Narrative:

We were departing ksop on runway 5, wind were calm. Made numerous radio calls that our king air was taxiing from the ramp to runway 5, departing runway 5, etc.... Archer made no radio calls. We heard other aircraft in pattern using runway 5. As we were accelerating to V1 the archer came over the hump in the runway. He was using runway 23. I swerved right and aborted the takeoff. We missed by 30 ft. The fact that the ends of the runway are not visible from one another was a major factor in this occurrence. Also, the fact that the archer made no radio calls is the most important factor. The best way to avoid this problem in the future is for recreational flyers to be more professional and proficient in their flying following standard established procedures for operating in non controlled environments. Also, for larger faster aircraft to be more vigilant in their operations looking for the small slower aircraft. Callback conversation with reporter revealed the following information: reporter indicated that the PA28 did not see them until the last minute. It appeared that the instructor pilot was not looking outside the cockpit, but discussing something with the student. Also, the runway 5/23 hump is very dramatic and flight crews need to pay special attention to this.

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Original NASA ASRS Text

Title: B350 ON ITS TKOF ROLL ON RWY 5 AT SOP, ENCOUNTERS A PA28 TAXIING ON THE RWY TOWARDS THEM. B350 SWERVED TO THE R AND ABORTED THE TKOF, MISSING THE PA28 BY 30 FT.

Narrative: WE WERE DEPARTING KSOP ON RWY 5, WIND WERE CALM. MADE NUMEROUS RADIO CALLS THAT OUR KING AIR WAS TAXIING FROM THE RAMP TO RWY 5, DEPARTING RWY 5, ETC.... ARCHER MADE NO RADIO CALLS. WE HEARD OTHER ACFT IN PATTERN USING RWY 5. AS WE WERE ACCELERATING TO V1 THE ARCHER CAME OVER THE HUMP IN THE RWY. HE WAS USING RWY 23. I SWERVED R AND ABORTED THE TKOF. WE MISSED BY 30 FT. THE FACT THAT THE ENDS OF THE RWY ARE NOT VISIBLE FROM ONE ANOTHER WAS A MAJOR FACTOR IN THIS OCCURRENCE. ALSO, THE FACT THAT THE ARCHER MADE NO RADIO CALLS IS THE MOST IMPORTANT FACTOR. THE BEST WAY TO AVOID THIS PROB IN THE FUTURE IS FOR RECREATIONAL FLYERS TO BE MORE PROFESSIONAL AND PROFICIENT IN THEIR FLYING FOLLOWING STANDARD ESTABLISHED PROCS FOR OPERATING IN NON CONTROLLED ENVIRONMENTS. ALSO, FOR LARGER FASTER ACFT TO BE MORE VIGILANT IN THEIR OPS LOOKING FOR THE SMALL SLOWER ACFT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR INDICATED THAT THE PA28 DID NOT SEE THEM UNTIL THE LAST MINUTE. IT APPEARED THAT THE INSTRUCTOR PLT WAS NOT LOOKING OUTSIDE THE COCKPIT, BUT DISCUSSING SOMETHING WITH THE STUDENT. ALSO, THE RWY 5/23 HUMP IS VERY DRAMATIC AND FLT CREWS NEED TO PAY SPECIAL ATTENTION TO THIS.

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.