Helicopter pilot encounters near midair collision with military helicopter.

Attributes
ACN	437100
Time
Date	199905
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : onp.airport
State Reference	OR
Altitude	msl single value : 300
Environment
Flight Conditions	IMC
Weather Elements	Rain
Light	Daylight
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Iroquois 205 (Huey)
Navigation In Use	other
Flight Plan	VFR
Aircraft 2
Operator	other
Make Model Name	SA 365 Dauphin 2
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	VFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Experience	flight time last 90 days : 162 flight time total : 9205 flight time type : 272
ASRS Report	437100
Person 2
Affiliation	government : military
Function	flight crew : single pilot
Qualification	pilot : military
Events
Anomaly	inflight encounter : weather non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	other
Miss Distance	horizontal : 300 vertical : 50
Supplementary
Problem Areas	Weather Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

On an afternoon in may, at approximately 4 NM south of onp airport, I was flying a bell UH1H. The WX at the shoreline was 300 ft indefinite and 3/4 to a mi visibility. I saw what appeared to be a military dauphin approaching. He had previously called 7 mi to the south of onp on a special VFR to onp. I had determined my position to be just outside the class east and was about to call when I saw the aircraft. I diverted my course to the right. The military helicopter executed a climbing left turn and I turned left to avoid. Our separation on passing was about 300 ft horizontal and 50 ft vertical. I called on 123.025 and later on 122.8 but received no response. I landed at the next airport south at florence. A call came in as I was refueling the helicopter. The pilot of the military helicopter and I discussed the situation. I called the chief pilot of my company, and secured the aircraft for the day in the worsening WX.

Original NASA ASRS Text

Title: HELI PLT ENCOUNTERS NMAC WITH MIL HELI.

Narrative: ON AN AFTERNOON IN MAY, AT APPROX 4 NM S OF ONP ARPT, I WAS FLYING A BELL UH1H. THE WX AT THE SHORELINE WAS 300 FT INDEFINITE AND 3/4 TO A MI VISIBILITY. I SAW WHAT APPEARED TO BE A MIL DAUPHIN APCHING. HE HAD PREVIOUSLY CALLED 7 MI TO THE S OF ONP ON A SPECIAL VFR TO ONP. I HAD DETERMINED MY POS TO BE JUST OUTSIDE THE CLASS E AND WAS ABOUT TO CALL WHEN I SAW THE ACFT. I DIVERTED MY COURSE TO THE R. THE MIL HELI EXECUTED A CLBING L TURN AND I TURNED L TO AVOID. OUR SEPARATION ON PASSING WAS ABOUT 300 FT HORIZ AND 50 FT VERT. I CALLED ON 123.025 AND LATER ON 122.8 BUT RECEIVED NO RESPONSE. I LANDED AT THE NEXT ARPT S AT FLORENCE. A CALL CAME IN AS I WAS REFUELING THE HELI. THE PLT OF THE MIL HELI AND I DISCUSSED THE SIT. I CALLED THE CHIEF PLT OF MY COMPANY, AND SECURED THE ACFT FOR THE DAY IN THE WORSENING WX.

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.