AD 66-19-01

66-19-01 BRITISH AIRCRAFT: Amendment 39-265 Part 39 Federal Register July 26, 1966 as amended by Amendment 39-3121. Applies to Model BAC 1-11 Series Airplanes.

Compliance required as indicated.

To prevent fatigue damage to the rudder control system components, accomplish the following:

(a) Within the next 3,000 hours' time in service after the effective date of this AD, unless already accomplished, rework rudder jacks to provide a shorter stroke in accordance with British Aircraft Corporation (BAC) One-Eleven Alert Service Bulletin 27-A-PM 1715 or later ARB-approved issue, or an equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, Middle East Region.

(b) Within the next 100 hours' time in service after the effective date of this AD or before the accumulation of 3,000 hours' time in service, whichever occurs later, and thereafter at intervals not to exceed 3,000 hours' time in service from the last replacement, replace ram rod eye end assemblies, P/N's P.183.45.65 and P.183.45.339, of the rudder power flying control unit on Series 200 airplanes only.

(c) Within the next 100 hours' time in service after the effective date of this AD or before the accumulation of 10,000 hours' time in service, whichever occurs later, and thereafter at intervals not to exceed 10,000 hours' time in service from the last replacement, replace ram rod eye end assemblies, P/N P.183.45.363, of the rudder power flying control unit that have been operated with premodification PM1715 (Mark 1) rudder jacks installed.

(d) Within the next 100 hours' time in service after the effective date of this AD or before the accumulation of 30,000 hours' time in service, whichever occurs later, and thereafter at intervals not to exceed 30,000 hours' time in service from the last replacement, replace ram rod eye end assemblies, P/N P.183.45.363, of the rudder power flying control unit that are installed with post-modification PM1715 (Mark 2) rudder jacks.

(e) For a ram rod eye end assembly, P/N P.183.45.363, which has expended part of its life on pre-modification PM 1715 (Mark I) rudder jacks, determine the remaining life of the ram rod eye end on a post-modification PM 1715 (Mark II) rudder jack on a pro-rata basis by which the established life limit for the part as installed on the post modification PM 1715 rudder jack is reduced by the percentage of the life limit expended prior to incorporation of modification PM 1715.

Amendment 39-265 became effective August 25, 1966.

This amendment 39-3121 becomes effective January 23, 1978.