The T3 lacked the range; I believe Athens was the furthest a T3 flew.
Trident 3 G-AWZT was on Heathrow to Istanbul when it was in the midair over Yugoslavia in 1976.
it dropped it's inert payload into Red Square
Pretty unbelievable ... except by Mathias Rust !
https://en.wikipedia.org/wiki/Mathias_Rust