Service difficulty report · Sensor · Boeing 777222

Difficulty date
March 24, 2011
Submitted
April 4, 2011
Operation
Air carrier
Aircraft
N211UA
Make and model
Boeing 777222
Aircraft serial
30217
Aircraft time
38,674 hours, 8,520 cycles
Engine
Pwa PW4077
Part
Sensor
Condition
Faulty
Location
Bleed Prsov
Stage of operation
NR
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

BLEED PRSOV-R STATUS MSG DISPLAYED. AHM PROGRAM HAS DETECTED FAULT MESSAGE 36-10380 PRSOV-R FAILED CLSD IN CRUISE. CREW REPORTS NORMAL BLEED OPERATION. THIRD CONSECUTIVE LEG WITH THE SAME FAULT. ACP FAULT ISOLATION PROCEDURE PER FIM OR APPLY MEL 3611G. REPLACED IP SENSOR, MAT TEST CK'D OK, RAN ENG CYCLED BLEED ALL INDICATIONS NORMAL.