An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

Home : Articles
Would you stake your life, right now, on the condition of your equipment?
NEWS | Aug. 15, 2022

Apache: Got Problems with EDECU?

BLUF: Use enhanced procedures found in H-64-20-AMAM-03 with addendum to troubleshoot retrofitted EDECUs.
Soldiers conducting a 500 hours phase maintenance on an AH-64 Apache helicopter.
Photo by Charles Rosemond
Mechanics, if your unit has had the latest version of the enhanced digital electronic control unit (EDECU), NSN 2995-01-680-3143, PN 4155T12P09, installed on any of your aircraft, there’s a more in-depth troubleshooting procedure you need to follow. Start by double-checking each aircraft’s data plate to see if the P09 version EDECU has been installed.
Check data plate for part number
Check data plate for part number
If it has and there’s a fault or failure, Aviation Maintenance Action Message (AMAM) H-64-20-AMAM-03 instructs you to swap the EDECU with an adjacent engine to see if the problem follows. If it does, then replace the EDECU and submit a product quality deficiency report (PQDR).  When ordering a replacement EDECU use NSN 2995-01-680-3143 with a 2B advice code. This will ensure you get the P09 version.
To view and download the AMAM, with CAC in hand, visit: 

Click on Consolidated Listings, select Aviation as the Record Type, H-64 as System Type and AMAM as Message Type. Then click Search. Results are listed in chronological order.
Want to get better search results faster? 
Click the link below to access our "how to" guide
After entering a keyword, you must hit or click the Search bar/box below for the function to work.
Simply hitting Return won't yield results.
Note about links to archive articles

If you come across a link to a pre-2014 PS Magazine issue or article that uses LOGSA in the web address (URL), use this link instead:
For issues/articles from 2014 and after, click on the Archive/Index tab in the top menu of this website.

BE ADVISED: With the migration to Army365, emails in older articles may still reflect an address. To update, change the domain to