SDR TWAA9814101

Service difficulty report · Valve · Doug DC941

Difficulty date: September 1, 1998
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N935L
Make and model: Doug DC941
Aircraft serial: 47603
System (JASC): 2150 · Cabin Cooling System
Part: Valve
Part number: 20220142
Condition: Worn
Location: Rt Pack
Stage of operation: CR
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

CREW REPORTED SLOW PRESSURIZATION LOSS IN FLIGHT. REGAINED CABIN PRESSURIZATION IN DESCENT FROM BETWEEN 11000 AND 16000 FT. FLIGHT RETURNED TO STL. REPLACED RT PACK FLOW CONTROL VALVE, 2022014-2, AND PRESS RATIO SHUT OFF VALVE, 392714-1-1. CHECK-C 6-24-97 STL.

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