Hartzell HC-E4 3 Series Owner's Manual page 197

(3) Check blade track as follows:
NOTE: An accurate blade track inspection cannot be
accomplished with the propeller in feather
position.
CAUTION:
(a) Chock the aircraft wheels securely.
(b) Refer to Figure 5-4. Place a fixed reference point
beneath the propeller, within 0.25 inch (6.4 mm) of the
lowest point of the propeller arc.
NOTE:
(c) Rotate the propeller by hand in the direction of normal
rotation until a blade points directly at the paper.
(d) Mark the position of the blade tip in relation to the
paper.
(e) Repeat this procedure with the remaining blades.
(f) Tracking tolerance is ± 0.125 inch (3.18 mm) or
0.25 inch (6.4 mm) total.
(4) Possible Correction
(a) Remove foreign matter from the propeller mounting
flange.
1 Examine the engine and propeller flanges for
damage.
2 Repair any damage to the engine or propeller
flange. If necessary, refer to an appropriately
rated propeller repair station that is certified by
the Federal Aviation Administration (FAA) or
international equivalent.
(b) If no foreign matter is present, refer to a certified
propeller repair station with the appropriate rating.
INSPECTION AND CHECK
Propeller Owner's Manual
FOR -5 TURBINES ONLY, MAKE SURE
THAT THE ENGINE WAS SHUT DOWN
WITH THE PROPELLER ON THE
LATCHES.
This reference point may be a flat board
with a sheet of paper attached to it. The
board may then be blocked up to within
0.25 inch (6.4 mm) of the propeller arc.
61-00-47
147
Rev. 17 Sep/20
Page 5-27