Service difficulty report · Valve · Boeing 737890

Difficulty date
April 11, 2011
Submitted
April 15, 2011
Operation
Air carrier
Aircraft
N534AS
Make and model
Boeing 737890
Aircraft serial
35202
Aircraft time
752 hours, 233 cycles
Part
Valve
Part number
3989083
Part serial
1755
Condition
Failed
Location
Rt A/C Pack
Part time
56,000 hours, 30,317 cycles
Stage of operation
TX
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

RT PACK LIGHT ILLUMINATES ON RECALL. BITE TEST ON NR 2 TEMP CONTROLLER SHOWS TCV FAIL. REPLACED RT TEMPERATURE CONTROL VALVE. OPS CHECKED NORMAL REF AMM 21-51-10. LEAK CHECKED GOOD.