MAINTENANCE PRACTICES
61-00-15
Page 6-30
Rev. 24 Dec/20
Propeller Owner's Manual
115N
B. Repair of Nicks and Gouges
(1)
Local repairs may be made using files, electrical or air
powered equipment. Use emery cloth, scotch brite, and
crocus cloth f
or final finishing.
CAUTION 1: ANY REPAIR THAT INVOLVES COLD
WORKING THE METAL, RESULTING
IN CONCEALMENT OF A DAMAGED
AREA, IS NOT PERMITTED. A STRESS
CONCENTRATION MAY EXIST THAT
CAN RESULT IN A BLADE FAILURE.
CAUTION 2: SHOT PEENED BLADES ARE
IDENTIFIED WITH AN "S" IMMEDIATELY
FOLLOWING THE BLADE MODEL
NUMBER, AS DESCRIBED IN THE
DESCRIPTION AND OPERATION
CHAPTER OF THIS MANUAL. BLADES
THAT HAVE DAMAGE IN 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
A CERTIFIED PROPELLER REPAIR
STATION WITH THE APPROPRIATE
RATING IN ACCORDANCE WITH
HARTZELL PROPELLER INC.
ALUMINUM BLADE OVERHAUL
MANUAL 133C (61-13-33).
