Service difficulty report · Control Valve · Boeing 777222

Difficulty date
March 25, 2013
Submitted
March 27, 2013
Operation
Air carrier
Aircraft
N798UA
Make and model
Boeing 777222
Aircraft serial
26928
Aircraft time
66,540 hours, 9,487 cycles
Engine
Pwa PW40903
Part
Control Valve
Part number
32908881
Part serial
681
Condition
Failed
Location
Cargo Heat
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

CARGO HEAT VALVE AFT FAILURE OF AFT CARGO HEAT SHUTOFF VALVE OR (SOV) OR TEMP CONTROL VALVE (TCV). INTERMITTENT STATUS MSG-2112031 INACTV ER MODE. REPLACED AFT CARGO TEMP. CONTROL VALVE PER AMM.