SDR SWAA091992

Service difficulty report · Controller · Boeing 7373H4

Difficulty date: March 29, 2009
Submitted: March 31, 2009
Operation: Air carrier
Aircraft: N358SW
Make and model: Boeing 7373H4
Aircraft serial: 26595
Aircraft time: 55,718 hours, 48,638 cycles
System (JASC): 2131 · Cabin Pressure Controller
Part: Controller
Part number: 7110025
Part serial: 80C5475
Condition: Faulty
Location: Cabin Pressure
Stage of operation: DE
How discovered: O
Nature of condition: P
Precautionary procedure: G

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

What was found

DECLARED EMERGENCY. ON DESCENT FL 260, CABIN ALTITUDE WARNING, HORN SOUNDED. MASKS MANUALLY DEPLOYED. NO WARNING INDICATIONS. DESCENDED TO 10,000 IN MANUAL CONTROL. REMOVED AND REPLACED PRESSURE CONTROLLER, PRESSURE CONTROL PANEL AND PERFORMED PACK CONFIDENCE CHECK, ALL OPS CHECK GOOD PER MM.

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