C152 pilot has near midair collision during departure.

Attributes
ACN	557410
Time
Date	200208
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : hyr.airport
State Reference	WI
Altitude	agl single value : 800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Cessna 152
Operating Under FAR Part	Part 91
Flight Phase	climbout : initial
Route In Use	approach : traffic pattern
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Baron 58/58TC
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Flight Plan	VFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : multi engine pilot : cfi pilot : instrument
Experience	flight time last 90 days : 80 flight time total : 1525 flight time type : 200
ASRS Report	557410
Person 2
Affiliation	other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac non adherence : published procedure other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Miss Distance	horizontal : 300 vertical : 400
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The wind was from the south at 3-5 KTS. Several aircraft had departed on runway 20 prior to the time I started my aircraft. I announced back taxi for runway 20 on the CTAF. While doing my run-up, a baron called 7 mi out for runway 2. The airport manager replied with winds, altimeter, and advised the baron pilot that aircraft were using runway 20. The baron pilot acknowledged. I finished my run-up and scanned the approachs for both runways (2 and 20) looking for traffic. No traffic was observed. The baron pilot reported downwind to base for runway 20. I did not see the baron, but this is not unusual since twins and jets often fly wide patterns and are not always visible from the end of the runway due to trees. Based on the baron pilot's report and not seeing any aircraft, I announced departing runway 20. While climbing out, I heard the baron make another announcement. His announcement was somewhat confusing and I do not recall the details. About that time, I looked below and to the right of my aircraft and saw the baron pass beneath me on final approach for runway 2. (I was flying right seat. If I had been in the left seat I never would have seen the baron.) I was about 800 ft AGL and estimate the baron was about 400 ft AGL. I was disturbed by the situation and made several comments to the baron pilot over the CTAF expressing my displeasure with his traffic pattern/position reports. I really hope that this individual saw me and was aware of my flight path because I had no clue where he was until he passed below me due to the inaccuracy of his position reports.

Original NASA ASRS Text

Title: C152 PLT HAS NMAC DURING DEP.

Narrative: THE WIND WAS FROM THE S AT 3-5 KTS. SEVERAL ACFT HAD DEPARTED ON RWY 20 PRIOR TO THE TIME I STARTED MY ACFT. I ANNOUNCED BACK TAXI FOR RWY 20 ON THE CTAF. WHILE DOING MY RUN-UP, A BARON CALLED 7 MI OUT FOR RWY 2. THE ARPT MGR REPLIED WITH WINDS, ALTIMETER, AND ADVISED THE BARON PLT THAT ACFT WERE USING RWY 20. THE BARON PLT ACKNOWLEDGED. I FINISHED MY RUN-UP AND SCANNED THE APCHS FOR BOTH RWYS (2 AND 20) LOOKING FOR TFC. NO TFC WAS OBSERVED. THE BARON PLT RPTED DOWNWIND TO BASE FOR RWY 20. I DID NOT SEE THE BARON, BUT THIS IS NOT UNUSUAL SINCE TWINS AND JETS OFTEN FLY WIDE PATTERNS AND ARE NOT ALWAYS VISIBLE FROM THE END OF THE RWY DUE TO TREES. BASED ON THE BARON PLT'S RPT AND NOT SEEING ANY ACFT, I ANNOUNCED DEPARTING RWY 20. WHILE CLBING OUT, I HEARD THE BARON MAKE ANOTHER ANNOUNCEMENT. HIS ANNOUNCEMENT WAS SOMEWHAT CONFUSING AND I DO NOT RECALL THE DETAILS. ABOUT THAT TIME, I LOOKED BELOW AND TO THE R OF MY ACFT AND SAW THE BARON PASS BENEATH ME ON FINAL APCH FOR RWY 2. (I WAS FLYING R SEAT. IF I HAD BEEN IN THE L SEAT I NEVER WOULD HAVE SEEN THE BARON.) I WAS ABOUT 800 FT AGL AND ESTIMATE THE BARON WAS ABOUT 400 FT AGL. I WAS DISTURBED BY THE SIT AND MADE SEVERAL COMMENTS TO THE BARON PLT OVER THE CTAF EXPRESSING MY DISPLEASURE WITH HIS TFC PATTERN/POS RPTS. I REALLY HOPE THAT THIS INDIVIDUAL SAW ME AND WAS AWARE OF MY FLT PATH BECAUSE I HAD NO CLUE WHERE HE WAS UNTIL HE PASSED BELOW ME DUE TO THE INACCURACY OF HIS POS RPTS.

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.