A beechcraft 35 pilot had to abort his takeoff at a non-towered airport when another aircraft began ...

Narrative:

I was departing a non-towered airport. Having announced my intent on the CTAF to enter runway 31 for a departure; I taxied into position and did a short final check. I ran up the engine; released the brakes and began a takeoff roll. While accelerating at full power I heard a transmission that an airplane intended to enter runway 13 for departure. I could see a yellow airplane in the run-up area for 13; and immediately radioed that I was on takeoff on 31. The yellow airplane taxied onto the runway and I radioed again; but he kept coming; so I immediately aborted the takeoff. I estimate that I was at around 50 KTS at the time. I managed to slow the aircraft enough to get off the runway at the mid-field taxiway. The yellow aircraft continued the takeoff roll and made a steep climbing turn to the left; which appeared to be an evasive maneuver. A C172 was on base to runway 31 when I aborted and the yellow airplane was climbing out. That pilot transmitted concern that there was someone taking off the opposite direction. A radio transmission; which I believe came from the yellow airplane; was something like 'traffic not a factor.' the cause of the incident was the yellow airplane choosing to depart in the opposite direction of traffic using the single runway; in failing to monitor or hear or heed my transmissions; and in taxiing onto and departing on a runway in use despite repeated warnings on the radio. Had the incursion happened only a few seconds later the outcome might have been very different.

Original NASA ASRS Text

Title: A Beechcraft 35 pilot had to abort his takeoff at a non-towered airport when another aircraft began a takeoff from the opposite end of the same runway despite repeated CTAF declarations and warnings.

Narrative: I was departing a non-towered airport. Having announced my intent on the CTAF to enter Runway 31 for a departure; I taxied into position and did a short final check. I ran up the engine; released the brakes and began a takeoff roll. While accelerating at full power I heard a transmission that an airplane intended to enter Runway 13 for departure. I could see a yellow airplane in the run-up area for 13; and immediately radioed that I was on takeoff on 31. The yellow airplane taxied onto the runway and I radioed again; but he kept coming; so I immediately aborted the takeoff. I estimate that I was at around 50 KTS at the time. I managed to slow the aircraft enough to get off the runway at the mid-field taxiway. The yellow aircraft continued the takeoff roll and made a steep climbing turn to the left; which appeared to be an evasive maneuver. A C172 was on base to Runway 31 when I aborted and the yellow airplane was climbing out. That pilot transmitted concern that there was someone taking off the opposite direction. A radio transmission; which I believe came from the yellow airplane; was something like 'traffic not a factor.' The cause of the incident was the yellow airplane choosing to depart in the opposite direction of traffic using the single runway; in failing to monitor or hear or heed my transmissions; and in taxiing onto and departing on a runway in use despite repeated warnings on the radio. Had the incursion happened only a few seconds later the outcome might have been very different.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	838141
Time
Date	200905
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Bonanza 35
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Flight Plan	IFR
Aircraft 2
Make Model Name	Experimental
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Instrument Flight Crew Private
Experience	Flight Crew Total 850 Flight Crew Type 500
Events
Anomaly	Conflict Ground Conflict Critical
Miss Distance	Horizontal 500 Vertical 0

A beechcraft 35 pilot had to abort his takeoff at a non-towered airport when another aircraft began a takeoff from the opposite end of the same runway despite repeated CTAF declarations and warnings.