71-06-08 CLEVELAND AIRCRAFT PRODUCTS: Amendment 39-1173 as amended by Amendment 39-1221. Applies to Cleveland Aircraft Products, Division of Van Sickle Industries, 6.00-6 wheel/brake assembly, P/N 3080C/37-200A.
Compliance required as indicated.
To prevent failure of the brake, due to separation of the brake disc assembly, P/N 164-32, at the weld area, accomplish the following:
(a) Within the next 25 hours in service, after the effective date of this AD, or within 50 hours since the last brake inspection conducted pursuant to this paragraph, whichever comes later, unless the alteration of paragraph (c)(1) has been accomplished, perform the following inspection:
Remove wheel assembly, P/N 3080C from the aircraft and inspect the brake disc assembly, P/N 164-32, for cracks in the weld attaching the disc to the cup, using a 10-power glass or other FAA-approved equivalent means. If any cracks or other obvious defects are found, replace the disc assembly as indicatedin paragraph (c).
(b) Until the alteration of paragraph (c)(1) is accomplished, repeat the procedure of paragraph (a) each 50 hours in service after the last inspection.
(c) At next brake overhaul or brake disc replacement,
(1) Replace brake disc, P/N 164-32, with one-piece brake disc, P/N 164-32F, in accordance with Cleveland Service Bulletin No. ESB 7000-2, Rev. (A) 251-2, dated 15 January 1971, or equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, Jamaica, New York, or
(2) If disc, P/N 164-32F, is not available at the time replacement is necessary, replace with disc, P/N 164-32, manufactured subsequent to 23 May 1969. (This wheel and brake assembly installed on Piper PA-23-250 airplanes among others.)
Upon submission of substantiating data through an FAA Maintenance Inspector, by an owner or operator, the Chief, Engineering and Manufacturing Branch, may permit compliance at an established inspection periodof the owner or operator.
Amendment 39-1173 was effective March 19, 1971.
This Amendment 39-1221 is effective June 8, 1971.