MAINTENANCE PRACTICES
61-00-15
Page 6-42
Rev. 24 Dec/20
Propeller Owner's Manual
115N
CAUTION:
IF REFLECTIVE TAPE IS USED FOR
DYNAMIC BALANCING, REMOVE
THE TAPE IMMEDIATELY UPON
COMPLETION. TAPE THAT REMAINS ON
THE BLADE WILL PERMIT MOISTURE TO
COLLECT UNDER THE TAPE AND CAUSE
CORROSION THAT CAN PERMANENTLY
DAMAGE THE BLADE.
(7) Unless otherwise specified by the engine or airframe
manufacturer, Hartzell Propeller Inc. recommends that
the propeller be dynamically balanced to a reading of
0.2 IPS, or less.
(8) If reflective tape is used for dynamic balancing, remove
the tape immediately after balancing is completed.
(9) Make a record in the propeller logbook of the number
and location of dynamic balance weights, and static
balance weights if they have been reconfigured.
9. Propeller Low Pitch Setting
WARNING 1: RPM ADJUSTMENTS MUST BE MADE
WITH REFERENCE TO A CALIBRATED
TACHOMETER. AIRCRAFT MECHANICAL
TACHOMETERS DEVELOP ERRORS OVER
TIME, AND SHOULD BE PERIODICALLY
RECALIBRATED TO MAKE SURE THE
PROPER RPM IS DISPLAYED.
WARNING 2: LOW PITCH BLADE ANGLE ADJUSTMENTS
MUST BE MADE IN ACCORDANCE WITH
THE APPLICABLE TYPE CERTIFICATE
OR SUPPLEMENTAL TYPE CERTIFICATE
HOLDER'S MAINTENANCE DATA.
CAUTION:
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.
