Action
Notice of proposed rulemaking (NPRM).
Summary
We propose to adopt a new airworthiness directive (AD) for all Austro Engine GmbH model E4 engines. This proposed AD was prompted by reports of several power loss events due to fracture of the waste gate controller lever. This proposed AD would require removing from service certain part number (P/N) waste gate controllers. We are proposing this AD to prevent engine power loss or in-flight shutdown, which could result in loss of control and damage to the airplane.