SDR 9711352204

Service difficulty report · Out Flow Valve · Boeing 727251

Difficulty date: June 4, 1997
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N204US
Make and model: Boeing 727251
Aircraft serial: 22544
System (JASC): 2133 · Pressure Regulator/Outflow Valve
Part: Out Flow Valve
Condition: Failed
Location: Lt/Rt
Stage of operation: CL
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

DURING CLIMB, COULD NOT HOLD AND MAINTAIN CABIN PRESSURIZATION. RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED THE LEFT AND RIGHT OUTFLOW VALVES, RIGHT AIR CYCLE MACHINE, LEFT AND RIGHT 35 DEGREE SWITCHES AND SEALS AT FLOW MULTIPLIER DUCT, AND CHECKED AND TIGHTENED LOOSE CLAMPS. LEAK AND OPERATIONAL CHECK OK. AIRCRAFT OK FOR SERVICE.