Narrative:

The vsf airport put out a NOTAM for glider activity within 5 miles of the airport at or below 10;000 feet. The gliders were numerous and not many had mode C capability. I was providing flight following for aircraft and advised him of the activity. I noticed a primary target in his vicinity and issued the traffic. After issuing; the pilot reported numerous gliders with one coming right at him at his altitude. He changed course abruptly to the south to avoid the traffic. This glider activity disrupted flight operations coming out of leb and caused many issues.we need to have a letter of agreement with vsf on the glider operations that come from there; either develop a specific area they can operate in; or limit the altitudes.

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Original NASA ASRS Text

Title: ZBW Controller reported an unsafe situation involving a VFR aircraft and numerous gliders that were NOTAMed to be where they were. Most gliders did not have Mode C capability.

Narrative: The VSF airport put out a NOTAM for glider activity within 5 miles of the airport at or below 10;000 feet. The gliders were numerous and not many had Mode C Capability. I was providing flight following for aircraft and advised him of the activity. I noticed a primary target in his vicinity and issued the traffic. After issuing; the pilot reported numerous gliders with one coming right at him at his altitude. He changed course abruptly to the south to avoid the traffic. This glider activity disrupted flight operations coming out of LEB and caused many issues.We need to have a letter of agreement with VSF on the glider operations that come from there; either develop a specific area they can operate in; or limit the altitudes.

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.