Service difficulty report · Warning System · Boeing 777222

Difficulty date
November 17, 2011
Submitted
December 16, 2011
Operation
Air carrier
Aircraft
N796UA
Make and model
Boeing 777222
Aircraft serial
26931
Aircraft time
61,948 hours, 8,783 cycles
Engine
Pwa PW40903
Part
Warning System
Condition
False Activation
Location
Bleed Air Sys
Stage of operation
NR
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

STATUS MESSAGE BLEED FAMV R. AHM SHOWS IN ADDITION TO MSG 36-10340, MSG 36-10532 FOR RVDT CIRCUIT OPEN OR SHORTED. REPLACED VALVE PER MM. NO HELP, REACTIVATED FAMV, AIR SUPPLY CONTROL SYS TEST PASSED ON MAT & ENG AIR SUPPLY TEST FOR FAMV NORMAL & MSG CLEARED.