Service difficulty report · Anti-Ice Valve · Cessna 680A

Difficulty date
December 26, 2025
Submitted
December 29, 2025
Operation
Air carrier
Aircraft
N964QS
Make and model
Cessna 680A
Aircraft serial
680A0418
Aircraft time
840 hours, 596 cycles
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

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

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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