To complete hangar 2 in Play Edward Scheme in Super Shifty in Karl’s Bay in Deathloop, you have to hit each of the levers based on which one is beeping before the timer runs out. Each time you pull another lever the timer is reset for the next one.
The first lever is at the top of the hangar near the box, the next lever is on the same level on the opposite side of hangar 2, the third lever is again on the opposite side of the hangar but just below the airplane embedded in the wall. The fourth lever is at the back of the hangar 2 slightly above the floor on a walkway. The fifth lever is on the wall below the second lever on a platform that is a bit higher than the fourth lever. The last lever is on the cockpit of the suspended airplane in the middle of the hangar. You can now go back to the first lever and open the box.