Widebody transport aircraft fails to turn as prescribed on SID.

Attributes
ACN	313110
Time
Date	199508
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : lax
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff climbout : initial
Route In Use	departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : private pilot : instrument pilot : commercial pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 180 flight time total : 8000 flight time type : 1500
ASRS Report	313110
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

As part of takeoff clearance from runway 25R at lax, tower added that traffic off runway 25L was continuing straight out, keep him in sight, cleared for takeoff, winds are etc. I don't know if the length of the transmission caused the confusion or just fatigue but we didn't turn when we should have. It was the laxx 2 departure. At the smo 160 degree radial we should have turned to 220 degrees. We did not. The captain and flight engineer thought the tower told us to go straight out in our takeoff clearance. I thought we should have turned, I just simply forgot. Tower switched us to socal approach (departure). Socal approach simply told us to turn to a heading. No comment about our departure/track was made.

Original NASA ASRS Text

Title: WDB ACFT FAILS TO TURN AS PRESCRIBED ON SID.

Narrative: AS PART OF TKOF CLRNC FROM RWY 25R AT LAX, TWR ADDED THAT TFC OFF RWY 25L WAS CONTINUING STRAIGHT OUT, KEEP HIM IN SIGHT, CLRED FOR TKOF, WINDS ARE ETC. I DON'T KNOW IF THE LENGTH OF THE XMISSION CAUSED THE CONFUSION OR JUST FATIGUE BUT WE DIDN'T TURN WHEN WE SHOULD HAVE. IT WAS THE LAXX 2 DEP. AT THE SMO 160 DEG RADIAL WE SHOULD HAVE TURNED TO 220 DEGS. WE DID NOT. THE CAPT AND FE THOUGHT THE TWR TOLD US TO GO STRAIGHT OUT IN OUR TKOF CLRNC. I THOUGHT WE SHOULD HAVE TURNED, I JUST SIMPLY FORGOT. TWR SWITCHED US TO SOCAL APCH (DEP). SOCAL APCH SIMPLY TOLD US TO TURN TO A HDG. NO COMMENT ABOUT OUR DEP/TRACK WAS MADE.

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.