Service difficulty report · Valve · Boeing 777222

Difficulty date
April 5, 2014
Submitted
April 8, 2014
Operation
Air carrier
Aircraft
N788UA
Make and model
Boeing 777222
Aircraft serial
26942
Aircraft time
74,791 hours, 10,426 cycles
Engine
Pwa PW40903
Part
Valve
Condition
Faulty
Location
Ac Bay
Stage of operation
IN
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

RIGHT PACK MODE EICAS ADVISORY MESSAGE ILLUMINATED AFTER ENG START. REPLACED LOW LIMIT VLV IAW AMM 21-52-30.