BE58 pilot reported a near midair collision during approach to a non-towered airport.

Narrative:

I was piloting a beech baron with intentions to land at ZZZ. There was at least two cessna 172 aircraft in the pattern. I made my initial call out 2-3 miles out 'baron 2 miles east of the field will be overflying at 2;000; and entering a 45 for a left downwind.' one of the two cessna was departing and the other was on downwind. The aircraft departing radios faded in and out and made a crackly sound. [He] asked me my position (audible); and I told him that I was over the [airport at approximately] 2;000 feet and told him I have negative visual contact with him. He never said he had visual contact with my aircraft. I continued and called out twin beech entering a 45 for a left downwind. As I made my 45 I noticed the cessna in front of me just about to turn his base; I never saw the other cessna and I assumed he was upwind or crosswind. And he never said he made visual contact with me until I entered my downwind. If he had made a position report maybe it was inaudible. I called out twin beech entering left downwind. Shortly after I announced my position the cessna behind me (audible) said I was by there estimate 100 feet away from them. I told them I still had negative contact. When I entered downwind I was at approximately 1;200 to 1;300 feet. I spoke to the pilot on the ground and he said if he deviated it was only slight if anything at all.

Original NASA ASRS Text

Title: BE58 pilot reported a near midair collision during approach to a non-towered airport.

Narrative: I was piloting a Beech Baron with intentions to land at ZZZ. There was at least two Cessna 172 aircraft in the pattern. I made my initial call out 2-3 miles out 'Baron 2 miles east of the field will be overflying at 2;000; and entering a 45 for a left downwind.' One of the two Cessna was departing and the other was on downwind. The aircraft departing radios faded in and out and made a crackly sound. [He] asked me my position (Audible); and I told him that I was over the [airport at approximately] 2;000 feet and told him I have negative visual contact with him. He never said he had visual contact with my aircraft. I continued and called out twin Beech entering a 45 for a left downwind. As I made my 45 I noticed the Cessna in front of me just about to turn his base; I never saw the other Cessna and I assumed he was upwind or crosswind. And he never said he made visual contact with me until I entered my downwind. If he had made a position report maybe it was inaudible. I called out twin beech entering left downwind. Shortly after I announced my position the Cessna behind me (audible) said I was by there estimate 100 feet away from them. I told them I still had negative contact. When I entered downwind I was at approximately 1;200 to 1;300 feet. I spoke to the pilot on the ground and he said if he deviated it was only slight if anything at all.

Data retrieved from NASA's ASRS site 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.

Attributes
ACN	1542145
Time
Date	201805
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Baron 58/58TC
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Route In Use	Visual Approach
Flight Plan	VFR
Person 1
Function	Single Pilot Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Commercial
Experience	Flight Crew Last 90 Days 11.7 Flight Crew Total 1000 Flight Crew Type 150
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 200 Vertical 500