Hartzell HC-82XF-1 Owner's Manual page 225

CAUTION 2:
CAUTION 3:
(1) Repairs to the leading or trailing edge are to be
accomplished by removing material from the bottom
of the damaged area. Remove material from this point
out to both sides of the damage, providing a smooth,
blended depression which maintains the original airfoil
general shape.
(2) Repairs to the blade face or camber should be made
in the same manner as above. Repairs that form a
continuous line across the blade section (chordwise) are
unacceptable.
MAINTENANCE PRACTICES
Propeller Owner's Manual
A SHOT PEENED BLADE IS IDENTIFIED
WITH AN "S" FOLLOWING THE BLADE
MODEL NUMBER, AS DESCRIBED IN
THE DESCRIPTION AND OPERATION
CHAPTER OF THIS MANUAL. A BLADE
THAT HAS BEEN SHOT PEENED WILL
HAVE A "PEBBLE GRAIN" SURFACE.
A SHOT PEENED BLADE THAT HAS
DAMAGE IN THE SHOT PEENED
AREAS IN EXCESS OF 0.015 INCH
(0.38 MM) DEEP ON THE FACE OR
CAMBER OR 0.250 INCH (6.35 MM) ON
THE LEADING OR TRAILING EDGES
MUST BE REMOVED FROM SERVICE,
AND THE REWORKED AREA SHOT
PEENED BEFORE FURTHER FLIGHT.
SHOT PEENING OF AN ALUMINUM
BLADE MUST BE ACCOMPLISHED BY
AN FAA APPROVED REPAIR FACILITY
IN ACCORDANCE WITH HARTZELL
ALUMINUM BLADE MANUAL 133C
(61-13-33).
175
61-00-75
Page 6-11
Rev. 1 Jun/11