# SDR ASAA2015092813250

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 28, 2015
- Submitted: September 30, 2015
- Operation: Air carrier
- Aircraft: [N459AS](https://openairdocs.org/aircraft/N459AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36352
- Aircraft time: 6,136 hours, 1,990 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Module
- Part number: 233A3201302
- Part serial: F05273
- Condition: Malfunctioned
- Location: Window Heat
- Part time: 6,125 hours, 1,982 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015092813250

## Discrepancy

LEFT SIDE OVERHEAT, ON LIGHT NOT ILLUMINATED.  ACFT GROUNDED.  BITE CK LT SIDE WHCU FIM 30-41, TASK 801, NO FAULTS. OPS CHECKED LT SIDE WINDOW HEAT AMM 30-41-00 FOUND SIDE WINDOW LT WOULD NOT HEAT TO TEMP.  REPLACED LT SIDE WINDOW CONTROL UNIT & WINDOW HEAT CONTROL MODULE.  WINDOW HEAT CONT UNIT SYS TEST OK REF MM 30-41-11-710-801, WINDOW HEAT, OPS TEST OK REF MM 30-41-00-710-801 LT SIDE STABILIZED TEMP IS 101F WITH HEAT GUN.  TEMP WITHIN LIMITS.  PROBE & SENSOR HEAT TESTS OK REF MM 30-31-00-730-801 & AUTO OPS CK OK REF MM 30-31-00-750-801.  NO HISTORY 60 DAYS.

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