Summary
We propose to supersede airworthiness directive (AD) 2011-26- 04 that applies to certain Lycoming Engines fuel injected reciprocating engines. AD 2011-26-04 requires inspection, replacement if necessary, and proper clamping of externally mounted fuel injector fuel lines. Since we issued AD 2011-26-04, we received revised service information which adds engine models to the applicability. This proposed AD would expand the scope of affected engine models, require inspection, replacement if necessary, and proper clamping of externally mounted fuel injector fuel lines. We are proposing this AD to prevent failure of the fuel injector fuel lines, which could lead to uncontrolled engine fire, engine damage, and damage to the airplane.