Service difficulty report · Pcb · 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
Pcb
Part number
D01704
Part serial
285T111515
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 WARNING A RIGHT HPSOV CLOSE COMMAND WAS NOT DETECTED. THE BLEED AIR CONTROL CARD DID NOT GENERATE A 28 VCD. 2.5 SEC HPSOV CLOSE SIGNAL. THIS CONDITION WILL NORMALLY OCCUR WHEN THE BLEED SWITCH IS PLACED IN THE OFF (BAR HIDDEN) POSITION. REMOVED/REPLACED RT BLEED AIR CTL CARD M860, PER AMM 36-11-12/401. OPERATIONS CHECK RT BLEED AIR SUPPLY SYSTEM OK, IAW AMM 36-11-00.