Narrative:

The glider club that operates from ZZZ has poor operations procedures which often treat the runway like their personal parking lot making operations by others difficult. Today they had a sgs 2-33 on the right side of runway xx on the runway side of the cones. The student is a new owner with only about 100 hrs so the maule is bit demanding for him. I had him setting approach flaps abeam and going to full flaps on short final. With the glider in the way we planned steep approach over the glider which worked fine for the first one. On the second attempt the student set the flaps [but] failed to lock them so shortly after removing his hand the flaps retracted giving us a extreme high rate of sink. I took control and powered out of it but got dangerously close to the parked glider. Had the glider not been there and we failed to arrest sink the worst that would have happened would be a very firm landing but with the glider we came very close to impacting it.

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Original NASA ASRS Text

Title: Maule M7 Flight Instructor reported a ground conflict due to unsafe operations by a local glider club.

Narrative: The glider club that operates from ZZZ has poor operations procedures which often treat the runway like their personal parking lot making operations by others difficult. Today they had a SGS 2-33 on the right side of RWY XX on the runway side of the cones. The student is a new owner with only about 100 hrs so the Maule is bit demanding for him. I had him setting approach flaps abeam and going to full flaps on short final. With the glider in the way we planned steep approach over the glider which worked fine for the first one. On the second attempt the student set the flaps [but] failed to lock them so shortly after removing his hand the flaps retracted giving us a extreme high rate of sink. I took control and powered out of it but got dangerously close to the parked glider. Had the glider not been there and we failed to arrest sink the worst that would have happened would be a VERY FIRM LANDING but with the glider we came very close to impacting it.

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.