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Butler Avionics Receives Learjet 31A STC Approval of ADS-B

Olathe, Kansas, June 22, 2018 – Butler Avionics, Inc., a subsidiary of Butler National Corporation (OTC QB: BUKS), received Federal Aviation Administration (“FAA”) Supplemental Type Certificate (“STC”) approval for its ADS-B(Out) solution in the Learjet 31A.

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