MAINTENANCE PRACTICES
61-00-36
Page 6-13
Rev. 2 Feb/17
Propeller Owner's Manual
136
3. Blade Repairs
WARNING:
ALL 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 WITH THE
APPROPRIATE RATING OR THE HARTZELL
PROPELLER INC. 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.
Nicks, gouges, and scratches on blade surfaces or on the leading
or trailing edges of the blade, greater than 1/32 inch wide or deep,
must be removed before flight. Field repair of small nicks and
scratches may be performed by qualified personnel in accordance
with FAA Advisory Circular 43.13-1B, as well as the procedures
specified below. Normal blade lead edge erosion (sand-blasted
appearance) is acceptable, and does not require removal before
further flight.