CL65 flight crew fly the wrong heading out of iiu VOR while on FMS. The database had a known error but the flight crew passed over the flight release warning of same with a short and erred assessment.

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Attributes
ACN	365690
Time
Date	199704
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : iiu
State Reference	KY
Altitude	msl bound lower : 23000 msl bound upper : 23000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid
Operator	common carrier : air carrier
Make Model Name	Challenger CL604
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 285 flight time total : 6250 flight time type : 680
ASRS Report	365690
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance non adherence other other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation other

Narrative:

FMS canned flight plan waypoint grnin intersection was incorrectly spelled grinn in FMS update. FMS plotted the misspelled waypoint 260 degrees from iiu VOR. The correct heading after iiu for grnin is 195 degrees. FMS commanded the turn to 260 degrees. This was flown for about 10 mi (80 seconds) unknown to flight crew. ATC advised us of the deviation and corrected our heading on course. We were not advised of any separation problem. The flight release did include an advisory stating the problem with the misspelled waypoint. The waypoint was reviewed by the captain prior to the flight. He saw no problem with the waypoint in question. I was rushed in my preflight duties and was unable to review the route myself. Factors that led to the deviation: 1) small errors in spelling are difficult to detect when the letter 'I' is moved -- grnin versus grinn. 2) the flight crew's inattn on the ground and in the air. 3) the flight crew's complacency with the FMS's ability to navigation. Takes flight crew out of the navigation loop to a certain degree.

Original NASA ASRS Text

Title: CL65 FLC FLY THE WRONG HDG OUT OF IIU VOR WHILE ON FMS. THE DATABASE HAD A KNOWN ERROR BUT THE FLC PASSED OVER THE FLT RELEASE WARNING OF SAME WITH A SHORT AND ERRED ASSESSMENT.

Narrative: FMS CANNED FLT PLAN WAYPOINT GRNIN INTXN WAS INCORRECTLY SPELLED GRINN IN FMS UPDATE. FMS PLOTTED THE MISSPELLED WAYPOINT 260 DEGS FROM IIU VOR. THE CORRECT HDG AFTER IIU FOR GRNIN IS 195 DEGS. FMS COMMANDED THE TURN TO 260 DEGS. THIS WAS FLOWN FOR ABOUT 10 MI (80 SECONDS) UNKNOWN TO FLC. ATC ADVISED US OF THE DEV AND CORRECTED OUR HDG ON COURSE. WE WERE NOT ADVISED OF ANY SEPARATION PROB. THE FLT RELEASE DID INCLUDE AN ADVISORY STATING THE PROB WITH THE MISSPELLED WAYPOINT. THE WAYPOINT WAS REVIEWED BY THE CAPT PRIOR TO THE FLT. HE SAW NO PROB WITH THE WAYPOINT IN QUESTION. I WAS RUSHED IN MY PREFLT DUTIES AND WAS UNABLE TO REVIEW THE RTE MYSELF. FACTORS THAT LED TO THE DEV: 1) SMALL ERRORS IN SPELLING ARE DIFFICULT TO DETECT WHEN THE LETTER 'I' IS MOVED -- GRNIN VERSUS GRINN. 2) THE FLC'S INATTN ON THE GND AND IN THE AIR. 3) THE FLC'S COMPLACENCY WITH THE FMS'S ABILITY TO NAV. TAKES FLC OUT OF THE NAV LOOP TO A CERTAIN DEGREE.

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.