Orchestrating a plane crash seems to be one of the CIA's favorite methods of eliminating witnesses and problem citizens. Other common methods are suiciding, car wrecks, and drug overdose. Of course, all of these are covered up and made to look like an accident or suicide.
You didn't honestly believe that Prince's Fentanyl overdose was accidental, did you? He also spoke out about 911 truth, and his message reached the ears of millions. Deep state does not like that.