64-24-04 MCCAULEY: Amdt. 822 Part 507 Federal Register October 20, 1964. Applies to McCauley Constant Speed Models 2A36, B2A36, C2A36, D2A36, 2D36 Series Propellers Installed on Various Single-Engine Tractor-Type Aircraft Except Propellers with Blade Serial Numbers with a "K" prefix Above Serial Number K25150 and to All Propellers with a "Y" Following the Blade Serial Number. Also Excluded Are All Propellers with Blades with Plain Serial Numbers Above 27064 and Below 21298. (A Plain Serial Number is One Without a Prefix or Suffix Letter.)
These may be found on such aircraft as Bellanca 14-19-2, 14-19-3; CallAir A-6; Cessna 180 Series, 182 Series, 185 Series, 210 Series, 305B, 321; Cessna 172 "Doyn" Conversion; Fletcher FU-24 Series; Lockheed 402-2; Meyers 200, 200A; Mooney Mark 20A, 20B, 20C; Navion B, D, E, F, G; Piper PA-24-180, PA-24-250; and Taylorcraft 20.)
Compliance required as indicated.
Because of the occurrence of cracks in the blade threaded shank on several propellers, accomplish the following:
(a) Propellers with affected blades not having accumulated the maximum time listed in Table II-C of McCauley Service Bulletin No. 48-C dated July 6, 1964, before the effective date of this AD and which have not been previously inspected in accordance with AD 63-8-4 shall be equipped with new blades prior to the accumulation of 100 hours' time in service after the accumulation of the maximum time in service listed in Table II-C of McCauley Service Bulletin No. 48-C dated July 6, 1964.
(b) Propellers with affected blades having accumulated a total time in service less than 1,000 hours when inspected in accordance with AD 63-8-4 and having accumulated less than 75 hours over the total service hours listed in Table III-C of McCauley Service Bulletin No. 48-C dated July 6, 1964, on the effective date of this AD shall be equipped with new blades prior to the accumulation of 100 hours' time in service over the total service hours listed inTable III-C.
(c) Propellers with affected blades having accumulated a total time in service less than 1,000 hours when inspected in accordance with AD 63-08-04 and having accumulated more than 75 hours over the total service hours listed in Table III-C of McCauley Service Bulletin No. 48-C dated July 6, 1964, on the effective date of this AD shall be equipped with new blades within the next 25 hours' time in service.
(d) Propellers with blades having accumulated a total time of less than 1,000 hours when inspected in accordance with AD 63-08-04 and which have not accumulated the maximum time in service listed in Table III-C of McCauley Service Bulletin No. 48-C dated July 6, 1964, on the effective date of this AD shall be equipped with new blades prior to the accumulation of 100 hours' time in service after the accumulation of the maximum time in service listed in Table III-C of McCauley Service Bulletin No. 48-C dated July 6, 1964.
(e) Propellers with blades having accumulated a total time in service of 1,000 hours or more when inspected in accordance with AD 63-08-04 shall be equipped with new blades at the next propeller overhaul, or prior to the next 1,000 hours after the last blade thread inspection, whichever occurs first.
(f) Identification of propeller blade serial numbers shall be determined in accordance with McCauley Service Bulletin No. 48-C dated July 6, 1964.
(McCauley Service Bulletin No. 48-C dated July 6, 1964, including Supplemental Revisions, and Service Manual 620215 cover this same subject.)
This supersedes AD 63-08-04.
This directive effective November 20, 1964.