Propeller Owner’s Manual
139
MAINTENANCE PRACTICES
61-00-39
Page 6-23
Rev. 17 Apr/20
(6) Aluminum Blades Only:
(a) Apply an approved corrosion preventative coating to
the bare aluminum surface of the blade in accordance
with the manufacturer’s instructions.
1 Oakite 31, Chromicote L-25, or Alodine 1201 are
approved chemical conversion coatings.
(7) Apply masking material for the erosion shield, anti-icing or
de-ice boot, and tip stripes, as needed.
WARNING:
FINISH COATINGS ARE FLAMMABLE
AND TOXIC TO THE SKIN, EYES AND
RESPIRATORY TRACT. SKIN AND EYE
PROTECTION ARE REQUIRED. AVOID
PROLONGED CONTACT. USE IN A WELL
VENTILATED AREA.
CAUTION:
APPLY FINISH COATING TO UNIFORMLY
COVER THE REPAIR/EROSION. AVOID
EXCESSIVE PAINT BUILDUP ALONG THE
TRAILING EDGE TO AVOID CHANGING
THE BLADE PROFILE AND/OR P-STATIC
CHARACTERISTICS.
(8
) Apply a sufficient
amount of
finish coating to achieve
2 to 4 mils thickness when dry.
(a) Re-coat before 30 minutes, or after 48 hours.
(b) If the paint is permitted to dry longer than 4 hours, it
must be lightly sanded before another coat is applied.
(9) Remove the masking material from the tip stripes and
re-apply masking material for
the tip stripe refinishing if
required.
(10
) Apply sufficient tip stripe coating to achieve 2 to 4 mils
thickness when dry.
(a) Re-coat before 30 minutes, or after 48 hours.
(b) If the paint is permitted to dry longer than 4 hours, it
must be lightly sanded before another coat is applied.
(11) Remove the masking material immediately from the
anti-icing or de-ice boot and tip stripes, if applicable.
(12) Optionally, perform dynamic balancing in accordance with
the procedures and limitations specified in the Dynamic
Balance section of this chapter.