Pilot of an atx small transport cargo aircraft flew into IMC while VFR resulting in a confliction with another aircraft which had to take evasive action unknown to the reporter.

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Attributes
ACN	364055
Time
Date	199703
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : den
State Reference	CO
Altitude	msl bound lower : 17500 msl bound upper : 17500
Environment
Flight Conditions	Marginal
Light	Night
Aircraft 1
Controlling Facilities	artcc : zdv tracon : den
Operator	common carrier : air taxi
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 135
Flight Phase	cruise other
Flight Plan	None
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 3500 flight time type : 2290
ASRS Report	364055
Person 2
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : airborne less severe inflight encounter : vfr in imc inflight encounter : weather non adherence : far other anomaly other
Independent Detector	other controllera other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Miss Distance	vertical : 3000
Supplementary
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

I was VFR en route to denver from ege. The en route WX was deteriorating so we climbed to stay well above mountains. I had ground contact the entire time but not much forward visibility. When I realized that I was at the altitude of the departure course from den to dbl, I hit the xfer button to listen to den approach, then I heard the controller telling some aircraft that there was an aircraft flying VFR in IMC conditions. So I figured that he was talking about me, so I started an immediate descent to a lower altitude. After listening to ATIS I contacted approach with nothing else happening. After landing I was given ZDV phone number. I called and was informed that there was an near midair collision and the other aircraft had to take evasive action to avoid me. The controller told me that he started pointing me at 8 mi and finally at 1 the other aircraft told him there was no way I was VFR because he could not see me. I said well I did not see him but I had all my lights on. The controller said he got within 1/2 mi.

Original NASA ASRS Text

Title: PLT OF AN ATX SMT CARGO ACFT FLEW INTO IMC WHILE VFR RESULTING IN A CONFLICTION WITH ANOTHER ACFT WHICH HAD TO TAKE EVASIVE ACTION UNKNOWN TO THE RPTR.

Narrative: I WAS VFR ENRTE TO DENVER FROM EGE. THE ENRTE WX WAS DETERIORATING SO WE CLBED TO STAY WELL ABOVE MOUNTAINS. I HAD GND CONTACT THE ENTIRE TIME BUT NOT MUCH FORWARD VISIBILITY. WHEN I REALIZED THAT I WAS AT THE ALT OF THE DEP COURSE FROM DEN TO DBL, I HIT THE XFER BUTTON TO LISTEN TO DEN APCH, THEN I HEARD THE CTLR TELLING SOME ACFT THAT THERE WAS AN ACFT FLYING VFR IN IMC CONDITIONS. SO I FIGURED THAT HE WAS TALKING ABOUT ME, SO I STARTED AN IMMEDIATE DSCNT TO A LOWER ALT. AFTER LISTENING TO ATIS I CONTACTED APCH WITH NOTHING ELSE HAPPENING. AFTER LNDG I WAS GIVEN ZDV PHONE NUMBER. I CALLED AND WAS INFORMED THAT THERE WAS AN NMAC AND THE OTHER ACFT HAD TO TAKE EVASIVE ACTION TO AVOID ME. THE CTLR TOLD ME THAT HE STARTED POINTING ME AT 8 MI AND FINALLY AT 1 THE OTHER ACFT TOLD HIM THERE WAS NO WAY I WAS VFR BECAUSE HE COULD NOT SEE ME. I SAID WELL I DID NOT SEE HIM BUT I HAD ALL MY LIGHTS ON. THE CTLR SAID HE GOT WITHIN 1/2 MI.

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.