# SDR ASAA2019052029413

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2019
- Submitted: May 22, 2019
- Operation: Air carrier
- Aircraft: [N413AS](https://openairdocs.org/aircraft/N413AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35205
- Aircraft time: 24,400 hours, 7,921 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Module
- Part number: 233A3201302
- Part serial: F04773
- Condition: Failed
- Location: Window Heat
- Part time: 24,420 hours, 7,929 cycles
- Stage of operation: CR
- 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/ASAA2019052029413

## Discrepancy

L SIDE WINDOW OVERHEAT LIGHT ILLUMINATED AT CRUISE FL350. PERFORMED QRH 3.5 LIGHT DID STAY EXTINGUISHED. GROUNDED - YES. RESISTANCE CKS TEMP SENSOR & HEAT FILM NORMAL REF B737-900 AMM 30-41-21 TERM TAP CORRECT. DUE TO HISTORY REPLACED P5-9 WINDOW/PITOT HEAT MODULE & COIL CORD REF AMM 30-41-41 14 C/B OPEN & CLOSED OPS NORMAL.

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