Service difficulty report · Sensor · Boeing 737990ER

Difficulty date
May 18, 2022
Submitted
June 1, 2022
Operation
Air carrier
Aircraft
N493AS
Make and model
Boeing 737990ER
Aircraft serial
41727
Aircraft time
22,120 hours, 6,962 cycles
Part
Sensor
Part number
56100026
Part serial
14212H3793
Condition
Faulty
Location
Flight Deck
Part time
26,223 hours, 8,241 cycles
Stage of operation
CL
How discovered
V
Nature of condition
M
Precautionary procedure
K

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

What was found

ON CLIMBOUT PASSING FL 180, RT SIDE WINDOW HEAT LIGHT OVERHEAT ILLUMINATED, LIGHT EXTINGUSHED W/ WINDOW HEAT SW OFF. WAITED 5 MIN. PASSING FL 300, TURN SW ON - OVERHEAT LIGHT STILL ILLUMINATED. SW OFF FOR REMAINDER OF FLIGHT. GROUNDED - YES. ON DEFERRAL.