Service difficulty report · Outflow Valve · Airbus A319131

Difficulty date
February 2, 2026
Submitted
February 4, 2026
Operation
Air carrier
Aircraft
N847UA
Make and model
Airbus A319131
Aircraft serial
1627
Aircraft time
72,037 hours, 32,427 cycles
Part
Outflow Valve
Part number
90241570403
Part serial
17182339
Condition
Defective
Location
Zone 100
Part time
16,816 hours, 8,600 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

SAFETY VALVE STUCK OPEN CPC 1 TESTS OK. SUGGEST REPLACING CAB PR SAFTEY VALVE 6HL AND CPC 2. REF AMM 21-31-52/401 CONFIG 00. ENSURE SAFETY VALVE 7HL IS CLOSED UNLESS IT CAN BE POSITIVELY DETERMINED WHICH SAFETY VALVE OPENED, PER TSM 21-31-00-810-808-A, NEED TO REPLACE THE SAFETY VALVE (6HL) & THE SAFETY VALVE (7HL) IAW AMM 21-31-52-000-001 & AMM 21-31-52-400-001. PERFORMED REMOVAL OF SAFETY VALVES 6HL AND 7HL IAW AMM 21-31-52-000-001-A. UNLOCKING FOR SIGN OFF PERFORMED INSTALLATION OF SERVICEABLE SAFETY VALVES 6HL AND 7HL IAW AMM 21-31-52-400-001-A. PERFORMED OPS TEST OF THE POSITION INDICATION OF THE SAFETY VALVES REF AMM TASK 21-31-00-710-006-A. OPS CHK GOOD.

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