What was found
PRESSURIZATION MODE CONTROL LAND ALT DIGITS FAILING. GROUNDED - YES. REMOVED AND REPLACED CABIN PRESSURE CONTROL MODULE, CABIN PRESSURE CONTROL SYSTEM OPS CK GOOD REF AMM TASK 21-31-00.
- Difficulty date
- October 16, 2018
- Submitted
- October 18, 2018
- Operation
- Air carrier
- Aircraft
- N531AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35199
- Aircraft time
- 32,807 hours, 9,721 cycles
- System (JASC)
- 2130 · Cabin Pressure Control System
- Part
- Control Module
- Part number
- 8243922002
- Part serial
- 01018855
- Condition
- Failed
- Location
- Cockpit
- Part time
- 51,488 hours, 22,584 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.