Robert M. Gary wrote:
My Hertzile (?sp?) has almost 900 since its been torn down. I've heard
different things from different mechanics. I know the actual TBO on
the prop is now something like 20,000 hours. However, I don't want to
get stuck somewhere with a problem. How much time do most people here
put on their props?
BTW: I think the last overhaul was about 10 years ago.
-Robert
I'll echo Ron's response, and add the following.
Our two-blade blade Hartzell CS prop TBO is 2000 hours or 5 years.
That's pretty typical for props of this type. It is highly unlikely any
prop would have a 20000 hr TBO. That sounds more like a life limit to
me. Lower calendar TBOs are specified if the airplane is kept outside.
Call the manufacturer or a good overhaul shop for more information.
When we decided to overhaul our prop at our last annual, it had a bit
under 1000 hours and 24 years (!) since OH. However, cosmetically, it
was in remarkably good shape because the airplane had been hangared for
over half that time. Cost us $1800 from Sensenich Propeller Services
including shipping (our mechanic's airport is only about 50 miles away
from their facility in Lancaster, PA, so they came out in their own truck).
Incidentally, we also decided to have the propeller governor overhauled
at the same time. The flyweight assembly was found to be out of
tolerance and superceeded by a newer part. The governor OH cost $950
with the new assembly.
Not sure whether it's because of the governor or the prop work, but the
prop cycles a bit faster now. You can see the finished work on my site.
Click through:
Aviation-Articles-Maintenance-Annual 2003
-Doug
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Doug Vetter, CFIMEIA
http://www.dvcfi.com
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