SDR AWXA0000468

Service difficulty report · Valve · Boeing 7373G7

Difficulty date: July 17, 2000
Submitted: July 19, 2000
Operation: Air carrier
Aircraft: N309AW
Make and model: Boeing 7373G7
Aircraft serial: 24711
Aircraft time: 34,364 hours, 24,059 cycles
System (JASC): 2130 · Cabin Pressure Control System
Part: Valve
Part number: 28410H
Part serial: 353
Condition: Failed
Location: Flow Control
Part time: 21,697 hours, 13,997 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 TURNBACK, CABIN WOULD ONLY PRESSURIZE TO 1.0 PSI, CABIN ALT REACH APPROX 9000. REMOVED AND REPLACED E & E COOLING FLOW CONTROL VALVE IAW BMM 21-58-31. LEAK OPS, PRESSURE, AND DECAY CHECKS GOOD. A/C HAS NO PRESSURIZATION PROBLEMS IN LAST 90 DAYS.

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