Citation II S2/Bravo (C550)
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 60; Flight Crew Total 7000; Flight Crew Type 2000
Human-Machine Interface; Confusion; 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 Issued Advisory / Alert; Flight Crew Returned To Clearance; Flight Crew Became Reoriented
Chart Or Publication; Aircraft
I departed Runway 22L at BOS for the BLZZR 3 departure. I flew through the 140 degree bearing to TJAYY where a turn should have been made and was given a vector by ATC.With the 140 degree course selected to TJAYY the needle never gradually moved to center. It did however bang back and forth from side to side in the instrument. I believe that airspeed; high angle of [attack] and close proximity of the fix actually creates a 'cone of confusion' type situation. The digital DTK (direct track) to the fix did not 'count down' like I would have expected it to. I believe this DP would be more 'user friendly' if the first turn off of the runway heading was a heading assignment executed at a DME fix or specific altitude. (Ref) Morristown 6 departure RWY 23 (MMU).
A CE-550 departed on the BOS Runway 22L BLZZR3 RNAV SID but did not make the turn to TJAYY because the FMS did not correctly process the departure.