Service difficulty report · Outflow Valve · Boeing 7378Q8

Difficulty date
February 23, 2015
Submitted
February 23, 2015
Operation
Air carrier
Aircraft
N816SY
Make and model
Boeing 7378Q8
Aircraft serial
30637
Aircraft time
48,399 hours, 16,645 cycles
Part
Outflow Valve
Condition
Iced
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
G

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

What was found

CABIN WARNING HORN SOUNDED AT FL370. CABIN PRESSURE OBSERVED AT 10,000. RATE OF CABIN CLIMB WAS 500 FPM AND NOT CONTROLLABLE, O2 MASKS DEPLOYED. REMOVED ICE CONTAMINATION FROM OUTFLOW VALVE AND SURROUNDING AREA.

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