Service difficulty report · Controller · Boeing 767322

Difficulty date
January 4, 2010
Submitted
January 4, 2010
Operation
Air carrier
Aircraft
N666UA
Make and model
Boeing 767322
Aircraft serial
29238
Aircraft time
40,814 hours, 11,251 cycles
Engine
Pwa PW4056
Part
Controller
Part number
7927558
Part serial
6
Condition
Malfunctioned
Location
Bleed System
Stage of operation
CL
How discovered
O
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

DUCT PRESS APPROX 35L-20R IN CLIMB. REMAINS SPLIT 20L-10R IN CRUISE 350 EPR 1.17. RAN BITE CHECK ON AIR SUPPLY BITE MODULE, FOUND FAULTS ON PRV AND PRV CONTROL. REPLACED PRV AND PRV CONTROL. OP CHECKS NORMAL