Propeller Owner’s Manual
136
INSPECTION AND CHECK
61-00-36
Page 5-5
Rev. 2 Feb/17
2. Operational Checks
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.
A. Following propeller installation and before flight, perform
initial run-up as outlined in Operational Tests in the Testing
and Troubleshooting chapter of this manual.
B. Check the propeller speed control and operation from low
pitch to high pitch and manual control and operation in
beta range (low pitch to reverse pitch), using the procedure
specified in the Pilot Operating Handbook (POH) for the
aircraft.
(1) Propeller speed control and operation may be checked
by using information in the Description and Operation
chapter of this manual if not addressed in the Pilot
Operating Handbook (POH).
(2) Perform all ground functional and cycling checks with a
minimum propeller RPM drop required to demonstrate
function.
(3) A typical RPM drop is 100 to 300 RPM for non-feathering
propellers.
WARNING:
ABNORMAL VIBRATION CAN BE AN
INDICATION OF A FAILING PROPELLER
BLADE OR BLADE RETENTION COMPONENT.
AN IN-FLIGHT BLADE SEPARATION CAN
RESULT IN DEATH, SERIOUS BODILY INJURY,
AND/OR SUBSTANTIAL PROPERTY DAMAGE.
C. Check for any abnormal vibration during this run-up.
(1) If vibration occurs, shut the engine down, determine
the cause, and correct it before further flight. Refer to
the Vibration section in the Testing and Troubleshooting
chapter of this manual.
