Here's an interesting insight into owning a turbine engine. Flying magazine contributor Dick Karl owns a Piper Cheyenne, recently had to do a hot section inspection on one engine, turns out some guide vanes were burned through. That ment that the next stage turbine blades had to be replace.
58 X $265.00 = $15,300....for parts alone, not labour for the HSI. He doesnt mention if any other work needed to be done.
Eye watering.
Edit, page 2 has a list of work.
Turbine blades $15,300
Vane ring $7,900
IR duct $3,714
Parts Total $37,531 + Labour $8,370 for a grand total of .......
$45,901........and this was for an angine that was working fine, just that it came up for a sceduled HSI.
Maintenance of An Older Airplane | Flying Magazine