86-16-10 CANADAIR: Amendment 39-5378. Applies to all Canadair CL-44D4 and CL-44J airplanes certificated in any category. Compliance required as indicated, unless previously accomplished.
To prevent failure of the aft attachment lugs on the main landing gear upper forging, P/N 44-87573-2, accomplish the following, unless already accomplished.
A. Within the next 30 days after the effective date of this Airworthiness Directive (AD), and at intervals thereafter not to exceed 2000 hours time-in-service or one year, whichever occurs first:
1. Remove the parts shown in Figure 1 of Canadair Service Information Circular (SIC) No. 419-CL44, dated May 18, 1978, from both main landing gear legs: jack attach bracket assemblies, P/N 44-87593; spacers, P/N 44-87639; pins, P/N 44-87725-2; attaching parts, and bushings, P/N 44-87624-2, if necessary.
2. Inspect the bore of the upper and lower jack attachment lugs of the left and right main gear leg upper forgings, P/N 44-87573-2, for cracks, using fluorescent penetrant procedures.
3. Replace cracked parts, prior to further flight, with serviceable parts of the same part number which have been inspected in accordance with the requirements of this AD.
B. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, New York Aircraft Certification Office, FAA, New England Region.
C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of the inspections and replacement of parts required by this AD.
D. Upon the request of an operator, an FAA Maintenance Inspector, subject to approval by the Manager, New York Aircraft Certification Office, FAA, New England Region, may adjust the inspection times specified in this AD to permit compliance at an established inspection period of that operator if the request contains substantiating data to justify the change for that operator.
All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Canadair Limited, Commercial Aircraft Technical Services, Box 6087, Station A, Montreal, Quebec H3C 3G9, Canada. These documents may be examined at FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or FAA, New England Region, New York Aircraft Certification Office, 181 South Franklin Avenue, Valley Stream, New York.
This Amendment becomes effective September 8, 1986.