If a airframe maker certifies a new type, a derivate of an existing aircraft, lets say Fokker F28 to F100, or 737-200 to 737NG. What is decisive to have this airplane covered under the same Type Rating as the original plane?
Is it the the handling, the systems or the flightdeck layout?
I now that the classic 747's for exemple have another rating than the 747-400. Are the systems that different, or is the new 2 crew flightdeck the decisive factor?
The 737 on the other side is under the same rating (with differential courses) in all its versions, aren't 737-200 and say, 737-900, quite different in handling and systems?
Or is it just a matter of how well the manufacturer goes along with the certificacion agency
I hope you understand my question, I speak two langauges perfectly, sadly english is not one of them
