Narrative:

I called amarillo ground and told them I was VFR to liberal requesting 4500 ft and I had the ATIS. He told me to taxi to runway 4. Then I asked if intersection B would be ok and he said it would. Another aircraft was taking off on runway 22. Then tower cleared me to depart runway 4. As the traffic flew past I taxied on the runway and followed the traffic. The problem was I was cleared to takeoff on runway 4 and instinctively followed the traffic taking off on runway 22. After taking off I realized what I did and told the tower what I did and they told me to contact departure. My corrective action would be to use all the runway available as to eliminate the possibility of departing in the wrong direction.

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Original NASA ASRS Text

Title: PLT OF AN SMA ACFT INADVERTENTLY TOOK OFF ON THE WRONG RWY WHEN TAKING OFF IN THE WRONG DIRECTION ON THE RWY FOLLOWING ANOTHER ACFT.

Narrative: I CALLED AMARILLO GND AND TOLD THEM I WAS VFR TO LIBERAL REQUESTING 4500 FT AND I HAD THE ATIS. HE TOLD ME TO TAXI TO RWY 4. THEN I ASKED IF INTXN B WOULD BE OK AND HE SAID IT WOULD. ANOTHER ACFT WAS TAKING OFF ON RWY 22. THEN TWR CLRED ME TO DEPART RWY 4. AS THE TFC FLEW PAST I TAXIED ON THE RWY AND FOLLOWED THE TFC. THE PROB WAS I WAS CLRED TO TKOF ON RWY 4 AND INSTINCTIVELY FOLLOWED THE TFC TAKING OFF ON RWY 22. AFTER TAKING OFF I REALIZED WHAT I DID AND TOLD THE TWR WHAT I DID AND THEY TOLD ME TO CONTACT DEP. MY CORRECTIVE ACTION WOULD BE TO USE ALL THE RWY AVAILABLE AS TO ELIMINATE THE POSSIBILITY OF DEPARTING IN THE WRONG DIRECTION.

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.