Service difficulty report · Outflow Valve · Boeing 737824
FAA SDR system
- Difficulty date
- June 24, 2026
- Submitted
- June 26, 2026
- Operation
- Air carrier
- Make and model
- Boeing 737824
- Aircraft serial
- 28954
- Aircraft time
- 80,607 hours, 30,300 cycles
- Part
- Outflow Valve
- Part number
- 40631997201AB
- Part serial
- 0161157
- Condition
- Faulted
- Location
- Zone 100
- Part time
- 67,112 hours, 24,824 cycles
- Stage of operation
- DE
- How discovered
- O
- Nature of condition
- G
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN DESCENT THROTTLES IDLE NOTICABLE PRESS BUMP. NEEDLE SHOWS 300 0 DN THEN RECOVERS PILOT CLARIFIED NEEDLE DN FLUCTUATED TO 3000 AND BEHAVED ERRATICALLY. CONTROLLER FAULT 19 OFV. REMOVED AND REPLACED AFT OUTFLOW VALVE ASSY. OPS CHECKS & GROUND CHKD SYS OKAY ON BOTH CONTROLLERS IAW AMM 2131-03-400-801. CREW REPORT PRESSURE BUMP NOTED ON DESCENT FROM 25K.