P51 inbound to osh experienced near midair collision with departure at 1200 ft.

Attributes
ACN	602026
Time
Date	200312
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : osh.airport
State Reference	WI
Altitude	agl single value : 1200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : osh.tower
Operator	general aviation : personal
Make Model Name	Mustang (P51)
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	approach : traffic pattern arrival : vfr
Flight Plan	None
Aircraft 2
Controlling Facilities	tower : osh.tower
Make Model Name	Small Aircraft, Low Wing, 2 Eng, Retractable Gear
Flight Phase	climbout : intermediate altitude climbout : takeoff climbout : initial
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 6 flight time total : 4730 flight time type : 1790
ASRS Report	602026
Events
Anomaly	conflict : airborne less severe
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 2500 vertical : 500
Supplementary
Problem Areas	Airspace Structure Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Approaching osh airport, talking to tower from 10 mi out. A twin took off and on climb out, passed 1/2 mi from us. Not even close, too 'close.' but he must have felt it was and said something to tower about being close. No way in our opinion. Talked to tower and they agreed. Proceeded to osh, did a couple fly-bys at pioneer airport and landed at osh. Spoke the next day to osh tower chief and he agreed it was a non-event.

Original NASA ASRS Text

Title: P51 INBOUND TO OSH EXPERIENCED NMAC WITH DEP AT 1200 FT.

Narrative: APCHING OSH ARPT, TALKING TO TWR FROM 10 MI OUT. A TWIN TOOK OFF AND ON CLBOUT, PASSED 1/2 MI FROM US. NOT EVEN CLOSE, TOO 'CLOSE.' BUT HE MUST HAVE FELT IT WAS AND SAID SOMETHING TO TWR ABOUT BEING CLOSE. NO WAY IN OUR OPINION. TALKED TO TWR AND THEY AGREED. PROCEEDED TO OSH, DID A COUPLE FLY-BYS AT PIONEER ARPT AND LANDED AT OSH. SPOKE THE NEXT DAY TO OSH TWR CHIEF AND HE AGREED IT WAS A NON-EVENT.

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.