SDR HALA9900245

Service difficulty report · Sensor · Doug DC951

Difficulty date: November 24, 1999
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N672MC
Make and model: Doug DC951
Aircraft serial: 47661
System (JASC): 2130 · Cabin Pressure Control System
Part: Sensor
Part number: 53895811
Condition: Malfunctioned
Location: Cabin Pressure
Stage of operation: NR
Nature of condition: J
Precautionary procedure: O

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

What was found

HNL - FLT 515 - CABIN PRESSURE CONTROL, ON TAKEOFF, CABIN DESCENDS 1800 FEET/MINUTE (PEGS OUT). THEN CLIMBS 500 FEET/MINUTE. THEN OSCILATES IN CLIMB 200-800 FEET/MINUTE. ON DESCENT, CABIN CLIMBS 500 FEET/MINUTE, THEN DOWN 1,000 FEET/MINUTE. REPLACED DIFFERENTIAL PRESSURE SENSOR, TESTED OK. (X)

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