SDR CA970318026

Service difficulty report · Trim Air Valve · Airbus A340313

Difficulty date: February 13, 1997
Submitted: March 26, 2000
Operation: Air carrier
Make and model: Airbus A340313
System (JASC): 2130 · Cabin Pressure Control System
Part: Trim Air Valve
Part number: 963A000002
Condition: Failed
Location: Nr 1 Pack
Stage of operation: CR
Nature of condition: O
Precautionary procedure: B

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

What was found

(CAN) AIRCRAFT OPERATING WITH #1 AIR CONDITIONING PACK ON DEVIATION DUE TO OVERHEAT. UNABLE TO CONTROL CABIN PRESSURIZATION, TRIED TO RESTART #1 PACK, NO SUCCESS. INITIATED EMERGENCY DESCENT TO 10,000 FEET. MAINTENANCE TROUBLE SHOOTING REVEALED TRIM AIR PRESSURE REGULATOR FAILED. REGULATOR REPLACED AND SYSTEM CHECKED SERVICEABLE.

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