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FAASTeam Notice
Type: Local Air Safety Information
Notice Date: Thursday, April 11, 2019
Notice Number: NOTC8397
Glider Operations Near Portland-Hillsboro Airport (KHIO)
This notice expired on
Monday, September 30, 2019

During the summer of 2015 there were three filed near mid-air collision (NMAC) reports in the vicinity of HIO involving gliders and aircraft participating in air traffic control services. One NMAC involved a VFR Mooney and a glider operating 5 nautical miles north of the North Plains Gliderport (1OR4). Two NMACs included high performance turbo jets departing HIO and gliders operating near HETAT waypoint. The NMACs occurred at 2600, 2800, and 5000 feet.In one instance the glider was operating with a mode C transponder and was visible to air traffic control on radar. In the other two instances the gliders were not utilizing a transponder and thus did not produce a consistently visible radar return. In the latter two instances, the air traffic controllers did not observe a pending conflict on their radar display.  See the attached LTA-P80-8 and graphical depiction.