SDR SWAA990829

Service difficulty report · Controller · Boeing 7373H4

Difficulty date: May 7, 1999
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N640SW
Make and model: Boeing 7373H4
Aircraft serial: 27713
System (JASC): 2131 · Cabin Pressure Controller
Part: Controller
Part number: 6973627
Condition: Malfunctioned
Location: Cockpit
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

AIR DIVERSION, LEVEL AT 35000 FEET, ENGINE AND WING ANTI-ICE ON, THE ALT HORN SOUNDED. CABIN ALT PASSING 10,000 FEET CLIMBING 1000 FPM. OUTFLOW VALVE FULLY CLOSED WITH NO WARNING LIGHTS ILLUMINATED. BEGAN EMERGENCY DESCENT, CYCLED WING AND ENG ANTI-ICE.

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