On 4 Jun 2004 21:37:26 -0700, (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

Under Part 91 there is no mandatory overhaul period. However, Hartzell has
a number of different recommended overhaul periods, based on either time in
service or calendar time, depending on the type of propeller and also the
type of service.

Although 900 hours is less than the time in service for most of their
models, ten years is well in excess of the recommended time for most, which
seems to be either five years or six years depending on various factors (at
least for a hub inspection, and probably for the blades, too).

If you call Hartzell with the specifics of your propeller, they should be
able to give you accurate information.


Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)