# SDR I5EA2023111600007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2023
- Submitted: November 16, 2023
- Operation: Air carrier
- Aircraft: N737KT
- Make and model: Boeing 737-86N
- Registry model: [Boeing 737-86N](https://openairdocs.org/model/boeing-737-86n) (OpenAirDocs)
- Aircraft serial: 28619
- Aircraft time: 63,275 hours, 30,300 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/I5EA2023111600007

## Discrepancy

INITIAL - AFT CARGO LIGHT ON, ALTITUDE FL350, LOSS OF PRESSURE CONTROL, CABIN ALT WARNING HORN AND LIGHT ILLUMINATED, CABIN ALT READING 14000FT FOLLOWED THE QRH, INFLIGHT RETURN TO KLAS EMERGENCY DECLARED - VARIFIED AFT CARGO DOOR OPERATION, NO DEFECTS NOTED, DOOR OPENS AND CLOSES NORMAL. BITE CHECKED BOTH CABIN CONTROLLERS FOUND FAULTS FOR EXCESSIVE LEAK AND HIGH CABIN ALTITUDE

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