SDR UALA2013010400057

Service difficulty report · Bypass Valve · Airbus A320232

Difficulty date: January 3, 2013
Submitted: January 29, 2013
Operation: Air carrier
Aircraft: N473UA
Make and model: Airbus A320232
Aircraft serial: 1469
Aircraft time: 39,034 hours, 15,972 cycles
Engine: Iae V2527A5
System (JASC): 2160 · Cabin Temperature Control System
Part: Bypass Valve
Part number: 1312A000001
Part serial: 786
Condition: Faulty
Location: Cabin Temp
Stage of operation: NR
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

UNABLE TO GET CABIN FWD AND AFT ABOVE 68 DEGREES WITH BOTH FWD AND AFT CONT SET AT FULL WARM. SAMC TEXT: DUE TO LAST LEG REPORT OF P2 BYPASS VALVE FAULT, CHANGE 30HH BYPASS VALVE REF AMM 21-61-53, PCN 644-9042. REPLACED TURBINE BYPASS VALVE ON NUMBER 2 PACK PER MM. LEAK TEST OK AND ACP CAB TEST, TEST PASSED.

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