Maciej Lasek

Maciej Grzegorz Lasek is a Polish engineer, specializing in flight mechanics, PhD, Chairman of the Committee for Investigation of National Aviation Accidents. He was the head of a commission that investigated the 2010 Polish Air Force Tu-154 crash.

Argument with Antoni Macierewicz

In April 2020, former defense minister Antoni Macierewicz posted a tweet accusing Lasek of falsifying evidence related to the Smolensk disaster, and in a July 2020 Sejm defense committee meeting alleged that Lasek hid evidence of explosions on the aircraft. Lasek sued Macierewicz alleging Macierewicz's statements were defamatory, seeking a public apology a payment to a charity, and cessation of statements on the topic. Lasek won the suit in September 2025.