> Not having any new civil aviation planes for 30 years worked...
The A220, A350, and A380 are all newer than 30 years old. (A321 is barely younger than that and A330 barely older.) Boeing has released the 777 and 787 in the last 30 years. The Cirrus SR20 and SR22 are newer than that, as is the SF50 jet. The Diamond DA40, DA42, and DA62 are newer. The Honda Jet is newer. Cessna has a handful of business jets newer than that. The Embraer Phenom 100 and 300 are newer than that. There are variants of the CRJ newer than that (-700, -900, -1000).
That's a lot of new civil aviation aircraft designs in the last 30 years.
The A220, A350, and A380 are all newer than 30 years old. (A321 is barely younger than that and A330 barely older.) Boeing has released the 777 and 787 in the last 30 years. The Cirrus SR20 and SR22 are newer than that, as is the SF50 jet. The Diamond DA40, DA42, and DA62 are newer. The Honda Jet is newer. Cessna has a handful of business jets newer than that. The Embraer Phenom 100 and 300 are newer than that. There are variants of the CRJ newer than that (-700, -900, -1000).
That's a lot of new civil aviation aircraft designs in the last 30 years.