SDR 98UAL900092

Service difficulty report · Pressurization · Doug DC1010

Difficulty date: February 26, 1998
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N1845U
Make and model: Doug DC1010
Aircraft serial: 48261
Engine: Ge CF66D
System (JASC): 2130 · Cabin Pressure Control System
Part: Pressurization
Condition: Malfunctioned
Location: Cabin
Stage of operation: CL
Nature of condition: J
Precautionary procedure: B, A

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

What was found

AFTER TAKEOFF, PRESSURIZATION DID NOT OPERATE IN AUTO. SELECTED SEMI-AUTO, OK TO FL340 THEN SEMI-AUTO FAILED. SELECTED STBY, OK FOR ONE HOUR. ON CLIMB TO FL360, CABIN DEPRESSURIZED. SELECTED MANUAL BUT UNABLE TO CONTROL PRESSURIZATION. DESCENDED TO 15,000 MSL, DUMPED FUEL AND RETURNED TO HNL.

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