SDR 9518539926

Service difficulty report · Pressurization · Doug DC932

Difficulty date: November 19, 1995
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N926NW
Make and model: Doug DC932
Aircraft serial: 47425
System (JASC): 2130 · Cabin Pressure Control System
Part: Pressurization
Condition: Malfunctioned
Location: Cabin
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 TAKEOFF, THE AIRCRAFT STARTED TO PRESSURIZE NEGATIVELY. PROBLEM CONTINUED DURING CLIMB AND COULD NOT CONTROL CABIN MANUALLY. AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED THE DIFFERENTIAL PRESSURE SENSOR, OUTFLOW VALVE ACTUATOR, AND PRESSURE CONTROLLER. OPERATIONAL CHECK GOOD.

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