MAINTENANCE PRACTICES
61-00-15
Page 6-38
Rev. 24 Dec/20
Propeller Owner's Manual
115N
(12) Optionally, perform dynamic balancing in accordance
with the procedures and limitations specified in the
section, "Dynamic Balance" of this chapter.
8. Dynamic Balance
A. Overview
CAUTION 1: INSTRUCTIONS AND PROCEDURES IN
THIS SECTION MAY INVOLVE PROPELLER
CRITICAL PARTS. REFER TO THE
INTRODUCTION CHAPTER OF THIS
MANUAL FOR INFORMATION ABOUT
PROPELLER CRITICAL PARTS. REFER TO
THE ILLUSTRATED PARTS LIST CHAPTER
OF THE APPLICABLE OVERHAUL
MANUAL(S) FOR THE IDENTIFICATION OF
SPECIFIC PROPELLER CRITICAL PARTS.
CAUTION 2: IF REFLECTIVE TAPE IS USED FOR
DYNAMIC BALANCING, DO NOT APPLY THE
TAPE ON EXPOSED BARE METAL OF THE
BLADE. THIS WILL ALLOW MOISTURE TO
COLLECT UNDER THE TAPE AND CAUSE
CORROSION THAT CAN PERMANENTLY
DAMAGE THE BLADE. REFLECTIVE TAPE
MUST BE REMOVED AFTER DYNAMIC
BALANCING IS COMPLETED.
NOTE: Dynamic balance is recommended to reduce
vibrations that may be caused by a rotating system
(propeller and engine) imbalance. Dynamic
balancing can help prolong the life of the propeller,
engine, airframe, and avionics.
(1) Dynamic balance is accomplished by using an accurate
means of measuring the amount and location of the
dynamic imbalance.
(2) The number of balance weights installed must not
exceed the limits specified in this chapter.
(3) Follow the dynamic balance equipment manufacturer’s
instructions for dynamic balance in addition to the
specifications of this section.
NOTE: Some engine manufacturers' instructions also
contain information on dynamic balance limits.
