Flight crew assumed that they were assigned runway heading for departure.

Attributes
ACN	433460
Time
Date	199904
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : bwi.airport
State Reference	MD
Altitude	msl single value : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bwi.tracon tower : bwi.tower tower : anc.tower
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : swann two
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	433460
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
ASRS Report	433154
Events
Anomaly	non adherence : published procedure non adherence : clearance other spatial deviation
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued alert controller : issued new clearance flight crew : returned to original clearance
Supplementary
Problem Areas	Airspace Structure Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were cleared to pvd via swann 2 departure. We were cleared for takeoff. I thought that the tower controller had told us to fly runway heading. The departure calls for a left turn at 3 DME to 150 degrees. We flew runway heading. When we were switched to departure control, he was upset that we had not turned. He issued a turn to 110 degrees to intercept the departure. There was no traffic conflict. We had taken off on this runway 2 other times on this trip, and had been given runway heading on one departure. We were given a turn to 150 degrees on the other.

Original NASA ASRS Text

Title: FLC ASSUMED THAT THEY WERE ASSIGNED RWY HDG FOR DEP.

Narrative: WE WERE CLRED TO PVD VIA SWANN 2 DEP. WE WERE CLRED FOR TKOF. I THOUGHT THAT THE TWR CTLR HAD TOLD US TO FLY RWY HDG. THE DEP CALLS FOR A L TURN AT 3 DME TO 150 DEGS. WE FLEW RWY HDG. WHEN WE WERE SWITCHED TO DEP CTL, HE WAS UPSET THAT WE HAD NOT TURNED. HE ISSUED A TURN TO 110 DEGS TO INTERCEPT THE DEP. THERE WAS NO TFC CONFLICT. WE HAD TAKEN OFF ON THIS RWY 2 OTHER TIMES ON THIS TRIP, AND HAD BEEN GIVEN RWY HDG ON ONE DEP. WE WERE GIVEN A TURN TO 150 DEGS ON THE OTHER.

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.