CF6-80C2 modification programmes, Issue 48 Oct/Nov 2006

The build standard of the CF6-80C2 series has improved during its 20
years of production, and has required few modifications or upgrades.
There are some upgrades that are appropriate for airlines operating in
harsh environments and suffering poor on-wing reliability.
The HPT upgrade and Tech CF6 programmes are
intended to improve engine performance. Their
high cost means they can only be justified for
engines that are operating in harsh
environments and that suffer short maintenance
intervals and high shop visit costs.