The air carrier flight crew of an medium large transport did not follow the SID instructions to turn at 3 DME. The departure controller alertly corrected them.

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Attributes
ACN	369540
Time
Date	199705
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bal airport : bwi
State Reference	MD
Altitude	msl bound lower : 6000 msl bound upper : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bwi
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 230 flight time total : 18000 flight time type : 13000
ASRS Report	369540
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	non adherence : published procedure non adherence : far non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were flying the swann two departure out of baltimore en route to pvd. The SID calls for a left turn at 3 DME to heading of 150 degrees. All other runways are to maintain runway heading. I misread SID and kept flying runway heading of 285 degrees. At 7 DME, baltimore departure called and directed a turn to comply with SID. This incident was caused by my not reading SID thoroughly.

Original NASA ASRS Text

Title: THE ACR FLC OF AN MLG DID NOT FOLLOW THE SID INSTRUCTIONS TO TURN AT 3 DME. THE DEP CTLR ALERTLY CORRECTED THEM.

Narrative: WE WERE FLYING THE SWANN TWO DEP OUT OF BALTIMORE ENRTE TO PVD. THE SID CALLS FOR A L TURN AT 3 DME TO HDG OF 150 DEGS. ALL OTHER RWYS ARE TO MAINTAIN RWY HEADING. I MISREAD SID AND KEPT FLYING RWY HDG OF 285 DEGS. AT 7 DME, BALTIMORE DEP CALLED AND DIRECTED A TURN TO COMPLY WITH SID. THIS INCIDENT WAS CAUSED BY MY NOT READING SID THOROUGHLY.

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.