Propeller Owner’s Manual
139
INTRODUCTION
61-00-39
Page 1-5
Rev. 17 Apr/20
(11) If the propeller is equipped with an ice protection system
that uses components supplied by Hartzell Propeller
Inc., applicable instructions and technical information for
the components can be found in Hartzell Propeller Inc.
Ice Protection System Manual 180 (30-61-80).
(12) Propeller ice protection system components not
supplied by Hartzell Propeller Inc. are controlled by the
applicable TC or STC holder’s Instructions for Continued
Airworthiness (ICA).
(13) Approved corrosion protection followed by approved
paint must be applied to all aluminum blades.
(a) For information about the application of corrosion
protection and paint, refer to the Maintenance
Practices chapter of this manual. Operation of
blades without the specified coatings and finishes,
i.e., “polished blades”, is not permitted.
2.
Airframe or Engine Modifications
(Rev. 1)
A. Propeller Stress Levels
(1) Propellers are approved vibrationwise on airframe
and engine combinations based on tests or analysis
of similar installations. This data has demonstrated
that propeller stress levels are affected by airframe
configuration, airspeed, weight, power, engine
configuration, and
approved
flight maneuvers. Aircraft
modifications which can effect propeller stress include,
but are not limited to: aerodynamic changes ahead of
or behind the propeller, realignment of the thrust axis,
increasing or decreasing airspeed limits, increasing
or decreasing weight limits (less significant on piston
engines), and the addition of approved flight maneuvers
(utility and aerobatic).
