Service difficulty report · Valve · Boeing 737890

Difficulty date
April 12, 2012
Submitted
April 16, 2012
Operation
Air carrier
Aircraft
N559AS
Make and model
Boeing 737890
Aircraft serial
35178
Aircraft time
21,141 hours, 6,414 cycles
Part
Valve
Part number
3989083
Part serial
5257
Condition
Malfunctioned
Location
Ac Bay
Part time
36,787 hours, 15,206 cycles
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

UPON MASTER RECALL THE CONT CABIN ZONE TEMP LIGHT ILLUMINATED AND EXTINGUISHED WHEN MASTER CAUTION SYSTEM IS RESET AS PER THE QRH. REMOVED & REPLACED CONT CABIN ZONE TEMP VLV REF MM 21 61 21 OPS & LEAK CHECK GOOD.