An air carrier large transport turned sooner than expected on the elmaa SID.

Attributes
ACN	249882
Time
Date	199308
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sea
State Reference	WA
Altitude	msl bound lower : 1000 msl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sea
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude cruise other ground : preflight
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 180
ASRS Report	249882
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 20000 flight time type : 2000
ASRS Report	249883
Events
Anomaly	aircraft equipment problem : critical non adherence : clearance non adherence : published procedure other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : returned to intended course or assigned course other
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Chart Or Publication
Air Traffic Incident	Pilot Deviation
Situations
Publication	Unspecified

Narrative:

Departing runway 16L at sea, aircraft flight director commanded turn to right prior to 5 mi sea fix (elmaa departure). LNAV selected. Controller intervened. Told us to fly heading back to left 160 degree heading and climb to 6000 ft. Complied with controller instructions and resumed SID. FMC's sea-sfo elmaa departure selected during preflight. No evasive action was necessary. Informed company maintenance and was advised engineering would be notified. Supplemental information from acn 249883: verification of departure SID confirmed right turn should be commenced at 5 DME. Company notified of programming error in navigation system.

Original NASA ASRS Text

Title: AN ACR LGT TURNED SOONER THAN EXPECTED ON THE ELMAA SID.

Narrative: DEPARTING RWY 16L AT SEA, ACFT FLT DIRECTOR COMMANDED TURN TO R PRIOR TO 5 MI SEA FIX (ELMAA DEP). LNAV SELECTED. CTLR INTERVENED. TOLD US TO FLY HDG BACK TO L 160 DEG HDG AND CLB TO 6000 FT. COMPLIED WITH CTLR INSTRUCTIONS AND RESUMED SID. FMC'S SEA-SFO ELMAA DEP SELECTED DURING PREFLT. NO EVASIVE ACTION WAS NECESSARY. INFORMED COMPANY MAINT AND WAS ADVISED ENGINEERING WOULD BE NOTIFIED. SUPPLEMENTAL INFORMATION FROM ACN 249883: VERIFICATION OF DEP SID CONFIRMED R TURN SHOULD BE COMMENCED AT 5 DME. COMPANY NOTIFIED OF PROGRAMMING ERROR IN NAV SYS.

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.