# SDR DXTA2026010506400

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 1, 2026
- Submitted: January 6, 2026
- Operation: Air carrier
- Aircraft: [N578QS](https://openairdocs.org/aircraft/N578QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0135
- Aircraft time: 8,248 hours, 5,432 cycles
- Engine: Pwc PW306D1
- System (JASC): [7510 · Engine Anti-Icing System](https://openairdocs.org/jasc/7510)
- Part: Anti-Ice System
- Part number: 5199006
- Part serial: 0812
- Condition: Faulty
- Location: Lt Engine
- Stage of operation: CL
- 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/DXTA2026010506400

## Discrepancy

CLIMBING OUT FLIGHT LEVEL 230 IN MCT STILL. IN ICING CONDITIONS ALL ANTI-ICE ON.   AT APPROXIMATELY THREE MINUTES THE A/I ENGINE COLD L ILLUMINATED, AND DID NOT EXTINGUISH.  WE INITIATED THE QRH AND ACCOMPLISH IT. THE LIGHT REMAIN ILLUMINATED THEN EXTINGUISH WITH THE L ENG BLD AIR HP SELECTED. WE EXIT ICING CONDITIONS AND PROCEED TO DESTINATION. NEXT FLIGHT WAS TO KLAS AND IT WAS IFR WITH RAIN. CORRECTIVE ACTION: REMOVED AND REPLACED #1 ENGINE INLET COWL ANT- ICE PRESSURE REGULATING SHUTOFF VALVE WITH CUSTOMER SUPPLIED UNIT IN ACCORDANCE WITH CESSNA 6B0A AMM 30-20-05. OPS AND LEAK CHECKS GOOD. INSTALLED VALVE INSPECTED BY C&L AVIATION SERVICES LLC, CERT# J2SR196J, WO# X1124, 24/DEC/2025

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