What was found
AT FL 390, CABIN DIFFERENTIAL PRESSURE IN YELLOW BAND AT 8.5 PSID. ACFT GROUNDED. PERFORMED DCPC BITE TEST OF THE NR 1 AND 2 CABIN CONTROLLERS IAW FIM 21-31 TASK 801 AND 21-33 TASK 803. SYSTEMS OK, NO FAULTS FOUND.
- Difficulty date
- October 24, 2017
- Submitted
- October 25, 2017
- Operation
- Air carrier
- Aircraft
- N537AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35204
- Aircraft time
- 22,742 hours, 6,618 cycles
- System (JASC)
- 2130 · Cabin Pressure Control System
- Part
- Warning Message
- Condition
- False Indication
- Location
- Cabin Pressure
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- N
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.