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NEWS | May 17, 2023

AH-64: Removing Nose Gearbox Blocker Plates

BLUF: Use a little muscle to remove the Apache nose gearbox blocker plates and resist using tools.  

 AH-64 Apache rolls onto the taxiway and to the takeoff pad.
Photo by Thomas Alvarez

This article initially appeared in PS 699 (Feb 11), p. 35.
 
Now that the AH-64 aircraft have the nose gearbox blocker plates, take care how you remove them. AH-64 blocker plates come with NSN 1560-01-616-4633, PN 7-511141631-101. E-model blocker plates come with NSN 1560-01-647-6433, PN 7-511141631-103.
 
Keep in mind that the blocker plate is tough to remove because added hook-and-loop fasteners secure it more tightly. You’ll have to use some elbow grease—but not tools—to work blocker plates loose from the gearbox.
 
If you’re thinking of using a screwdriver or a pocket tool to get the job done, think again. You may get the blocker plate off, but you’ll also break or damage the plate or the nose gearbox fairing.

Do not pry loose with tools
Do not pry loose with tools
 
So, at every pre-flight inspection or every 25 hour/14-day gearbox inspection, remove the blocker plate the right way using your hands and not your tools.
Editor’s Note: Minor edits have been made to the original version of this article to add NSNs and part numbers for the blocker plates.
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