# SDR DXTA2025122906314

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 26, 2025
- Submitted: December 29, 2025
- Operation: Air carrier
- Aircraft: [N964QS](https://openairdocs.org/aircraft/N964QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0418
- Aircraft time: 840 hours, 596 cycles
- System (JASC): [3010 · Airfoil Anti/De-ice System](https://openairdocs.org/jasc/3010)
- Part: Anti-Ice Valve
- Part number: 99124957
- Part serial: 0306
- Condition: Failed
- Location: Zone 300
- 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/DXTA2025122906314

## Discrepancy

DURING THE ARRIVAL THE A/I STAB COLD L AMBER CAS MESSAGE ILLUMINATED AND WOULD NOT EXTINGUISH. THE QRH PROCEDURE WAS COMPLETED WITH NO SUCCESS.  WE CONTINUED ACCORDING TO THE QRH AND LANDED WITH THE FLAPS IN THE FLAPS 2 POSITION. CORRECTIVE ACTION: REMOVED DEFECTIIVE STAB A/ PRSOV. INSTALLED NEW LH STAB AA PRSOV IAW MM 30-15-05.

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