I've been confused as to why Fighter Jets do not seemingly spawn at all in the hangars of Aerospace Defense Complex.
Thus, I did some experiments.
Initially, I tried resetting Germany and then teleporting straight to A.D.C. 10 times. I cut it short to try different testing methods.
I decided to set the rarity in .dat files for the Fighter Jet and the Olive (Russian) Tank to Common (both were at Legendary beforehand) and tried the above again, but it only made the tank appeared more frequently in map resets.
The same rarity changes did boost the number of jets that appeared in France with that map's resets, however.
So I went and unlocked Germany for editing to see what is going on. There are indeed 2 Fighter Jet spawns in the hangar as claimed, but I thought those spawns might be bugged. I panned the camera to Schwarzwald Military Base and added 30 more jet spawns and 5 more tank spawns for comparison. After saving changes, I kept the rarities for the tank and jet at Common, reset the map and then played the modified map for testing. One-third of the tank spawns had a tank in it, but none of the 30 jet spawns had any jets. I tried resetting the map 2 more times but only some number of tanks appeared in the spawns I created.
That led to me thinking that the jet spawns in Germany may be bugged.