67-30-02 BRITISH AIRCRAFT: Amdt. 39-507, Part 39, Federal Register November 4, 1967. Applies to Model BAC 1-11 200 and 400 Series Airplanes which incorporate Modification PM 1558 part (c).
Compliance required as indicated unless already accomplished.
To prevent fatigue damage of the lower sidestay pin retaining bolt, P/N AC43-267, accomplish the following:
(a) Within the next 200 landings after the effective date of this AD or before the accumulation of 5,000 landings, whichever occurs later, and thereafter at intervals not to exceed 5,000 landings from the last inspection, inspect the main landing gear lower sidestay retaining bolts, P/N AC43-267, for cracks, using the magnetic particle procedure or an FAA-approved equivalent, in accordance with British Aircraft Corporation BAC 1-11 Alert Service Bulletin 32- A-PM 2898, Issue 1, dated April 14, 1967, or later ARB-approved issue, or an FAA-approved equivalent.
(b) If defective retaining bolts, P/N AC43-267, are found during the inspection required by paragraph (a), before further flight replace the bolts with serviceable bolts of the same part number or new bolts, P/N AC43-399, in accordance with BAC 1-11 Service Bulletin No. 32-PM 2898 Revision 1, dated April 10, 1967, or later ARB-approved issue, or an FAA- approved equivalent.
(c) Before the accumulation of 15,000 landings, replace retaining bolts, P/N AC43- 267, with serviceable bolts of the same part number or new bolts, P/N AC43-399. If bolts P/N AC43-267 are used as replacement bolts, inspect the bolts at intervals not to exceed 5,000 landings in accordance with paragraph (a) and replace the bolts at intervals not to exceed 15,000 landings.
(d) The repetitive inspections and replacements required by paragraphs (a) and (c) may be discontinued after the new bolts, P/N AC43-399, are installed. Retaining bolt P/N AC43- 399 does not have a service life limitation.
(e) For the purpose of complying with this AD, subject to acceptance by the assigned FAA maintenance inspector, the number of landings may be determined by dividing each airplane's hours' time in service by the operator's fleet average time from takeoff to landing for the airplane type.
This amendment effective December 4, 1967.