SDR ASAA201902047999

Service difficulty report · Module · Boeing 737990ER

Difficulty date: January 30, 2019
Submitted: February 4, 2019
Operation: Air carrier
Aircraft: N474AS
Make and model: Boeing 737990ER
Aircraft serial: 40715
Aircraft time: 14,275 hours, 4,717 cycles
System (JASC): 3040 · Windshield/Door Rain/Ice Removal
Part: Module
Part number: 233A3201302
Part serial: F06034
Condition: Failed
Location: Window Heat
Part time: 14,301 hours, 4,724 cycles
Stage of operation: CR
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

AT CRUISE FL310, LEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. DID QRH, AFTER SWITCH OFF FOR 5 MINUTES SELECTED ON OVERHEAT LIGHT AGAIN ILLUMINATED, SWITCHED OFF, QRH COMPLETE. GROUNDED - YES. REMOVED AND REPLACED WINDOW/PITOT HEAT MODULE P5-9 IAW B737-900 AMM 30-41-41-000-801 AND 30-41-41-400-801, OPS CHECK GOOD.