# SDR CALA2026081418625

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2026
- Submitted: August 14, 2026
- Operation: Air carrier
- Aircraft: [N649UA](https://openairdocs.org/aircraft/N649UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25286
- Aircraft time: 132,819 hours, 20,289 cycles
- Engine: Pwa PW4060
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Actuator
- Part number: 202248011
- Part serial: 1814
- Condition: Faulty
- Location: Outflow Valve
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026081418625

## Discrepancy

CABIN ALTITUDE EICAS  WARNING.   CABIN ALTITUDE 10000 FT PILOTS REPORT EICAS WARNING AT FL330. AT THE TIME CABIN PRESSURE SHOWED 10000 WITH DIFFERENTIAL PRESSURE AT 7. ON DESCENT TO FL320 CABIN PRESSURE SHOWED 8500 WITH DIFFERENTIAL REMAINING AT 7. PERFORMED BITE CHECK OF THE CABIN PRESSURE CONTROLLERS, FOUND  -AC POWER OFF- LIGHT ON DURING BITE. PERFORMED OPS CHK OF OUTFLOW VALVE, FOUND ERRATIC INDICATION OF OUTFLOW VALVE POSS INDICATOR AT OVERHEAD PANEL, INDICATOR QUIVERING WHILE VALVE OPENING & CLOSING. IAW FIM 21-31 TREE 803. AMM 21-31-04. R & R OUTFLOW VALVE ACTUATOR ASSY, IAW AMM 21-31-04. POST INSTALLATION TEST OK.

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