Reporter encounters near midair collision during arrival at uncontrolled airport.

Attributes
ACN	317118
Time
Date	199510
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : oxc
State Reference	CT
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 91
Flight Phase	descent other
Route In Use	enroute other
Flight Plan	VFR
Aircraft 2
Make Model Name	Beechcraft Single Piston Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	descent other
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 2600 flight time type : 90
ASRS Report	317118
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : nmac non adherence : far other anomaly other
Independent Detector	other other : unspecified cockpit
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 500 vertical : 400
Supplementary
Primary Problem	Flight Crew Human Performance
Situations
Airport	procedure or policy : unspecified

Narrative:

We were level at 12500 ft 30 mi east of oxc speaking with ZBW. We advised them we were starting our descent for oxc and that we had the AWOS. 14 mi east of oxc ZBW advised we were leaving their airspace, to squawk 1200, and no traffic was in proximity to us. We then went to unicom for advisories, and to notify traffic of our intentions. 10 mi east of the field we had made a radio call advising traffic of our position, altitude and destination. At that point was when we encountered a beech bonanza approximately 400 ft below us and approximately 500 ft horizontal distance from our position. The PF, moments prior, had stopped the descent when we visually saw the other aircraft. At this point in the flight the other aircraft had made no radio calls and made no effort to see and avoid any traffic in the vicinity of oxc. I feel that this is an arising problem at uncontrolled fields and that some type of resolution should be considered to the effect that control towers or some other type of control capabilities be designated at busy uncontrolled fields.

Original NASA ASRS Text

Title: RPTR ENCOUNTERS NMAC DURING ARR AT UNCTLED ARPT.

Narrative: WE WERE LEVEL AT 12500 FT 30 MI E OF OXC SPEAKING WITH ZBW. WE ADVISED THEM WE WERE STARTING OUR DSCNT FOR OXC AND THAT WE HAD THE AWOS. 14 MI E OF OXC ZBW ADVISED WE WERE LEAVING THEIR AIRSPACE, TO SQUAWK 1200, AND NO TFC WAS IN PROX TO US. WE THEN WENT TO UNICOM FOR ADVISORIES, AND TO NOTIFY TFC OF OUR INTENTIONS. 10 MI E OF THE FIELD WE HAD MADE A RADIO CALL ADVISING TFC OF OUR POS, ALT AND DEST. AT THAT POINT WAS WHEN WE ENCOUNTERED A BEECH BONANZA APPROX 400 FT BELOW US AND APPROX 500 FT HORIZ DISTANCE FROM OUR POS. THE PF, MOMENTS PRIOR, HAD STOPPED THE DSCNT WHEN WE VISUALLY SAW THE OTHER ACFT. AT THIS POINT IN THE FLT THE OTHER ACFT HAD MADE NO RADIO CALLS AND MADE NO EFFORT TO SEE AND AVOID ANY TFC IN THE VICINITY OF OXC. I FEEL THAT THIS IS AN ARISING PROB AT UNCTLED FIELDS AND THAT SOME TYPE OF RESOLUTION SHOULD BE CONSIDERED TO THE EFFECT THAT CTL TWRS OR SOME OTHER TYPE OF CTL CAPABILITIES BE DESIGNATED AT BUSY UNCTLED FIELDS.

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.