# SDR CALA2026040915229

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2026
- Submitted: April 9, 2026
- Operation: Air carrier
- Aircraft: [N75433](https://openairdocs.org/aircraft/N75433), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 33527
- Aircraft time: 53,280 hours, 19,007 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Proximity Switch
- Condition: Faulted
- Location: Zone 800
- Stage of operation: IN
- How discovered: V
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026040915229

## Discrepancy

CREW REPORTS AFT CARGO DOOR SHOWS OPEN INDICATION WHEN CLOSED. VERIFIED DOOR CLOSED BUT INDICATION STILL SHOWS OPEN. VERIFIED DOOR IS CLOSED.: DOOR CONFIRMED SECURED CLOSED REMOVED AND REPLACED AFT CARGO DOOR PROXIMITY WARNING SWITCH IAW AMM 52-71-31. OPS CHECKED GOOD.

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