What was found
AIRCRAFT GROUNDED, UNABLE TO CONTROL CABIN ALTITUDE PRESSURIZATION. CABIN PRESSURE OUTFLOW VALVE ASSEMBLY REPLACED, IAW AMM 21-31-03-000-812-002/21-31-03-400-811-002. TEST PASSED AND STATUS CLEARED.
- Difficulty date
- September 14, 2020
- Submitted
- September 14, 2020
- Operation
- Air carrier
- Aircraft
- N777SA
- Make and model
- Boeing 777FZB
- Aircraft serial
- 37989
- Aircraft time
- 42,245 hours, 4,432 cycles
- Engine
- Ge GE90110B1
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Outflow Valve
- Condition
- Inoperative
- Location
- Cabin Pressure
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.