Service difficulty report · Control Valve · Boeing 737890

Difficulty date
February 7, 2019
Submitted
February 13, 2019
Operation
Air carrier
Aircraft
N568AS
Make and model
Boeing 737890
Aircraft serial
35183
Aircraft time
45,779 hours, 13,866 cycles
Part
Control Valve
Part number
3989085
Part serial
18522
Condition
Failed
Location
Right Ecs Bay
Part time
21,675 hours, 7,015 cycles
Stage of operation
NR
How discovered
V
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 HAND PACK LIGHT COMES ON WITH MASTER RECALL AND DOES RESET WITH MASTER CAUTION PUSH TO RESET. GROUNDED - YES. REMOVED & REPLACED RH PACK TCV REF B737-800 AMM 21-51-10 PERFORMED OPERATIONAL / FUNCTIONAL CHECK OPS CKS NORMAL. BITE CK. ACCOMPLISHED REF AMM 21-61-00-700-806-002 BITE CK. PASSED.