SDR 96ZZZM1141

Service difficulty report · Fitting · Boeing 727231

Difficulty date: June 12, 1996
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N808MA
Make and model: Boeing 727231
Aircraft serial: 21988
System (JASC): 2131 · Cabin Pressure Controller
Part: Fitting
Condition: Loose
Location: Controller
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

IAH - RETURN FROM FLIGHT, UPON CLIMB-OUT, FOUND CABIN PRESSURIZATION UNCONTROLLABLE IN AUTO AND STANDBY. SWITCHED TO MANUAL DC. CABIN RATE NOT CONTROLLABLE. SHUT OFF ONE PACK. CABIN STARTED TO RISE UNCONTROLLABLE. CLOSED CARGO HEAT OUTFLOW VALVE. CABIN STARTED TO DESCEND ON DESCENT. ON POST FLT INSPECTION, FOUND FITTING ON CABIN PRESSURE CONTROLLER TO BE LOOSE, TIGHTENED. OPS CHECK IAW MM 21-30-00 NORMAL. (M)