Vny C414 departure makes incorrect turn on departure procedure.

Attributes
ACN	571883
Time
Date	200301
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : vny.airport
State Reference	CA
Altitude	msl single value : 4500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : vny.tower
Operator	general aviation : personal
Make Model Name	Chancellor 414A & C414
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : canoga8.gmn
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : multi engine
Experience	flight time last 90 days : 75 flight time total : 10000 flight time type : 500
ASRS Report	571883
Person 2
Affiliation	government : faa
Function	controller : local
Events
Anomaly	non adherence : published procedure non adherence : clearance other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance Chart Or Publication
Primary Problem	Flight Crew Human Performance

Narrative:

I requested and was issued SID (CANOGA8.gmn) on takeoff. Local controller advised 'start left turn to fly the SID' or similar. I checked in with socal and was issued barometer. No vectors given. After flying 255 degree heading to intercept gmn radial, no further instructions were given, so I started right turn to 'fly the SID'. ATC complained, turned me back. 1) this is a radar SID, so ATC should have issued vectors. 2) I probably should have challenged at crossing, not turned. Confusion, because of local controller 'fly SID,' which I interpreted as like 'own navigation' and lack of vectors from socal.

Original NASA ASRS Text

Title: VNY C414 DEP MAKES INCORRECT TURN ON DEP PROC.

Narrative: I REQUESTED AND WAS ISSUED SID (CANOGA8.GMN) ON TKOF. LCL CTLR ADVISED 'START L TURN TO FLY THE SID' OR SIMILAR. I CHKED IN WITH SOCAL AND WAS ISSUED BAROMETER. NO VECTORS GIVEN. AFTER FLYING 255 DEG HDG TO INTERCEPT GMN RADIAL, NO FURTHER INSTRUCTIONS WERE GIVEN, SO I STARTED R TURN TO 'FLY THE SID'. ATC COMPLAINED, TURNED ME BACK. 1) THIS IS A RADAR SID, SO ATC SHOULD HAVE ISSUED VECTORS. 2) I PROBABLY SHOULD HAVE CHALLENGED AT XING, NOT TURNED. CONFUSION, BECAUSE OF LCL CTLR 'FLY SID,' WHICH I INTERPED AS LIKE 'OWN NAV' AND LACK OF VECTORS FROM SOCAL.

Data retrieved from NASA's ASRS site as of July 2007 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.