# SDR CALA2025102710616

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2025
- Submitted: October 27, 2025
- Operation: Air carrier
- Aircraft: [N838UA](https://openairdocs.org/aircraft/N838UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1477
- Aircraft time: 70,678 hours, 31,505 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025102710616

## Discrepancy

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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