Potential conflict at a non tower airport.

Attributes
ACN	311627
Time
Date	199507
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : vkx
State Reference	MD
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : den
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff ground : holding ground other : taxi
Flight Plan	None
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	descent : approach landing : go around
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 13 flight time total : 1575 flight time type : 1000
ASRS Report	311627
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac conflict : ground critical incursion : runway non adherence : far non adherence : published procedure other spatial deviation
Independent Detector	other other : unspecified
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Other aircraft was downwind runway 24 at vkx. After my runup, I did a '360 degree' to clear traffic. I could not see other aircraft on downwind. They announced base leg. I announced I was departing still could not see them. As I pulled onto runway, they called final. As I started my takeoff roll, they announced go around and complained I pulled in front of them. Airport is in a valley, low traffic in pattern is hard to see. Runway 24 was in use but winds aloft were from the north. Other aircraft might have used a tighter pattern than normal and had faster ground speed than I expected. In the future, I will make earlier contact if plane has called base (leg).

Original NASA ASRS Text

Title: POTENTIAL CONFLICT AT A NON TWR ARPT.

Narrative: OTHER ACFT WAS DOWNWIND RWY 24 AT VKX. AFTER MY RUNUP, I DID A '360 DEG' TO CLR TFC. I COULD NOT SEE OTHER ACFT ON DOWNWIND. THEY ANNOUNCED BASE LEG. I ANNOUNCED I WAS DEPARTING STILL COULD NOT SEE THEM. AS I PULLED ONTO RWY, THEY CALLED FINAL. AS I STARTED MY TKOF ROLL, THEY ANNOUNCED GAR AND COMPLAINED I PULLED IN FRONT OF THEM. ARPT IS IN A VALLEY, LOW TFC IN PATTERN IS HARD TO SEE. RWY 24 WAS IN USE BUT WINDS ALOFT WERE FROM THE N. OTHER ACFT MIGHT HAVE USED A TIGHTER PATTERN THAN NORMAL AND HAD FASTER GND SPD THAN I EXPECTED. IN THE FUTURE, I WILL MAKE EARLIER CONTACT IF PLANE HAS CALLED BASE (LEG).

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.