Medium Transport; Low Wing; 2 Turbojet Eng
Flight Crew Air Transport Pilot (ATP)
Human-Machine Interface; Communication Breakdown; Training / Qualification
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; Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Equipment / Tooling; Human Factors; Procedure
Our arrival into DAL was to Descend Via the JFRYE3; NUKLZ transition. At GREGS; an 89 degree left turn is required; as well as a crossing at 10;000' and 250kts. The arrival was correctly loaded from the FMS and the aircraft was on autopilot throughout the incident.The leading turn past GREGS was unusually wide; causing ATC to query us about why we were turning so far east of GREGS; and he subsequently as(as)signed a southerly heading to bring us out of unprotected airspace northeast of GREGS. The remainder of the flight was uneventful. While taxiing in; we were asked to phone Center to discuss the event.
C680 Pilot reported having issues with the FMS while flying a STAR requiring a large turn and altitude restriction.