Track deviation for air carrier widebody transport advtech aircraft on sea 2 SID.

Attributes
ACN	158203
Time
Date	199009
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sea
State Reference	WA
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : sea
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude climbout : initial climbout : takeoff
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 15000 flight time type : 250
ASRS Report	158203
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 90 flight time total : 14000 flight time type : 250
ASRS Report	158463
Events
Anomaly	non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance 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:

The sea 2 departure requires flying the sea 338 degree right for noise abatement. The sea 358 degree right was programmed in error. I flew the 358 degree right rather than the 338 degree right. As soon as departure noticed our deviation we were given a radar vector. No conflict occurred. Besides human frailty, the body's diurnal cycle came into effect for me. Body time was very early am after a x-country trip. I, for one, shall be more cautious than ever on the back side of the clock. It's frustrating to call upon your mind for something you've done hundreds of times and have it feed you erroneous information. Supplemental information from acn 158463: I didn't notice the error until departure control informed us due to the slight difference between runway heading and the 358 degree right (approximately 60 seconds after takeoff about 3000' climbing). We immediately turned to assigned 300 degree heading and were cleared to intercept the 338 degree right to helns intersection.

Original NASA ASRS Text

Title: TRACK DEVIATION FOR ACR WDB ADVTECH ACFT ON SEA 2 SID.

Narrative: THE SEA 2 DEP REQUIRES FLYING THE SEA 338 DEG R FOR NOISE ABATEMENT. THE SEA 358 DEG R WAS PROGRAMMED IN ERROR. I FLEW THE 358 DEG R RATHER THAN THE 338 DEG R. AS SOON AS DEP NOTICED OUR DEVIATION WE WERE GIVEN A RADAR VECTOR. NO CONFLICT OCCURRED. BESIDES HUMAN FRAILTY, THE BODY'S DIURNAL CYCLE CAME INTO EFFECT FOR ME. BODY TIME WAS VERY EARLY AM AFTER A X-COUNTRY TRIP. I, FOR ONE, SHALL BE MORE CAUTIOUS THAN EVER ON THE BACK SIDE OF THE CLOCK. IT'S FRUSTRATING TO CALL UPON YOUR MIND FOR SOMETHING YOU'VE DONE HUNDREDS OF TIMES AND HAVE IT FEED YOU ERRONEOUS INFO. SUPPLEMENTAL INFO FROM ACN 158463: I DIDN'T NOTICE THE ERROR UNTIL DEP CTL INFORMED US DUE TO THE SLIGHT DIFFERENCE BTWN RWY HDG AND THE 358 DEG R (APPROX 60 SECS AFTER TKOF ABOUT 3000' CLBING). WE IMMEDIATELY TURNED TO ASSIGNED 300 DEG HDG AND WERE CLRED TO INTERCEPT THE 338 DEG R TO HELNS INTXN.

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.