The C-130H's avionics modernization will replace its old analog gauges with digital displays, as well as an array of other navigation and flight upgrades.
The complex simulations at Naval Air Station Patuxent River in Maryland were meant to test how well the F-35 would perform in real-world combat scenarios.
A new restriction bars airmen from turning on the autopilot when flying at an altitude of less than 2,000 feet at night, or when flying in bad weather.