Cleared to annts. First officer programmed aants in error.

Attributes
ACN	163600
Time
Date	199011
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : dxo airport : dtw
State Reference	MI
Altitude	msl bound lower : 3500 msl bound upper : 3500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dtw
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 10000 flight time type : 100
ASRS Report	163600
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Clearance read kdtw dxd DXO217...FWA071 fwa bvt rbs J19 stl.... Departed runway 21R departure heading 230 degree after contacting departure control and climbing through approximately 3000'. We were instructed to turn left proceed direct to annts intersection, a point on the detroit metropolitan 8 departure. Dxd 217/37 DME. This was the first time this point was mentioned. Clearance used the crossing of the 217 off dxo and fwa 071. The first officer and myself idented the point (annts) on the departure and I instructed the first officer to enter it in the FMS and proceed direct to it. He entered the point but entered aants in error. This point instructed a left turn to approximately 160 degree. We questioned departure on the turn and were within a min told to turn back to the right and proceed to the correct point on the 217 degree right (annts). What caused the error was the misspelling of and, complete knowledge of whereabouts of departure points on the SID. Recurrence can be avoided if this point were idented in the clearance. I think most important two points no matter were they are located, under this automated flying concept, should not be called the same and definitely not spelled so similar. Annts point on detroit metropolitan 8 departure. Aants point on low chart #30.

Original NASA ASRS Text

Title: CLEARED TO ANNTS. FO PROGRAMMED AANTS IN ERROR.

Narrative: CLRNC READ KDTW DXD DXO217...FWA071 FWA BVT RBS J19 STL.... DEPARTED RWY 21R DEP HDG 230 DEG AFTER CONTACTING DEP CTL AND CLBING THROUGH APPROX 3000'. WE WERE INSTRUCTED TO TURN L PROCEED DIRECT TO ANNTS INTXN, A POINT ON THE DETROIT METRO 8 DEP. DXD 217/37 DME. THIS WAS THE FIRST TIME THIS POINT WAS MENTIONED. CLRNC USED THE XING OF THE 217 OFF DXO AND FWA 071. THE F/O AND MYSELF IDENTED THE POINT (ANNTS) ON THE DEP AND I INSTRUCTED THE F/O TO ENTER IT IN THE FMS AND PROCEED DIRECT TO IT. HE ENTERED THE POINT BUT ENTERED AANTS IN ERROR. THIS POINT INSTRUCTED A L TURN TO APPROX 160 DEG. WE QUESTIONED DEP ON THE TURN AND WERE WITHIN A MIN TOLD TO TURN BACK TO THE R AND PROCEED TO THE CORRECT POINT ON THE 217 DEG R (ANNTS). WHAT CAUSED THE ERROR WAS THE MISSPELLING OF AND, COMPLETE KNOWLEDGE OF WHEREABOUTS OF DEP POINTS ON THE SID. RECURRENCE CAN BE AVOIDED IF THIS POINT WERE IDENTED IN THE CLRNC. I THINK MOST IMPORTANT TWO POINTS NO MATTER WERE THEY ARE LOCATED, UNDER THIS AUTOMATED FLYING CONCEPT, SHOULD NOT BE CALLED THE SAME AND DEFINITELY NOT SPELLED SO SIMILAR. ANNTS POINT ON DETROIT METRO 8 DEP. AANTS POINT ON LOW CHART #30.

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.