INSPECTION AND CHECK
61-00-39
Page 5-18
Rev. 17 Apr/20
Propeller Owner’s Manual
139
5. Inspection Procedures
A. Blade Damage
(Rev. 1)
(1) Refer to the section, “Aluminum Blades” in the
Maintenance Practices chapter of this manual for
damage evaluation and repair information.
B. Grease/Oil Leakage
(Rev. 1)
WARNING:
UNUSUAL OR ABNORMAL GREASE
LEAKAGE OR VIBRATION, WHERE
THE CONDITION STARTED SUDDENLY,
CAN BE AN INDICATION OF A FAILING
PROPELLER BLADE OR BLADE
RETENTION COMPONENT. AN INFLIGHT
BLADE SEPARATION CAN RESULT IN
DEATH, SERIOUS BODILY INJURY, AND/
OR SUBSTANTIAL PROPERTY DAMAGE.
UNUSUAL OR ABNORMAL GREASE
LEAKAGE OR VIBRATION DEMANDS
IMMEDIATE INSPECTION.
(1) Important Information
(a) A new or newly overhauled propeller may leak
slightly during the first several hours of operation.
This leakage may be caused by the seating of seals
and O-rings, and the slinging of lubricants used
during assembly. Such leakage should cease within
the first ten hours of operation.
(b)
Leakage that persists beyond the first ten hours of
operation on a new or newly overhauled propeller,
or occurs on a propeller that has been in service for
some time will require repair.
1 A determination should be made as to the
source of the leak. If the source of the leak is
the O-ring seal between the engine and the
propeller flange or a lubrication fitting, field repair
is permitted.
2 All other leakage repairs should be referred
to
a certified
propeller repair station with the
appropriate rating.
3 If abnormal leakage is detected, inspect
the propeller assembly using the Inspection
procedure steps in this section.
