- Difficulty date
- October 14, 2020
- Submitted
- October 15, 2020
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36356
- Aircraft time
- 15,928 hours, 5,091 cycles
- Part
- Sensor
- Condition
- Malfunctioned
- Location
- Window Heat
- Stage of operation
- TX
- 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
L1 WINDOW OVERHEAT ON GROUND 16 DEGREES C OUTSIDE TEMP. GROUNDED-YES. BITE CHECKED M321 WHCU. LT FRONT FAULT FAULTS SENSOR, REF B737-900 FIM 30-41 TASK 801 REF FIM 30-41 TASK 812 & B737-900 AMM 30-41-11. SELECTED OVERRIDE MODE UTILIZING THE SPARE SENSOR. BITE CHECK NOW GOOD. ETOPS GROUND VERIFICATION TEST PASS.