Service difficulty report · Control Valve · Boeing 737890

Difficulty date
January 13, 2012
Submitted
January 18, 2012
Operation
Air carrier
Aircraft
N535AS
Make and model
Boeing 737890
Aircraft serial
35200
Aircraft time
3,683 hours, 1,096 cycles
Part
Control Valve
Part number
3989083
Part serial
8322
Condition
Faulty
Location
Ac Bay
Part time
19,507 hours, 7,215 cycles
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
J

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

What was found

RIGHT PACK LIGHT ILLUMINATES ON RECALL AND EXTINGUISHES WITH MASTER CAUTION. ON BITE TEST TCV FAULT LIGHT CAME ON. REPLACED THE RIGHT TEMPERATURE CONTROL VALVE OPS NML REF MM 21 51 10 400 801. BITE TEST AND LEAK CHECK GOOD PER SAME.