Guys,
To those that have replied usefully, many thanks.
The R66 airframe is a 2000hr unit so that part of of the overhaul will be the same. However the engine requires some additional parts to be replaced at 4000hrs, so the engine part of the cost, listed as $167K will be more expensive the second time round...but how much.
Just wondered if anyone knows?
Thanks again,
CRAN