Departing BE20 crew started turn on course instead of maintaining runway heading.

Attributes
ACN	494143
Time
Date	200012
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bfi.airport
State Reference	WA
Altitude	msl single value : 1000
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Controlling Facilities	tracon : s46.tracon
Operator	general aviation : corporate
Make Model Name	Super King Air 200/Huron
Operating Under FAR Part	Part 135
Navigation In Use	Other
Flight Phase	climbout : vacating altitude
Route In Use	departure sid : kent 3
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 135 flight time total : 6150 flight time type : 2300
ASRS Report	494143
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 150 flight time total : 7100 flight time type : 1900
ASRS Report	494140
Events
Anomaly	non adherence : published procedure non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	other
Supplementary
Problem Areas	Chart Or Publication Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Incident occurred on the initial climb portion of the kent 3 SID from bfi, seattle, wa. We had been cleared to ccr airport via the kent 3, J-1 to battleground then direct ccr. After takeoff, there was some confusion in the cockpit about the departure heading to intercept J-1 and the aircraft heading inadvertently drifted approximately 30 degrees right from runway heading (130 degrees). Shortly after establishing contact with seattle departure, the controller queried us about our heading and directed a turn to the east to 070 degrees. Departure instructions were verified with the controller and the remainder of the SID was flown without incident. No known traffic conflicts were encountered. Causes: incident was caused by the PIC misreading the departure plate, resulting in the heading confusion and subsequent heading deviation. Factors: the following factors contributed to the incident: 1) lack of familiarity with departure airfield and local environment. 2) pre-sunrise departure. 3) inadequate review and briefing of SID by both crew members. Corrective action: company SOP's reviewed and changed to require SID challenge and response actions from both crew members during predep briefing.

Original NASA ASRS Text

Title: DEPARTING BE20 CREW STARTED TURN ON COURSE INSTEAD OF MAINTAINING RWY HDG.

Narrative: INCIDENT OCCURRED ON THE INITIAL CLB PORTION OF THE KENT 3 SID FROM BFI, SEATTLE, WA. WE HAD BEEN CLRED TO CCR ARPT VIA THE KENT 3, J-1 TO BATTLEGROUND THEN DIRECT CCR. AFTER TKOF, THERE WAS SOME CONFUSION IN THE COCKPIT ABOUT THE DEP HDG TO INTERCEPT J-1 AND THE ACFT HDG INADVERTENTLY DRIFTED APPROX 30 DEGS R FROM RWY HDG (130 DEGS). SHORTLY AFTER ESTABLISHING CONTACT WITH SEATTLE DEP, THE CTLR QUERIED US ABOUT OUR HDG AND DIRECTED A TURN TO THE E TO 070 DEGS. DEP INSTRUCTIONS WERE VERIFIED WITH THE CTLR AND THE REMAINDER OF THE SID WAS FLOWN WITHOUT INCIDENT. NO KNOWN TFC CONFLICTS WERE ENCOUNTERED. CAUSES: INCIDENT WAS CAUSED BY THE PIC MISREADING THE DEP PLATE, RESULTING IN THE HDG CONFUSION AND SUBSEQUENT HDG DEV. FACTORS: THE FOLLOWING FACTORS CONTRIBUTED TO THE INCIDENT: 1) LACK OF FAMILIARITY WITH DEP AIRFIELD AND LCL ENVIRONMENT. 2) PRE-SUNRISE DEP. 3) INADEQUATE REVIEW AND BRIEFING OF SID BY BOTH CREW MEMBERS. CORRECTIVE ACTION: COMPANY SOP'S REVIEWED AND CHANGED TO REQUIRE SID CHALLENGE AND RESPONSE ACTIONS FROM BOTH CREW MEMBERS DURING PREDEP BRIEFING.

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.