85-06-02 BF GOODRICH: Amendment 39-5015. Applies to BF Goodrich Main Landing Gear Wheel Assemblies, P/N's 3-1311-3, 3-1365, 3-1365-1, 3-1365-2, 3-1375, 3-1375-1, 3-1375-2, and 3-1375-3 installed on Lockheed L-1011 airplanes; and P/N's 3-1287, 3-1306, 3-1306-1, and 3-1414 installed on Boeing Model 727 airplanes. \n\n\tCompliance is required as indicated, unless already accomplished. To prevent failure of certain BF Goodrich wheel assemblies, due to tie bolt nut cracks, accomplish the following: \n\n\tA.\tAs of the effective date of this AD, no P/N 63-347B RX3 tie bolt nuts shall be used in wheel build up. \n\n\tNOTE: It is recommended that tie bolt nuts marked as above must be destroyed or returned to BF Goodrich. Refer to procedures outlined in Paragraph 2A, BF Goodrich Service Bulletin 439 (for L-1011 airplanes) or Service Bulletin 440 (for Boeing Model 727 airplanes), both issued February 5, 1985. \n\n\tB.\tWithin 50 flight hours after the effective date of this AD, inspect the applicable main wheel assemblies for cracked tie bolt nuts. Adhere to the procedures outlined in Paragraphs 2D and 2E of BF Goodrich Service Bulletin 439 or Service Bulletin 440, as applicable. Any tie bolt nuts found to be cracked must be replaced before further flight. \n\n\tC.\tWithin 60 days following the effective date of this AD, remove all -RX3 tie bolt nuts from service and replace with serviceable parts. \n\n\tD.\tAlternate means of compliance with this AD which provide an acceptable level of safety may be used when approved by the Manager, Chicago Aircraft Certification Office, FAA, Central Region. \n\n\tE.\tSpecial flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD. \n\n\tAll persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to BF Goodrich Company, Attn: Mr. C. F. Wintrow,P.O. Box 340, Troy, Ohio 45373; telephone (513) 339-3811. These documents also may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington. \n\n\tThis amendment becomes effective March 19, 1985.