# SDR ASAA12511415

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 16, 2012
- Submitted: April 18, 2012
- Operation: Air carrier
- Aircraft: [N587AS](https://openairdocs.org/aircraft/N587AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35684
- Aircraft time: 17,183 hours, 5,143 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Control Unit
- Part number: 8300005604
- Part serial: 3036C
- Condition: Malfunctioned
- Location: Window Heat
- Part time: 127 hours, 41 cycles
- Stage of operation: AP
- 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/ASAA12511415

## Discrepancy

RT SIDE WINDOW HEAT, OVERHEAT LIGHT ILLUMINATED ON APPROACH.  ACCOMPLISHED QRH PROCEDURE AND LIGHT REMAINED EXTINGUISHED. GROUNDED. DUE TO UNIT HISTORY ENGINEERING REQUESTS REPLACEMENT OF WCHU.  REPLACED RT SIDE WINDOW HEAT CONTROL UNIT.  OPS CHECKED GOOD, REF AMM 30-41-11.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.