Heading track deviation. Non adherence to ATC clearance instruction.

Attributes
ACN	354370
Time
Date	199611
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 7000 msl bound upper : 7000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	departure other departure sid : sid enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : instrument pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 3000 flight time type : 275
ASRS Report	354370
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 15000 flight time type : 2000
ASRS Report	354366
Events
Anomaly	non adherence : published procedure non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On climb out on laxx 2 departure, SID required a turn to 220 degree heading. ZLA then gave a heading to 160 degrees. A switch to the next controling center also gave a heading change. A 100 degree heading was read back (or believed to be read back). When passing 120 degree heading, ATC called saying the heading assigned was 160 degrees. We then turned back to 160 degrees. Confusion may have occurred due to a call sign of similar sounding aircraft identify.

Original NASA ASRS Text

Title: HDG TRACK DEV. NON ADHERENCE TO ATC CLRNC INSTRUCTION.

Narrative: ON CLBOUT ON LAXX 2 DEP, SID REQUIRED A TURN TO 220 DEG HDG. ZLA THEN GAVE A HDG TO 160 DEGS. A SWITCH TO THE NEXT CTLING CTR ALSO GAVE A HDG CHANGE. A 100 DEG HDG WAS READ BACK (OR BELIEVED TO BE READ BACK). WHEN PASSING 120 DEG HDG, ATC CALLED SAYING THE HDG ASSIGNED WAS 160 DEGS. WE THEN TURNED BACK TO 160 DEGS. CONFUSION MAY HAVE OCCURRED DUE TO A CALL SIGN OF SIMILAR SOUNDING ACFT IDENT.

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.