SDR SWAA032671

Service difficulty report · Outflow Valve · Boeing 7373H4

Difficulty date
December 7, 2003
Submitted
December 11, 2003
Operation
Air carrier
Aircraft
N615SW
Make and model
Boeing 7373H4
Aircraft serial
27698
Aircraft time
28,270 hours, 24,425 cycles
Part
Outflow Valve
Part number
40631997201AA
Part serial
9510591
Condition
Faulty
Location
Cabin Pressure
Stage of operation
CL
How discovered
O
Nature of condition
S
Precautionary procedure
O

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

What was found

LOSS OF CABIN PRESSURE LEVEL AT FL290, CABIN PRESS REACHED FL220. UNCONTROLABLE IN MANUAL MODE. GOOD BLEED AIR PRESSURE DURING DEPRESSURIZATION. REMOVED AND REPLACED MAIN OUTFLOW VALVE AND CABIN PRESSURE CONTROLLER PER MM.

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