Service difficulty report · Outflow Valve · Boeing 767338

Difficulty date
February 17, 2021
Submitted
February 19, 2021
Operation
Air carrier
Aircraft
N372CM
Make and model
Boeing 767338
Aircraft serial
25575
Aircraft time
90,387 hours, 30,495 cycles
Part
Outflow Valve
Condition
Failed
Location
Cabin Pressure
Stage of operation
CR
How discovered
O
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

LOSS OF ALL PRESSURIZATION CONTROL AT 30,000 FT. FAILURE OF AUTO 1, AUTO 2 AND MANUAL. NO CONTROL. ATB TO MIA. AIRCRAFT GROUNDED. REMOVED & REPLACED OUTFLOW VALVE IAW AMM 21-31-03, CABIN PRESSURE OPS CHECK ON GROUND OK IAW AMM 21-31-03. AIRCRAFT REMAINS ETOPS 180.