Knife Edge Pass
This is called "Stabilized 3/4 Inverted Flight"; a Knife-Edge Pass is with a 90 degree roll toward the crowd. The F-16 can't produce enough lift with its rudder alone to perform a level Knife-Edge Pass. To overcome this, the pilot must pass the 90 degree mark and then pitch forward to maintain level flight. Also note that the FPM is not visible in the HUD during the maneuver. The pilot must maintain level flight with the Vertical Velocity Indicator, or VVI tape (to the right of the artificial horizon on the instrument panel).