Service difficulty report · Control Valve · Boeing 75723N

Difficulty date
April 24, 2007
Submitted
May 8, 2007
Operation
Air carrier
Aircraft
N517AT
Make and model
Boeing 75723N
Aircraft serial
27973
Engine
Rroyce RB211535E4
Part
Control Valve
Part number
3964801
Part serial
1339
Condition
Unserviceable
Location
Lt Pack
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
K

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

What was found

EICAS MSG L PACK OFF WITH SWITCH IN AUTO POSITION. PACK OFF LIGHT REMAINS ON WITH SWITCH MOVED TO STBY N, C OR W. REMOVED AND REPLACED FLOW CONTROL AND SHUTOFF VALVE IAW MM 21-51-01-2. OPS NORMAL. (K)

More about the Boeing 757-23N