Air carrier track deviation on initial climb.

Attributes
ACN	314870
Time
Date	199509
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	msl bound lower : 1500 msl bound upper : 1500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 6600 flight time type : 1500
ASRS Report	314870
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 180 flight time total : 20000 flight time type : 3180
ASRS Report	314869
Events
Anomaly	conflict : airborne less severe non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On climb out from dfw, both captain and first officer heard ATC say, 'air carrier abcd, turn left 050 degrees, join the dfw 067 degree radial, climb to 17000 ft.' first officer read back clearance verbatim and captain began turn. Moments later, ATC gave air carrier abcd another clearance for an immediate right turn heading 180 degrees and asked why we were turning east. First officer replied that we received a previous clearance. ATC said that the previous clearance was for a different aircraft. Later, we heard another aircraft, air carrier abcb, on frequency.

Original NASA ASRS Text

Title: ACR TRACK DEV ON INITIAL CLB.

Narrative: ON CLBOUT FROM DFW, BOTH CAPT AND FO HEARD ATC SAY, 'ACR ABCD, TURN L 050 DEGS, JOIN THE DFW 067 DEG RADIAL, CLB TO 17000 FT.' FO READ BACK CLRNC VERBATIM AND CAPT BEGAN TURN. MOMENTS LATER, ATC GAVE ACR ABCD ANOTHER CLRNC FOR AN IMMEDIATE R TURN HDG 180 DEGS AND ASKED WHY WE WERE TURNING E. FO REPLIED THAT WE RECEIVED A PREVIOUS CLRNC. ATC SAID THAT THE PREVIOUS CLRNC WAS FOR A DIFFERENT ACFT. LATER, WE HEARD ANOTHER ACFT, ACR ABCB, ON FREQ.

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.