Service difficulty report · Isolation Valve · Airbus A319131

Difficulty date
October 24, 2025
Submitted
October 27, 2025
Operation
Air carrier
Aircraft
N838UA
Make and model
Airbus A319131
Aircraft serial
1477
Aircraft time
70,678 hours, 31,505 cycles
Part
Isolation Valve
Part number
4063160823
Part serial
07116790
Condition
Faulted
Location
Cross Bleed
Part time
47,093 hours, 25,627 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

AIR X BLEED FAULT ON CLIMB OUT PFR SHOWS 36-12 AIR X BLEED FAULT W/ CORRELATED MSG'S 36-11-34 BMC 1 OR SOLENOID, 36-12-00 X FEED VALVE 6HV AND 36-12-00 X FEED VALVE 6HV OR CKT. ACP BMC 1 & 2 BITE CHKS GOOD ON THE GRND ALSO OPERATED X BLEED SWITCH AND ALL ECAM INDICATIONS CHK GOOD. PILOT REPORTED ENG #1 BLEED VALVE CLOSED W/ FAULT ON ECAM BUT NO FAULT LIGHT ON PUSHBUTTON SWITCH. ACP IND LIGHT TEST ENG 1 BLEED SWITCH LIGHT TEST NORMAL. NEED TO RUN ENG #1 TO VERIFY NORMAL OPS OF ENG #1 BLEED VALVE. REF FIMTSK 36-12-00-810-802-A. REMOVED CROSSBLEED VALVE REF AMM 36-12-52-000-001-A INSTALLED VALVE ISOLATION CROSS BLEED VALVE IN REF 36-12-52-400-001 PERFORMED OPS TEST BLEED AIR OPS CHECK OK AT THIS TIME.

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