How many years have passed since US military aircraft readiness checks?

During this time, 49 aircraft were controlled. It turned out that 26 of them did not meet the readiness indicators.

In conclusion, we are talking about the fact that military aircraft have not passed an adequate combat readiness check for 10 years, therefore they are not able to perform the relevant tasks. At the same time, only 4 out of 49 aircraft met the requirements for combat readiness.