Service difficulty report · Modulating Valve · Boeing 737*

Difficulty date
December 20, 2012
Submitted
December 31, 2012
Operation
Air carrier
Aircraft
N403AS
Make and model
Boeing 737*
Aircraft serial
41730
Aircraft time
345 hours, 140 cycles
Part
Modulating Valve
Part number
3989084
Part serial
18300
Condition
Inoperative
Location
A/C Bay
Part time
395 hours, 159 cycles
Stage of operation
NR
How discovered
9
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

F/O TEMP ZONE LIGHT ILLUMINATES ON RECALL. R & R AFT ZONE TEMP MODULATING VALVE IAW AMM 21-61-21. OPS CHECKED NORMAL.