Airworthiness Standards: Aircraft Engines; Technical Amendment

This amendment clarifies aircraft engine vibration test requirements in the airworthiness standards. The clarification is in response to inquiries from applicants requesting FAA engine type certifications and aftermarket certifications, such as supplemental type certificates, parts manufacturing approvals, and repairs. We are revising the regulations to clarify that ``engine surveys'' require an engine test. The change is not substantive in nature, and will not impose any additional burden on any person.

Agency Contact: For technical questions concerning this action, contact Dorina Mihail, Federal Aviation Administration, Engine and Propeller Directorate, Standards Staff, ANE-110, 12 New England Executive Park, Burlington, Massachusetts 01803-5229; (781) 238-7153; facsimile: (781) 238-7199; email: dorina.mihail@faa.gov.