1000 produced F-35 but inactive without Block 4

The production of a thousandth edition of a 5th generation F-35 multipurpose aircraft has just been completed. Thus, there are more efficient Lightning II machines in the planet than any another kind of device but F-16 (still over 2,000 in service) and a widely understood household from Su-27 (over 1240). Nevertheless, the program faces problems related to the mark version of the aircraft.