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CH-53A vs CH-53D

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Any noticeable exterior differences between the two models?

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54 minutes ago, Tank said:

The biggest that I recall is the Engine Air Particle Separators (EAPS) on the D model and not on the A model. The stub wing looks different also but don't quote me on that.

 

https://www.sikorskyarchives.com/S-65H-53D SEA STALLION.php

 

HTH

 

 

All CH-53As ended up with EAPS, but they were not initially installed early in the production run.

 

As far as I can tell, there were few external difference, the D got an improved transmission and an automatic rotor fold.

 

mason

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The CH-53A’s that the USAF obtained all came with EAPS.   They also had the -6B engines.   I remember having to be very careful when flying them out of Kirtland AFB as the engines were not very powerful.   Externally, they looked just like any other H-53.   Once we put the titanium rotor blades, hoist, air refueling probe and the -100 engines on them, they became very good helicopters.   I landed one in the Pecos mountains one night at 12,500 feet during a rescue.  

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