Narrative:

The flight started at mkc monday morning jul/91. At about XA20 local. I departed on an IFR flight plan with intended stops at ict, hut, and ddc. After a brief stop at ict. I continued to hut and arrived there at XA00. Freight was exchanged, my IFR clearance was issued, and hut tower cleared me for takeoff. As I started my takeoff roll I did a very stupid thing. I reached over to unlock the gear handle, but instead of just unlocking it, I selected 'gear up' also. As I raised the nose gear at about 70-80 msp the right gear started to retract. I immediately noticed what I had done and selected 'gear down'. Too late. The aircraft dropped onto the runway (35) and by the time I had pulled the power and mixtures and shut the fuel valves, the airplane had slid off the runway (right side) and stopped.

Google
 

Original NASA ASRS Text

Title: TKOF ROLL INADVERTENTLY PUT GEAR CTL IN THE UP POS.

Narrative: THE FLT STARTED AT MKC MONDAY MORNING JUL/91. AT ABOUT XA20 LCL. I DEPARTED ON AN IFR FLT PLAN WITH INTENDED STOPS AT ICT, HUT, AND DDC. AFTER A BRIEF STOP AT ICT. I CONTINUED TO HUT AND ARRIVED THERE AT XA00. FREIGHT WAS EXCHANGED, MY IFR CLRNC WAS ISSUED, AND HUT TWR CLRED ME FOR TKOF. AS I STARTED MY TKOF ROLL I DID A VERY STUPID THING. I REACHED OVER TO UNLOCK THE GEAR HANDLE, BUT INSTEAD OF JUST UNLOCKING IT, I SELECTED 'GEAR UP' ALSO. AS I RAISED THE NOSE GEAR AT ABOUT 70-80 MSP THE R GEAR STARTED TO RETRACT. I IMMEDIATELY NOTICED WHAT I HAD DONE AND SELECTED 'GEAR DOWN'. TOO LATE. THE ACFT DROPPED ONTO THE RWY (35) AND BY THE TIME I HAD PULLED THE PWR AND MIXTURES AND SHUT THE FUEL VALVES, THE AIRPLANE HAD SLID OFF THE RWY (R SIDE) AND STOPPED.

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.