Service difficulty report · Control Unit · Boeing 737990ER

Difficulty date
April 29, 2019
Submitted
May 14, 2019
Operation
Air carrier
Aircraft
N479AS
Make and model
Boeing 737990ER
Aircraft serial
60576
Aircraft time
15,212 hours, 4,954 cycles
Part
Control Unit
Part number
8300005605
Part serial
24263
Condition
Faulted
Location
E&E Bay
Part time
15,314 hours, 4,987 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

LEFT SIDE WINDOW OVERHEAT. GROUNDED - YES. RELEASED PER MEL 30-11E LEFT NR 2 WINDOW HEAT INOP. FAULT HISTORY SHOWED WINDOW SENSOR. BIT VERIFY GOOD. DUE TO HISTORY REMOVED AND REPLACED L SIDE WINDOW HEAT CONTROL UNIT REF AMM 30-41-11. OPS CHECK GOOD. MEL 30-11E CLEARED.