Service difficulty report · Valve · Boeing 737890

Difficulty date
December 27, 2008
Submitted
December 29, 2008
Operation
Air carrier
Aircraft
N579AS
Make and model
Boeing 737890
Aircraft serial
35187
Aircraft time
7,162 hours, 2,130 cycles
Part
Valve
Part number
3989083
Part serial
4533
Condition
Inoperative
Location
Lt Pack
Part time
22,861 hours, 9,808 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 "AIR CONDITIONING" MASTER CAUTION ILLUMINATES "PACK" LIGHT ILLUMINATES. RESETTING MASTER CAUTION CANCELS ALL LIGHTS LT PACK. GROUNDED YES. REPLACED LT PACK ZONE TEMP CONTROL VALVE P/N 398908 3 VERIFIED WITH SEAMC ED ETOPS COMPATIBLE PART. ALL BIT AND OPS CHECKS C/W PER BMM 21-51-10.