An air carrier medium large transport experiences a heading track position deviation when the captain pushes the wrong button on the GPS navigation system. ATC gets them on track.

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Attributes
ACN	417260
Time
Date	199810
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : vxn
State Reference	TN
Altitude	msl bound lower : 33000 msl bound upper : 33000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute airway : ztl
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : commercial pilot : instrument pilot : atp
Experience	flight time last 90 days : 120 flight time total : 12000 flight time type : 7000
ASRS Report	417260
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	non adherence : clearance non adherence other other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Over vxv, noticed notwo intersection came up in GPS. I knew we were filed over J46 to athens. Asked for direct alma (amg -- also on flight plan). Controller queried our routing, gave us left turn to reintercept, and reclred direct alma (amg). I checked waypoints on ground (not sure how notwo got in GPS), rechked GPS waypoint in-flight all correct. Must have made or accidently pushed (nrst) nearest waypoint button on box. Caught it only because vors were on correct fix. No traffic conflict arose, however, center said another 5 mins we would have.

Original NASA ASRS Text

Title: AN ACR MLG EXPERIENCES A HDG TRACK POS DEV WHEN THE CAPT PUSHES THE WRONG BUTTON ON THE GPS NAV SYS. ATC GETS THEM ON TRACK.

Narrative: OVER VXV, NOTICED NOTWO INTXN CAME UP IN GPS. I KNEW WE WERE FILED OVER J46 TO ATHENS. ASKED FOR DIRECT ALMA (AMG -- ALSO ON FLT PLAN). CTLR QUERIED OUR ROUTING, GAVE US L TURN TO REINTERCEPT, AND RECLRED DIRECT ALMA (AMG). I CHKED WAYPOINTS ON GND (NOT SURE HOW NOTWO GOT IN GPS), RECHKED GPS WAYPOINT INFLT ALL CORRECT. MUST HAVE MADE OR ACCIDENTLY PUSHED (NRST) NEAREST WAYPOINT BUTTON ON BOX. CAUGHT IT ONLY BECAUSE VORS WERE ON CORRECT FIX. NO TFC CONFLICT AROSE, HOWEVER, CTR SAID ANOTHER 5 MINS WE WOULD HAVE.

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.