AD 81-03-05

81-03-05 AVCO LYCOMING: Amendment 39-4038. Applies to all IGSO-480-A1E6 with S/Ns up to and including L-2066-44; IO-540-A1A5 with S/Ns up to and including L-19212-48; IO-540-B1C5 with S/Ns up to and including L-9631-48; IO-540-K1E5 with S/Ns up to and including L-19698-48A; IGO-540-A1A, -B1A, - B1C with S/Ns up to and including L-339-49; IGSO-540-A1A, -A1C, -A1D, -A1E, -A1H with S/Ns up to and including L-3637-50. Compliance required within the next 50 hours' in service after the effective date of this AD, unless already accomplished. To prevent fuel leakage in the mixture control shaft assembly on Bendix Model RS-10FB1, RS-10ED1, RS-10ED2, RS-10B1 and RS-10B2 fuel injectors, accomplish the following: a. Modify the mixture control shaft assembly with new parts in accordance with Bendix Service Bulletin RS-62, Rev. 1, dated 2/14/80, or FAA approved equivalent. b. All modified fuel injectors must be reidentified in accordance with instructions noted in the above Service Bulletin. Equivalent methods of compliance must be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration (FAA) Eastern Region. Upon submission of substantiating data by an owner or operator through an FAA Maintenance Inspector, The Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, may adjust the compliance time specified in this AD. Lycoming Service Bulletin No. 444 also pertains to this subject. This amendment is effective February 11, 1981.