORMED FIM 52-37 TASK 807. FOUND OPEN CIRCUIT DURING WIRING CONTINUITY CHECK BETWEEN SENSOR. CONNECTOR DS52045 PIN 2 AND PSEU 2 M32025AE PIN D9. ISOLATED OPEN CIRCUIT BETWEEN CONNECTORS D7704P AND D7703P REF WDM 52-71-15 PAGE 1. WIRING REPAIR REQUIRED PER SWPM 20-30-12  SPLICE OF WIRE W5094-2007R-20.  DDG ACCOMPLISHED. DEACTIVATED AFFECTED SENSOR BY REMOVING & SECURING CONNECTOR DS52045 IAW AMM 52-37-23-900-801. WIRING SECURED IAW SWPM 20-10-13. ITEM REMAINS ON MEL. WIRE HARNES M & E 25-5234-3-0180, CABLE, FLEX CABLE ASSY LARGE CARGO DOOR, PNR 2U01310-02 WIRE HARNES M&E 25-5234-3-0180, CABLE, FLEX CABLE ASSY LARGE CARGO DOOR, PNR 2U01310-02 REMOVED AND REPLACED AFT CARGO DOOR HARNESS IN REF WITH AMM 52-37-23. MEL REVERSED. OPS CHECK GOOD.

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