69-20-02 MAULE AIRCRAFT CORPORATION: Amdt. 39-846. Applies to the following models:
M-4, M-4T, M-4C, M-4S, M-4-210, M-4-210C, M-4-220C. The following are affected serial numbers:
M-4, Serial Nos. 3 through 94
M-4T, Serial Nos. 1T through 3T
M-4C, Serial Nos. 1C through 11C
M-4S, Serial Nos. 1S through 3S
M-4-210, Serial Nos. 1001 through 1045
M-4-210C, Serial Nos. 1001C through 1075C, 1079C, 1080C
M-4-220C, Serial Nos. 2001C through 2029C, 2032C
Compliance required within the next 25 hours' time in service after the effective date of this airworthiness directive unless already accomplished.
To prevent the most forward aileron control system pulley, mounted on the lower portion of the control column, from separating from its bearing, accomplish the following:
Remove the bolt attaching the most forward aileron control system pulley to the control column. Replace pulley assembly with the addition of washers AN 970-5 and AN 960-516 and an AN 5-27 bolt instead of the original bolt in the following order from front to rear:
1. AN 5-27 bolt, head forward.
2. AN 970-5 washer.
3. AN 960-516 washer.
4. Original pulley.
5. Control column.
6. AN 960-516 washer.
7. AN 365-524 nut
or equivalent approved by Chief, Engineering and Manufacturing Branch, FAA Southern Region.
Maule Service Letter No. 19, dated September 4, 1969, covers this same subject.
This amendment becomes effective September 30, 1969.