Service difficulty report · Module · Boeing 737990ER

Difficulty date
December 10, 2015
Submitted
December 14, 2015
Operation
Air carrier
Aircraft
N478AS
Make and model
Boeing 737990ER
Aircraft serial
44105
Aircraft time
1,703 hours, 527 cycles
Part
Module
Part number
10194391001
Part serial
2015050036
Condition
Failed
Location
Cabin Pressure
Part time
1,690 hours, 520 cycles
Stage of operation
NR
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

CABIN PRESSURIZATION PANEL LIGHTING DOES NOT DIM WITH PANEL BRIGHTNESS CONTROL. ACFT GROUNDED. VERIFIED DEFECT, ALSO FOUND OUTFLOW VALVE INDICATOR INOPERATIVE. R & R CPC MODULE REF AMM 21-31-02, OPS CHECK NORMAL.