Service difficulty report · Controller · Boeing 767324

Difficulty date
December 15, 2020
Submitted
December 18, 2020
Operation
Air carrier
Aircraft
N645GT
Make and model
Boeing 767324
Aircraft serial
27393
Aircraft time
100,338 hours, 19,327 cycles
Part
Controller
Part number
2018031389
Part serial
77328915
Condition
Faulted
Location
Shutoff Valve
Stage of operation
IN
How discovered
9
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

FAULT FAILURE RIGHT HPSOV DOES NOT OPEN WHEN COMMAND. THE HPSOV REMAINS CLOSED WHEN THE HPC CONTROL LINE PRESSURE EXCEEDS .14 PSIG. ENGINE SPEED MUST ALSO EXCEED 50% N2 BEFORE A FAULT WILL BE DETECTED. REMOVED/REPLACED HPSOV CONTROLLER, IAW AMM 36-11-08, NO LEAKS NOTED. PENDING OPERATIONS CHECK. PERFORMED OPERATIONS/LEAK CHECK, IAW 767-AMM 36-11-08. OPERATIONS CHECK NORMAL, NO LEAKS NOTED.