What was found
ON SHORT FINAL CAPTAINS LEFT WINDOW OVER HEAT WARNING LIGHT ILLUMINATED, (WE TURNED THE WINDOW HEAT SWITCH OFF AND LANDED). GROUNDED - YES. REMOVED & REPLACED WINDOW HEAT CONTROL UNIT REF AMM 30-41-11. OPS NORMAL.
- Difficulty date
- July 7, 2019
- Submitted
- July 23, 2019
- Operation
- Air carrier
- Aircraft
- N472AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 60580
- Aircraft time
- 16,959 hours, 5,477 cycles
- System (JASC)
- 3040 · Windshield/Door Rain/Ice Removal
- Part
- Control Unit
- Part number
- 8300005604
- Part serial
- 23536E
- Condition
- Failed
- Location
- Window Heat
- Part time
- 17,059 hours, 5,503 cycles
- Stage of operation
- AP
- 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.