Manish_P wrote: As of this moment how many F35s are flying...
The 300th F-35 would be delivered off of the production line in a couple of months time, and by the end of the year more than 600 pilots (from around the world) would have been trained to fly it by its training program. Currently, squadrons/units with the USAF, USMC, Israel, and Italy have declared Initial Operational Capability while Japan and Norway are fielding aircraft into their first operational units. Japan deployed its first aircraft to Misawa recently and all the jets coming from the US or rolling from its line will go to boost that unit for now. The USN will declare IOC by the end of this year, and by the end of this year or early next year the USMC will declare FOC. USAF would also have met most if not all of the "technical parameters" for FOC by the year end but would have to wait to meet personnel targets (number of trained maintainers and pilots etc) to declare their As fully operational.
South Korea also plans to transition its first few aircraft back to its home base by the end of the year, setting itself up to declare its IOC as well. By the end of the year Australia, too would begin forming up its first combat squadron as it transitions its initial aircraft and trained pilots to RAAF Base Williamtown. All in the F-35 (A or B variant) is currently flying from 15 US or International bases which is set to grow considerably in the coming couple of years as other development partners and FMS customers take their aircraft back home after completing initial training in Arizona.
On a program level, the System Development and Demonstration (SDD) phase would wind up by May-June of this year, and the program will shift to a transition phase where it will be addressing post SDD needs, any software fixes it needs that are left over from the SDD and any capability not included in SDD that the customers now want etc..This phase will last around 6 months to a year after which the program will go straight into a Follow on Development phase and begin developing hardware and software for its block-4 configuration which will begin showing up in the early 2020s.
As I had said earlier, if the F-35 is even considered by the IAF/MOD, by the time this competition is decided and the first aircraft likely fielded (mid 2020s), more F-35s will likely be flying around the world than Typhoons, Rafale's, MiG-35's, and Gripen-Es combined.