Propeller Owner’s Manual
115N
INSPECTION AND CHECK
61-00-15
Page 5-25
Rev. 24 Dec/20
(2) Inspection Procedure
(a) Remove the spinner dome.
CAUTION:
PERFORM A VISUAL INSPECTION
WITHOUT CLEANING THE PARTS. A
TIGHT CRACK IS OFTEN EVIDENT
DUE TO TRACES OF GREASE
EMANATING FROM THE CRACK.
CLEANING CAN REMOVE SUCH
EVIDENCE AND MAKE A CRACK
VIRTUALLY IMPOSSIBLE TO SEE.
(b) Perform a visual inspection of the hub, blades, and
blade retention areas to locate the source of the
grease leak.
1 If the source of the grease leak is a lubrication
fitting, blade O-ring, or the hub parting line,
repairs can be accomplished during scheduled
maintenance as long as flight safety is not
compromised.
a To repair a grease leak from a lubrication
fitting, blade O-ring, or hub parting line,
the propeller must be disassembled and
inspected at a certified propeller repair
station with the appropriate rating.
2 If the source of the grease leak is a component
or location other than a lubrication fitting, blade
O-ring, or the hub parting line, the propeller must
be disassembled and inspected at a certified
propeller repair station with the appropriate
rating before further flight.
(c) Perform a visual inspection for cracks in the hub.
1 Extra attention should be given to the blade
retention area of the hub.
2 A crack may be visible or may be indicated by
grease leaking from a seemingly solid surface.