SDR UALA2010120304444

Service difficulty report · Controller · Airbus A320232

Difficulty date: December 2, 2010
Submitted: December 3, 2010
Operation: Air carrier
Aircraft: N427UA
Make and model: Airbus A320232
Aircraft serial: 512
Aircraft time: 54,339 hours, 20,210 cycles
Engine: Iae V2527A5
System (JASC): 2150 · Cabin Cooling System
Part: Controller
Part number: 759A000010
Condition: Malfunctioned
Location: Nr 2
Stage of operation: IN
How discovered: 9
Nature of condition: O
Precautionary procedure: K

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

What was found

PACK FLOW, NR 2 PACK STUCK IN LOW FLOW. CONCERRED WITH OPBLM, SEVERAL PAST LEG HITS ON P1 CONTROLLER (7HH) 565-9009 WHICH *MAY* BE CAUSING PACK 2 FLOW PROBLEMS. SWAPPED OUT CONTROLLERS, PROBLEM CONTINUED ON NR2 PACK, REINSTALLED CONTROLLERS IN ORIGINAL POSITION. SUGGEST P2 PRESSURE INL SENSOR (36HH) IAW AMM. NEXT STEP WILL BE FLOW CONTROL VALVE. ACCOMPLISHED MT21-010. WITHIN LIMITS.

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