Service difficulty report · Control Valve · Boeing 737890

Difficulty date
October 14, 2014
Submitted
October 17, 2014
Operation
Air carrier
Aircraft
N559AS
Make and model
Boeing 737890
Aircraft serial
35178
Aircraft time
30,104 hours, 9,021 cycles
Part
Control Valve
Part number
3989083
Part serial
5335
Condition
Malfunctioned
Location
Rt A/C Pack
Part time
47,138 hours, 18,477 cycles
Stage of operation
NR
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 ILLUMINATES WITH RECALL, EXTINGUISHES WITH RESET. ACFT GROUNDED. ACCOMPLISHED BITE ON NR 2 TEMP CONTROLLER. FOUND TCV RED LIGHT ON. REPLACED RT PACK TEMP CONTROL VALVE IAW AMM TASK 21-51-10-000-801, 21-51-10-400-801. OPS TESTS PASSED- NO LEAKS.