C150 and PA60 have close encounter of the head on kind while departing from uncontrolled airport from opposite ends of the same runway. Pilot of PA60 apparently did not announce his takeoff intentions on CTAF.

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Attributes
ACN	591241
Time
Date	200308
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : jwn.airport
State Reference	TN
Altitude	agl bound lower : 0 agl bound upper : 100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Cessna 150
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff ground : takeoff roll
Flight Plan	None
Aircraft 2
Make Model Name	PA-60 600 Aerostar
Flight Phase	climbout : takeoff ground : takeoff roll
Route In Use	departure : vfr
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Experience	flight time last 90 days : 6 flight time total : 1432 flight time type : 485
ASRS Report	591241
Person 2
Function	flight crew : single pilot
Events
Anomaly	conflict : airborne critical non adherence : published procedure other spatial deviation
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action
Supplementary
Problem Areas	Flight Crew Human Performance Environmental Factor Airport
Primary Problem	Flight Crew Human Performance

Narrative:

Pilot of aircraft #1 announced intention to take off from runway 1 at jwn, using unicom frequency. Wind was not a factor (perhaps a very slight crosswind). No ground traffic or other radio xmissions were noted. Due to a hump at north end of runway, other aircraft was not seen until liftoff. Both planes were seen by both pilots, and each deviated to the right. There was no collision potential.

Original NASA ASRS Text

Title: C150 AND PA60 HAVE CLOSE ENCOUNTER OF THE HEAD ON KIND WHILE DEPARTING FROM UNCTLED ARPT FROM OPPOSITE ENDS OF THE SAME RWY. PLT OF PA60 APPARENTLY DID NOT ANNOUNCE HIS TKOF INTENTIONS ON CTAF.

Narrative: PLT OF ACFT #1 ANNOUNCED INTENTION TO TAKE OFF FROM RWY 1 AT JWN, USING UNICOM FREQ. WIND WAS NOT A FACTOR (PERHAPS A VERY SLIGHT XWIND). NO GND TFC OR OTHER RADIO XMISSIONS WERE NOTED. DUE TO A HUMP AT N END OF RWY, OTHER ACFT WAS NOT SEEN UNTIL LIFTOFF. BOTH PLANES WERE SEEN BY BOTH PLTS, AND EACH DEVIATED TO THE R. THERE WAS NO COLLISION POTENTIAL.

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.