Propeller Owner’s Manual
147
INSPECTION AND CHECK
61-00-47
Page 5-23
Rev. 17 Sep/20
(c) Refer to the section, “Vibration” in the Testing and
Troubleshooting chapter of this manual.
1 Perform the checks to determine possible cause
of the vibration.
a If no cause is found, the propeller could be
the source of the vibration. Examine the
propeller in accordance with the Inspection
steps in this section.
(2) Inspection
(a) Remove the spinner dome.
(b) Visually examine the hub, blades, and blade clamps
(if applicable) for cracks.
1 Pay particular attention to the blade retention
areas of an aluminum hub.
2 A crack may be readily visible, or may be
indicated by grease leaking from a seemingly
solid surface.
(c) If cracks are suspected, additional inspections must
be performed to evaluate the condition before further
flight.
1 These inspections typically include disassembly
of the propeller, followed by inspection of parts,
using nondestructive methods in accordance
with published procedures.
2 These inspections must be performed at
a certified propeller repair station with the
appropriate rating.
(d) Inspect the movement of the propeller blades in
accordance with the section, “Loose Blades” in this
chapter.
(e) Inspect blade track in accordance with the section,
“Blade Track” in this chapter.
CAUTION:
DO NOT USE BLADE PADDLES
TO TURN BLADES.
1 Manually (by hand) attempt to turn the blades
(change pitch).
2 Visually check for damaged blades.
