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CH-53K ground tests

Randy Daytona

Cold War Relic
Super Moderator
And this is the Chinook those big engines (with the appropriate upgrades to the transmission and combining gearbox) should be added to: the Model 347 (it is still on display at Fort Rucker)

The aircraft was extensively modified and featured a 110 inch stretch in the main cabin, retractable landing gear, a four blade rotor system in which the blades were longer than the standard CH-47D blades by 30 inches, and an aft pylon extended upwards by 30 inches.


The Boeing Vertol BV-347 in flight with the gondola extended.

The Boeing Vertol BV-347 with the wing rotated vertically.


The Boeing Vertol BV-347 undergoing flight testing.


Well-Known Member
Super Moderator
That’s a low-cost trainer. It just uses off the shelf computer parts to give a general cockpit mock-up, it’s not representative of the actual hardware. You can see the screens simulate the bezels of the actual physical-button MFDs.

We had them to practice button-pushing, switchology, and learn the new HOL software in VFA.
Did you use them in Whidbey too?