Service difficulty report · Priority Valve · Boeing 747428F

Difficulty date
October 3, 2014
Submitted
October 6, 2014
Operation
Air carrier
Aircraft
N580UP
Make and model
Boeing 747428F
Aircraft serial
1
Part
Priority Valve
Part number
80217012
Part serial
960919
Condition
Inoperative
Location
Nr 3 Bleed
Stage of operation
NR
How discovered
9
Nature of condition
J
Precautionary procedure
O

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

What was found

BLEED 3 EICAS CAUTION MESSAGE, TURNED NR 3 BLEED OFF IAW CHECKLIST REVIEWED CMC AND FOUND NR 3 BLEED DURING THE CLIMB STATUS, ENGINE DUCT PRESSURE UP TO 110 PSI, BLEED AIR PRESSURE WARNING COMING UP, CMC MSG 36228 BLEED-3 PRV/CONTROLLER FAIL OPEN, REFER TO FIM 36-11-00-812-941, INSP THE PNEUMATIC SENSE LINE NO LEAK FOUND, WIRING CHECKED SATISFACTORY. R & R PRV IAW AMM 36-11-19, PRVC IAW 36-11-20. LEAK TEST NO LEAK, ENG RUN ALL PARAMETER.