A PA-30 pilot took evasive action to avoid a near miss with unannounced traffic at a non-towered air...

Attributes
ACN	952298
Time
Date	201106
Local Time Of Day	0601-1200
Place
Locale Reference	GKT.Airport
State Reference	TN
Aircraft 1
Make Model Name	PA-30 Twin Comanche
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	Direct
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Multiengine Flight Crew Rotorcraft Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Engineer Flight Crew Instrument
Experience	Flight Crew Last 90 Days 200 Flight Crew Total 15000 Flight Crew Type 550
Events
Anomaly	Conflict NMAC Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 20 Vertical 30

Narrative:

I canceled flight following with approach and was notified of traffic at gkt; my destination. Previous calls to gkt unicom were made at twenty; eight and three miles to airport. Two miles south; I informed traffic that I would enter pattern on 45 degree entry to left downwind for runway 28. Descending between 2;000 and 1;800 AGL on a 45 degree angle to downwind I saw an aircraft in the left wind screen approximately 250 ft in front and twenty feet higher. I initiated an abrupt dive and flew under other aircraft. I continued descent to 1;200 AGL and completed a right 360 degree turn to reenter downwind to runway 28. I broadcast the near miss information on unicom. The other aircraft did not take evasive action or identify itself. It appeared to be a composite low wing single.

Original NASA ASRS Text

Title: A PA-30 pilot took evasive action to avoid a near miss with unannounced traffic at a non-towered airport.

Narrative: I canceled flight following with approach and was notified of traffic at GKT; my destination. Previous calls to GKT UNICOM were made at twenty; eight and three miles to airport. Two miles south; I informed traffic that I would enter pattern on 45 degree entry to left downwind for Runway 28. Descending between 2;000 and 1;800 AGL on a 45 degree angle to downwind I saw an aircraft in the left wind screen approximately 250 FT in front and twenty feet higher. I initiated an abrupt dive and flew under other aircraft. I continued descent to 1;200 AGL and completed a right 360 degree turn to reenter downwind to Runway 28. I broadcast the near miss information on UNICOM. The other aircraft did not take evasive action or identify itself. It appeared to be a composite low wing single.

Data retrieved from NASA's ASRS site as of April 2012 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.