A ce-550 departed on the bos runway 22L BLZZR3 RNAV SID but did not make the turn to tjayy because t...

Attributes
ACN	1318631
Time
Date	201512
Local Time Of Day	1201-1800
Place
Locale Reference	BOS.Airport
State Reference	MA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Citation II S2/Bravo (C550)
Operating Under FAR Part	Part 91
Flight Phase	Climb
Route In Use	SID BLZZR3
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 60 Flight Crew Total 7000 Flight Crew Type 2000
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types

Narrative:

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 runway 23 (mmu).

Original NASA ASRS Text

Title: 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.

Narrative: 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).

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

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.