Service difficulty report · Control Module · Boeing 737990ER

Difficulty date
October 11, 2015
Submitted
October 15, 2015
Operation
Air carrier
Aircraft
N471AS
Make and model
Boeing 737990ER
Aircraft serial
41703
Aircraft time
3,977 hours, 1,300 cycles
Part
Control Module
Part number
10194391001
Part serial
2014080031
Condition
Failed
Location
Cabin Pressure
Part time
3,977 hours, 1,300 cycles
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

PRESSURIZATION CONTROL PANEL ALTIMETER WINDOW FLICKERS INTERMITTENTLY IN FLIGHT. ACFT GROUNDED. R & R CABIN PRESSURE CONTROL MODULE IAW AMM 21-31-02. OPS CHECK NORMAL.