Total hours on the airframe

[AP AVM]

Thanks Harb for getting back. I did some Google searching on this and you are right it states that 10K hours on a airframe in US is considered as high time airframe but then if aircraft goes through "C check" it's life can be extended to another 10K hours. I'm sure there are other C337s flying in great condition with over 10K.
So in case of AVM, she was high time airframe at 9K hours when she was bought by Cham and shipped to Canada back in 1999.