What was found
CABIN ALTITUDE UNCONTROLLABLE AT FL 360, OUTFLOW VALVE UNCONTROLLABLE. CABIN ALT AUTO 2 STATUS MESSAGE, CABIN ALTITUDE EICAS MESSAGE. REMOVED AND REPLACED SELECTOR CBN PRESSURE, IAW AMM 21-31-01. OPS CHECK NORMAL.
- Difficulty date
- September 18, 2020
- Submitted
- September 21, 2020
- Operation
- Air carrier
- Aircraft
- N662GT
- Make and model
- Boeing 76731A
- Aircraft serial
- 27619
- Aircraft time
- 77,883 hours, 15,469 cycles
- System (JASC)
- 2130 · Cabin Pressure Control System
- Part
- Selector
- Part number
- 1305027
- Part serial
- 25538
- Condition
- Failed
- Location
- Cabin Pressure
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.