2020-22-14
FR doc 2020-24539 · 85 FR 70442AD 2020-22-14Published 2020-11-05Effective 2020-12-10
Supersedes 2018-07-16
Supersedence is read from the Federal Register text of the newer AD — the FAA publishes no structured field for it — and names only ADs held in our index.
Requires engine modification by installing a waste gate control-rod fail-safe bridge and new spring- loaded circlip that terminates the initial and repetitive replacement requirements of AD 2018-07-16.
Full official abstract
The FAA is superseding Airworthiness Directive (AD) 2018-07-16 for all Austro Engine GmbH model E4 and E4P diesel piston engines. AD 2018-07-16 required initial and repetitive replacement of the waste gate controller and the control rod circlip. This AD retains the requirements of AD 2018-07-16 and requires engine modification by installing a waste gate control-rod fail-safe bridge and new spring- loaded circlip that terminates the initial and repetitive replacement requirements of AD 2018-07-16. This AD was prompted by the development of a modification of the waste gate control rod by adding a fail-safe bridge and spring-loaded circlip. The FAA is issuing this AD to address the unsafe condition on these products.