Service difficulty report · Switch · Boeing 777222

Difficulty date
September 24, 2013
Submitted
September 27, 2013
Operation
Air carrier
Aircraft
N218UA
Make and model
Boeing 777222
Aircraft serial
30222
Aircraft time
53,224 hours, 6,454 cycles
Engine
Pwa PW40903
Part
Switch
Condition
Faulty
Location
Cargo Heat
Stage of operation
IN
How discovered
O
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

AFT CARGO HEAT VALVE. DUE TO SEVERAL REPEATS FOR AFT CARGO HEAT TEMPERATURE CONTROL. THIS HAS NOW BECOME A LEVEL 2 CHRONIC. REPLACED AFT CARGO OVER HEAT SWITCH IAW AMM21-44-10 MAT TESTED PASSED.