Propeller Owner’s Manual
139
INTRODUCTION
61-00-39
Page 1-17
Rev. 17 Apr/20
C. Recommended Facilities
(1) Hartzell Propeller Inc. recommends using Hartzell
approved distributors and repair facilities for the
purchase, repair, and overhaul of Hartzell propeller
assemblies or components.
(2) Information about the Hartzell Propeller Inc. worldwide
network of aftermarket distributors and approved repair
facilities is available on the Hartzell website at
www.hartzellprop.com.
14.
Definitions
(Rev. 3)
A basic understanding of the following terms will assist in
maintaining and operating Hartzell Propeller Inc. propeller
systems.
Term
Definition
Annealed
Softening of material due to
overexposure to heat
Aviation Certified
Intended for FAA or international
equivalent type certificated aircraft
applications. A TC and PC number
must be stamped on the hub, and a PC
number must be stamped on blades.
Aviation Experimental
Intended for aircraft/propeller
applications not certified by the FAA
or international equivalent. Products
marked with an “X” at or near the end of
the model number or part number are
not certified by the FAA or international
equivalent and are not intended to use
on certificated aircraft.
Beta Operation
A mode of pitch control that is directed
by the pilot rather than by the propeller
governor
Beta Range
Blade angles between low pitch and
maximum reverse blade angle