# SDR DALA2026012000426

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 16, 2026
- Submitted: January 20, 2026
- Operation: Air carrier
- Aircraft: [N583NW](https://openairdocs.org/aircraft/N583NW), registered now
- Make and model: Boeing 757351
- Aircraft serial: 32983
- Aircraft time: 78,451 hours, 25,856 cycles
- System (JASC): [2440 · External Power System](https://openairdocs.org/jasc/2440)
- Part: Receptacle
- Condition: Faulted
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026012000426

## Discrepancy

AUDIBLE POP AND SPARKS WHEN GROUND POWER CONNECTED.  BURNING ODOR SMELLED IN FLIGHT DECK.  GROUND POWER PROMPTLY REMOVED.   PERFORMED ELECTRICAL CHECK OF K114. PHASES A AND B BOTH SHORTED FROM INPUT TO OUTPUT.  R & R CONTACTOR K114 IAW AMM 24-41.  R & R EXTERNAL POWER RECEPTACLE IAW AMM 24-41.  R & R PHASE A & B INTERLOCK FUSES. RAN ON APU GENERATOR AND VERIFIED NO POWER TO RECEPTACLE. CONNECTED GROUND POWER & PERFORMED SEVERAL POWER SWAPS. ALL CHECKED GOOD.

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