# SDR ASAA2017090821870

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 2017
- Submitted: September 11, 2017
- Operation: Air carrier
- Aircraft: [N431AS](https://openairdocs.org/aircraft/N431AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43255
- Aircraft time: 15,444 hours, 5,096 cycles
- System (JASC): [3010 · Airfoil Anti/De-ice System](https://openairdocs.org/jasc/3010)
- Part: Anti-Ice System
- Condition: Malfunctioned
- Location: Rt Wing
- Stage of operation: TX
- 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/ASAA2017090821870

## Discrepancy

DURING REFUELING,  NOTED THE RT WING ANTI-ICE ON WITH SWITCH SELECTED OFF.   ACFT GROUNDED. CYCLED WING ANTI-ICE VALVE CIRCUIT BREAKLER ON THE P18-3 PANEL, CYCLED RT WING ANTI-ICE SWITCH, OPS CHECKED NORMAL IAW AMM 30-11-11, NO HISTORY FOR 30 DAYS.

---
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.