Narrative:

Inbound from the south of air driven generator airport; IFR flight plan was canceled and toledo approach advised crew to squawk 1200 and that he had seen targets in the vicinity of air driven generator. We switched over to CTAF frequency and announced our position as five miles south of the field making left traffic for runway 5 and entering on crosswind leg. At that time a glider in the pattern for runway 29 announced his position on downwind for runway 29. Visual contact with the glider was made approximately 2 miles south of the airport and both aircraft confirmed they had each other in sight and would remain clear. As our aircraft crossed over the top of the field preparing to enter downwind leg at 2300 MSL. The non-flying pilot made a call over CTAF broadcasting our intentions to enter the downwind leg. At the same time the pilot flying saw another glider just off our left side at our altitude and at approximately 1000 ft distance. Our two aircraft were on a collision course; the flying pilot made an evasive maneuver down and to the right and we missed the aircraft by approximately 200 ft or less. Once clear we made a call to glider asking if they had heard our previous two transmissions and he responded that he had not heard us. We entered the downwind leg and landed uneventfully. Some of our concerns include: 1. The glider was above the airport at 2300 MSL; which is 1500 AGL and made no calls to advise other pilots of his position. 2. The ground crew made no calls to us when we checked in with our position advising us that there were two gliders in the air. 3. The lack of transponders in gliders makes our onboard collision avoidance equipment non-effective. We always fly standard patterns when we approach uncontrolled airports. On this particular day it would have been safer if we had entered on a non-standard right base. We hate to change what we've been doing; but it does concern us.

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Original NASA ASRS Text

Title: A pilot entering the ADG airport traffic pattern in the AIM recommended manner had a near miss with a glider entering the landing pattern in a non-standard manner.

Narrative: Inbound from the south of ADG airport; IFR flight plan was canceled and Toledo Approach advised crew to squawk 1200 and that he had seen targets in the vicinity of ADG. We switched over to CTAF frequency and announced our position as five miles south of the field making left traffic for Runway 5 and entering on crosswind leg. At that time a glider in the pattern for Runway 29 announced his position on downwind for Runway 29. Visual contact with the glider was made approximately 2 miles south of the airport and both aircraft confirmed they had each other in sight and would remain clear. As our aircraft crossed over the top of the field preparing to enter downwind leg at 2300 MSL. The non-flying pilot made a call over CTAF broadcasting our intentions to enter the downwind leg. At the same time the pilot flying saw another glider just off our left side at our altitude and at approximately 1000 FT distance. Our two aircraft were on a collision course; the flying pilot made an evasive maneuver down and to the right and we missed the aircraft by approximately 200 FT or less. Once clear we made a call to glider asking if they had heard our previous two transmissions and he responded that he had not heard us. We entered the downwind leg and landed uneventfully. Some of our concerns include: 1. The glider was above the airport at 2300 MSL; which is 1500 AGL and made no calls to advise other pilots of his position. 2. The ground crew made no calls to us when we checked in with our position advising us that there were two gliders in the air. 3. The lack of transponders in gliders makes our onboard collision avoidance equipment non-effective. We always fly standard patterns when we approach uncontrolled airports. On this particular day it would have been safer if we had entered on a non-standard right base. We hate to change what we've been doing; but it does concern us.

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.