Service difficulty report · Outflow Valve · Boeing 737823

Difficulty date
December 23, 2019
Submitted
January 2, 2020
Operation
Air carrier
Aircraft
N927NN
Make and model
Boeing 737823
Aircraft serial
31171
Aircraft time
21,136 hours, 8,706 cycles
Part
Outflow Valve
Part number
21230XXXX
Part serial
1391409
Condition
Faulty
Location
Cabin Pressure
Stage of operation
TO
How discovered
O
Nature of condition
J
Precautionary procedure
C

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT NOT GROUNDED: PILOT REJECTED T/O AT 90 KNOTS DUE TO CABIN PRESSURIZATION FAIL. MAINTENANCE FOUND NR 1 PRESSURIZATION SYSTEM FAULTED DURING BITE CHECK. FOUND OFV LRU FAIL ON NR 1 CONTROLLER. OUTFLOW VALVE NEEDS TO BE REPLACED IAW FIM 21-31-00-810-802. SUPPLEMENTAL INFORMATION: MAINTENANCE REMOVED AND REPLACED OUTFLOW VALVE IAW AMM 21-31-03. OPS TEST GOOD. (CLOSED)