Small aircraft X had conflict with C152 while entering traffic pattern. See and avoid concept.

Attributes
ACN	309836
Time
Date	199507
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : hef
State Reference	VA
Altitude	agl bound lower : 1000 agl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : hef
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	descent : approach other
Flight Plan	VFR
Aircraft 2
Make Model Name	Cessna 152
Operating Under FAR Part	Part 91
Flight Phase	descent : approach other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp
ASRS Report	309836
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : airborne less severe
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 1500 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

Small aircraft X called hef tower about 6 mi northwest at local defined reporting point. Instructed to enter left downwind for runway 34L. Couple mins later, cessna 152 called in for landing instructions. Also told to enter left downwind for runway 34L. Spotted the cessna slightly below, and to our right some distance away (1/4 - 1/2 mi). Couldn't make out any detail on cessna. Know it was a C152 because recognized call sign. Traffic (us) was called to the C152 and the C152 pilot complained we had passed him entering the pattern. Local instructed C152 to follow us and that he was #2. The C152 was unaware of our presence, and had not heard our initial call for landing. He seemed to think we should have followed him, which would not have been practical. If we had broken off to the right we would have tangled with another aircraft which was entering same distance back (based on that aircraft's callup and position report).

Original NASA ASRS Text

Title: SMA X HAD CONFLICT WITH C152 WHILE ENTERING TFC PATTERN. SEE AND AVOID CONCEPT.

Narrative: SMA X CALLED HEF TWR ABOUT 6 MI NW AT LCL DEFINED RPTING POINT. INSTRUCTED TO ENTER L DOWNWIND FOR RWY 34L. COUPLE MINS LATER, CESSNA 152 CALLED IN FOR LNDG INSTRUCTIONS. ALSO TOLD TO ENTER L DOWNWIND FOR RWY 34L. SPOTTED THE CESSNA SLIGHTLY BELOW, AND TO OUR R SOME DISTANCE AWAY (1/4 - 1/2 MI). COULDN'T MAKE OUT ANY DETAIL ON CESSNA. KNOW IT WAS A C152 BECAUSE RECOGNIZED CALL SIGN. TFC (US) WAS CALLED TO THE C152 AND THE C152 PLT COMPLAINED WE HAD PASSED HIM ENTERING THE PATTERN. LCL INSTRUCTED C152 TO FOLLOW US AND THAT HE WAS #2. THE C152 WAS UNAWARE OF OUR PRESENCE, AND HAD NOT HEARD OUR INITIAL CALL FOR LNDG. HE SEEMED TO THINK WE SHOULD HAVE FOLLOWED HIM, WHICH WOULD NOT HAVE BEEN PRACTICAL. IF WE HAD BROKEN OFF TO THE R WE WOULD HAVE TANGLED WITH ANOTHER ACFT WHICH WAS ENTERING SAME DISTANCE BACK (BASED ON THAT ACFT'S CALLUP AND POS RPT).

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.