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This instrument informs the pilot of the aircraft's rate of climb or descent. Like the altimeter, the VVI detects pressure changes to identify a climb or descent. However, unlike the altimeter, the VVI will calculate the rate of climb/descent and present this to the pilot in feet per minute (FPM). A normal climb rate for a single engine general aviation aircraft is around 600 feet per minute. The backup VVI instrument (primary VVI can be displayed on the Heads Up Display) on the F-15E has a maximum rate of 6000 feet per minute. Since the Strike Eagle can easily exceed a climb rate of 20,000 feet per minute, this gauge is usually "pegged" at 6000 FPM.
In 2007, the 90th Fighter Squadron began replacement of the F-15E Strike Eagle with the F-22 Raptor to enhance its mission. The 90th Fighter Squadron flew the F-15 Strike Eagle from 1994-2007.
On 30 July 2010 Elmendorf AFB was re-designated Joint Base Elmendorf-Richardson
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90th Fighter Squadron
"Dicemen" Aviation (3rd Wing Group)
Updated: May 23, 2017