# SDR IPXA2021072271957

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2021
- Submitted: July 29, 2021
- Operation: Air carrier
- Aircraft: [N163UP](https://openairdocs.org/aircraft/N163UP), registered now
- Make and model: Airbus A300 F4-622R
- Registry model: [Airbus A300 F4-622R](https://openairdocs.org/model/airbus-a300-f4-622r) (OpenAirDocs)
- Aircraft serial: 0852
- Aircraft time: 20,509 hours, 12,240 cycles
- System (JASC): [5297 · Door System Wiring](https://openairdocs.org/jasc/5297)
- Part: Wire
- Condition: Broken
- Location: Fwd Cargo Door
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2021072271957

## Discrepancy

DURING CRUISE AT FL300, "RES PRESS" LIGHT ON MCD CONTROL PANEL WAS ILLUMINATED STEADY. ALL PRESSURE INDICATIONS NORMAL. LIGHT WAS NOT ILLUMINATED AFTER SHUTDOWN.  **DEFERRED CABIN/CARGO DOOR RESIDUAL PRESSURE WARNING SYSTEM IAW A300 M.E.L 52-73-02. PLACARD INSTALLED.T/S PER AWM 52-73-01, FOUND BROKEN WIRE 5273-131 BROKEN AT FWD CARGO DOOR FEED THROUGH.  REPAIRED PER ESPM 20-43-11.  TESTED PER AMM 52-73-00.  M750958 CLEARED.

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