SDR SWAA093943

Service difficulty report · Controller · Boeing 7373H4

Difficulty date: June 17, 2009
Submitted: June 18, 2009
Operation: Air carrier
Aircraft: N383SW
Make and model: Boeing 7373H4
Aircraft serial: 26589
Aircraft time: 50,917 hours, 42,802 cycles
System (JASC): 2131 · Cabin Pressure Controller
Part: Controller
Part number: 7638106
Part serial: 91080844
Condition: Faulty
Location: Cabin Pressure
Stage of operation: DE
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

DECLARED EMERGENCY, CABIN ALT SET TO 360 AND ALT WAS 340, CABIN PRESSURE WARNING LIGHT INDICATED, FOLLOWED BY OUTFLOW VALVE GOING FULL OPEN AND CABIN ALT RISING TO 10,000. COMPLIED WITH QRH AND DESCENT TO 10,000FT. REMOVED AND REPLACED CABIN PRESSURE CONTROLLER PER MM. PACK CONFIDENCE CHECK NORMAL PER MT.

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