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?
Articles
NEWS | Jan. 20, 2023

AH-64/H-60: Managing Compressor Issues and Engine Noise

BLUF: The Utility Helicopter Project Office offers guidance on ways to manage compressor issues and engine noise.

Soldiers Working on Black Hawk
Photo by Sgt. Sarah Sangster
 
Air flow disruption and damaged or bent compressor blades are common when aircraft operate at the lowest of altitudes. Effectively dealing with both compressor issues and engine noise includes engine washes for performance recovery, borescope of the compressor and possibly blending or even clipping the blades.
 
PM Utility Helicopter offers some guidance on the task of blending the blisks (compressor blades) HERE. You'll need your CAC to access.

It refers to the engine manual, TM 1-2840-248-23&P (EM 0271, Oct 19), which can be searched on the ETM website HERE.
 
If you have questions on this guidance, contact Michael Weist at:
T700 Engines
Black Hawk
UH-60
AH-64 Apache
Apache
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.
LOGSA Links/URLs
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 @mail.mil address. To update, change the domain to @army.mil