A VFR aircraft southeast of airport was instructed to circumnav south of the airport and enter right downwind for runway 16R. The reporter pilot crossed 2 mi south of the airport at 1200 ft and was involved in an near midair collision with another aircraft off the departure end of the runway.

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Attributes
ACN	414433
Time
Date	199809
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : hef
State Reference	VA
Altitude	msl bound lower : 1200 msl bound upper : 1200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : hef
Operator	general aviation : instructional
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	VFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : initial
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 40 flight time total : 185 flight time type : 185
ASRS Report	414433
Person 2
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac non adherence : far
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Told the tower I was 10 mi southeast of the field. Tower instructed me to circumnav the field to the south and report a 2 mi right downwind for runway 16R. Tower asked me where I was at and I stated that I was 2 mi south of the field, when another aircraft on the upwind reported that I was close to 500 ft from hitting them. Tower could have given me a left downwind for the same runway instead of me circumnaving across the upwind traffic. I never saw the upwind traffic and tower never gave information about the other aircraft.

Original NASA ASRS Text

Title: A VFR ACFT SE OF ARPT WAS INSTRUCTED TO CIRCUMNAV S OF THE ARPT AND ENTER R DOWNWIND FOR RWY 16R. THE RPTR PLT CROSSED 2 MI S OF THE ARPT AT 1200 FT AND WAS INVOLVED IN AN NMAC WITH ANOTHER ACFT OFF THE DEP END OF THE RWY.

Narrative: TOLD THE TWR I WAS 10 MI SE OF THE FIELD. TWR INSTRUCTED ME TO CIRCUMNAV THE FIELD TO THE S AND RPT A 2 MI R DOWNWIND FOR RWY 16R. TWR ASKED ME WHERE I WAS AT AND I STATED THAT I WAS 2 MI S OF THE FIELD, WHEN ANOTHER ACFT ON THE UPWIND RPTED THAT I WAS CLOSE TO 500 FT FROM HITTING THEM. TWR COULD HAVE GIVEN ME A L DOWNWIND FOR THE SAME RWY INSTEAD OF ME CIRCUMNAVING ACROSS THE UPWIND TFC. I NEVER SAW THE UPWIND TFC AND TWR NEVER GAVE INFO ABOUT THE OTHER ACFT.

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.