Service Instruction No. 1285 F
Non-Destructive Testing of Lycoming Engine Parts
Supersedes Service Instruction No. 1285D and Supplement No. 1 to Service Instruction No. 1285D
July 18, 2017
All Lycoming engines
TIME OF COMPLIANCE
During engine overhaul or as required
REASON FOR REVISION
Revised NOTICE on page 2 regarding grit blast medium
This Service Instruction includes a directive advising not to use visible dye in Non-Destructive Testing (NDT) because it can adversely affect future results of NDT. This Service Instruction also identifies the necessary personnel qualifications and inspection procedure requirements for NDT to be done on Lycoming engine components. The purpose of the NDT is to identify the presence or potential of structural failures in an engine component. Non-destructive testing within the context of this Service Instruction includes Magnetic Particle Inspection and Fluorescent Penetrant Inspection.
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