Service difficulty report · Control Valve · Boeing 737890

Difficulty date
December 3, 2013
Submitted
December 5, 2013
Operation
Air carrier
Aircraft
N563AS
Make and model
Boeing 737890
Aircraft serial
35180
Aircraft time
27,333 hours, 8,418 cycles
Part
Control Valve
Part number
3989083
Part serial
8625
Condition
Faulted
Location
A/C Bay
Part time
27,449 hours, 9,227 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

LEFT PACK LIGHT & AIR CONDITION ILLUMINATED ON RECALL. FOLLOWED QRH. LIGHT EXTINGUISHES ON RESET. ACFT GROUNDED. IAW FIM TASK 21-53, TASK 803 PACK LIGHT DID NOT COME ON WHEN RUNNING PACK. INTERMITTENT FAULT. CHECKED LT PACK ZONE TEMP CONTROLLER, FOUND TCV LIGHT ILLUMINATED ON BIT AND PREVIOUS FLT. REPLACED LEFT PACK TCV IAW AMM 21-51-10. LEFT PACK ZONE TEMP CONTROLLER FOUND NO FAULTS.