SDR 96FDEA01370

Service difficulty report · Relay · Boeing 72722

Difficulty date: August 15, 1996
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N187FE
Make and model: Boeing 72722
Aircraft serial: 19079
System (JASC): 2130 · Cabin Pressure Control System
Part: Relay
Condition: Dirty
Location: Cabin Press Syst
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

CLIMBING OUT AT APPROX FLT LVL 250, HIGH PITCHED HOWL STARTED, FOLLOWED BY LOSS OF CABIN PRESS. UNABLE TO CONTROL CABIN PRESSURE USING BOTH PACKS. REMOVED AND REPLACED SAFETY RELAY, CLEANED AND OPS CK'D, OUTFLOW VALVES PER ENGINE RUN TO STEADY 4 PSI.

More about the Boeing 727-22