What is the hardest jet to fly?
The SR-71 Blackbird is a very difficult plane to fly. It is one of the fastest and highest-flying aircraft ever built, and it has a number of unique challenges that make it difficult to operate. SR-71 is still the fastest air-breathing manned Airplane in the world. Kelly Johnson said that he didn’t think any airplane would be able to fly faster and higher than his SR-71.The high-speed SR-72 plane can, according to some estimations, outrun some missiles and weapons systems, due in large measure to its turbine-based combined cycle (TBCC) engine.The Blackbird didn’t just look cool; it was FAST. The Blackbird was built to go up to about Mach 3. Over 4,000 missiles were fired at the SR-71 during its 25-year service, but none ever hit its mark.