Service difficulty report · Warning System · Boeing 777222

Difficulty date
September 23, 2013
Submitted
September 27, 2013
Operation
Air carrier
Aircraft
N794UA
Make and model
Boeing 777222
Aircraft serial
26953
Aircraft time
71,004 hours, 9,915 cycles
Engine
Pwa PW40903
Part
Warning System
Condition
Activated
Location
Cockpit
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

MAINT MSG 75-50721 'TURBINE CASE CLG AIR VLV ACTR (L ENG CH B) LPT POSITION FEEDBACK IS OUT OF RANGE' HITS OFTEN.