Service difficulty report · Control Valve · Boeing 737890

Difficulty date
December 21, 2017
Submitted
December 26, 2017
Operation
Air carrier
Aircraft
N568AS
Make and model
Boeing 737890
Aircraft serial
35183
Aircraft time
41,572 hours, 12,646 cycles
Part
Control Valve
Part number
3989083
Part serial
1390
Condition
Faulted
Location
Rt A/C Pack
Part time
26,632 hours, 7,823 cycles
Stage of operation
NR
How discovered
9
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 LIGHT ILLUMINATED DURING MASTER CAUTION RECALL, EXTINGUSHED WHEN MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED PACK ZONE TEMPERATURE BITE IAW AMM 21-61-00-700-806-002. NR 2 CONTROLLER FAULTED TCV. REMOVED & REPLACED TEMPERATURE CONTROL VALVE IAW AMM 21-51-10. OPS CHECKED GOOD.