EMB-505 / Phenom 300
Flight Crew Air Transport Pilot (ATP)
Confusion; Human-Machine Interface; Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance; Air Traffic Control Issued New Clearance; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Aircraft; Human Factors; Procedure
Clearance was to do the SJC2 departure and after MOONY direct SJC. Programmed properly; verified by both pilots; and course line on map display showed proper course. Upon interception of course to MOONY; aircraft decided to turn direct SJC 18 miles early. The Pilot Monitoring notified Pilot Flying and ATC. ATC issued a new clearance and no further action was required. No suggestions; we caught the error and acted upon it. However the Phenom has pulled tricks like this and others on our flight crews more than any other type aircraft I have flown in nearly 30 years of flying.
Reporter stated this was a recurring issue on this SID. Garmin 3000.
An EMB-505 Phenom pilot reported their aircraft turned to a fix on the SID 18 miles early.