# SDR ABXA20260314104

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 14, 2026
- Submitted: March 16, 2026
- Operation: Air carrier
- Aircraft: [N219CY](https://openairdocs.org/aircraft/N219CY), registered now
- Make and model: Boeing 767383
- Aircraft serial: 24358
- Aircraft time: 98,407 hours, 26,144 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Shutoff Valve
- Condition: Failed
- Location: Zone 100
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ABXA20260314104

## Discrepancy

DURING INTIAL DESCENT, CABIN ALTITUDE WARNING WITH DEPRESSURIZATION  FROM FL 340. CREW DONNED O2 MASK AND DECLARED AN EMERGENCY.  PERFORMED EMERGENCY DESCENT , DIVERTED TO BAQ AND LANDED.  MTX GROUNDED A/C. A/ C IS IN WORK,  DURING T/S FOUND R PACK INOP, FOUND R FLOW CONT SOV CONN D1276 DISC. VALVE WAS LOCKED AND SAFETY TIED. RETURNED TO ORIGINAL CONFIGURATION PERFORMED BITE TEST AND CABIN PRESSURIZATION IAW AMM 21-31-00/01 FOUND NORMAL. AIRCRAFT RELEASE NO ETOPS.  A/C RETURNED TO SERVICE.

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