MAINTENANCE PRACTICES
61-00-15
Page 6-29
Rev. 24 Dec/20
Propeller Owner's Manual
115N
6. Aluminum Blades
(Rev. 2)
WARNING: NICKS, GOUGES, OR SCRATCHES OF
ANY SIZE CAN CREATE A STRESS RISER
THAT COULD POTENTIALLY LEAD TO
BLADE CRACKING. ALL DAMAGE SHOULD
BE VISUALLY EXAMINED CAREFULLY
BEFORE FLIGHT FOR THE PRESENCE OF
CRACKS OR OTHER ABNORMALITIES.
CAUTION 1: BLADES THAT HAVE BEEN PREVIOUSLY
REPAIRED OR OVERHAULED MAY HAVE
BEEN DIMENSIONALLY REDUCED. BEFORE
REPAIRING SIGNIFICANT DAMAGE OR
MAKING REPAIRS ON BLADES THAT ARE
APPROACHING SERVICEABLE LIMITS,
CONTACT A CERTIFIED PROPELLER REPAIR
STATION OR THE HARTZELL PRODUCT
SUPPORT DEPARTMENT FOR BLADE
DIMENSIONAL LIMITS.
CAUTION 2: INSTRUCTIONS AND PROCEDURES IN
THIS SECTION MAY INVOLVE PROPELLER
CRITICAL PARTS. REFER TO THE
INTRODUCTION CHAPTER OF THIS
MANUAL FOR INFORMATION ABOUT
PROPELLER CRITICAL PARTS. REFER TO
THE ILLUSTRATED PARTS LIST CHAPTER
OF THE APPLICABLE OVERHAUL
MANUAL(S) FOR THE IDENTIFICATION OF
SPECIFIC PROPELLER CRITICAL PARTS.
A. Important Information
(1) Nicks, gouges, and scratches on blade surfaces or on the
leading or trailing edges of the blade, that are greater than
0.031 inch (0.79 mm) wide or deep, must be removed
before flight.
(2) Field repair of small nicks and scratches may be performed
by qualified personnel in accordance with FAA Advisory
Circular 43.13-1B, and
the procedures specified
in this
section.
(3) Normal erosion (sand-blasted appearance) on the leading
edge of the blade is acceptable, and does not require
removal before further flight.
