Service difficulty report · Heater · Boeing 737990ER

Difficulty date
April 28, 2019
Submitted
April 30, 2019
Operation
Air carrier
Aircraft
N413AS
Make and model
Boeing 737990ER
Aircraft serial
35205
Aircraft time
24,186 hours, 7,855 cycles
Part
Heater
Condition
Malfunctioned
Location
Cockpit Window
Stage of operation
DE
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

WINDOW HEAT LEFT SIDE CAME BACK ON DURING DESCENT INTO PDX. GROUNDED - YES. PERFORMED WHCU SYS TEST IAW B737-900 AMM 30-41-11-710-801. NO FAULT NOTED. GREEN LIGHT SHOWN. OPS NORMAL.