Service difficulty report · Control Valve · Boeing 737890

Difficulty date
July 2, 2012
Submitted
August 2, 2012
Operation
Air carrier
Aircraft
N583AS
Make and model
Boeing 737890
Aircraft serial
35681
Aircraft time
18,965 hours, 5,731 cycles
Engine
Cfmint CFM567B27
Part
Control Valve
Part number
3989083
Part serial
11895
Condition
Failed
Location
Rt A/C Pack
Part time
12,390 hours, 3,784 cycles
Stage of operation
TX
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

ON RECALL RT PACK LIGHT ILLUMINATED WITH AIR CONDITION LIGHT ON SIX PACK ALL CLEAR WITH MASTER CAUTION RESET. PERFORMED PACK ZONE TEMPERATURE CONTROL BITE PR FIM 21-62 TASK 801 NR 2 (RT) ZONE TEMP CONTROLLER FAULTED THIS PACK TCV. PERFORMED FIM 21-61, TASK 831 A - F1. REMOVED RT PACK TEMPERATURE CONTROL VALVE IAW 21-51-10-000-801. INSTALLED RT PACK TEMPERATURE CONTROL VALVE IAW AMM 21-51-10-400-801. ACCOMPLISHED TEMPERATURE CONTROL VALVE INSTALLATION TEST IAW AMM 21-51-10-400-801 PARA-E CONTROL VALVE INSTALLATION TEST IS GOOD.