Service difficulty report · Control Valve · Boeing 737890

Difficulty date
April 18, 2013
Submitted
April 23, 2013
Operation
Air carrier
Aircraft
N594AS
Make and model
Boeing 737890
Aircraft serial
35191
Aircraft time
19,415 hours, 5,990 cycles
Engine
Cfmint CFM567B273B3
Part
Control Valve
Condition
Faulted
Stage of operation
TX
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

AIR COND MASTER CAUTION AND OVERHEAD PACK LIGHT ILLUMINATED ON RECALL, BOTH LIGHTS EXTINGUISHED WHEN MASTER CAUTION RESET. BOTH AUTO TEMP CONTROLLERS BITE TESTED AND CLEARED TCV FAULT LOGGED IN NR 2 CONTROLLER. RAN BOTH TEMP CONTROLLS BITE TEST AND NO CURRENT FAULT NOTED AFTER. BOTH OPS CK GOOD REF MM 21-62, TASK 801.