Then you probably don't want to fly in a T-tail jet. [0] [1] Or a helicopter [2]. Or in a jetliner at cruise. [3] [4] The fact is, every single airplane ever

Then you probably don't want to fly in a T-tail jet. [0] [1] Or a helicopter [2]. Or in a jetliner at cruise. [3] [4] The fact is, every single airplane ever built is unstable in the wrong circumstances. They stall, they spin, they lose lift, they suffer mechanical failures. Aeronautical engineering, rigorous maintenance, and thorough pilot training have resulted in the safest transportation system that has ever existed, but the only completely stable aircraft is one that's sitting in a hanger. [0] https://en.wikipedia.org/wiki/T-tail https://en.wikipedia.org/wiki/T-tail [1] https://aviation.stackexchange.com/questions/1400/how-do-conventional-and-t-tails-differ https://aviation.stackexchange.com/questions/1400/how-do-con... [2] https://aviation.stackexchange.com/questions/35764/are-helicopters-aerodynamically-stable https://aviation.stackexchange.com/questions/35764/are-helic... [3] https://en.wikipedia.org/wiki/Coffin_corner_(aerodynamics) https://en.wikipedia.org/wiki/Coffin_corner_(aerodynamics) [4] https://www.faa.gov/regulations_policies/advisory_circulars/index.cfm/go/document.information/documentid/1020859 https://www.faa.gov/regulations_policies/advisory_circulars/...