NPA 2017-16

Engine bird ingestion

The objective of this Notice of Proposed Amendment (NPA) is to improve the ability of aeroplane turbine engines to cope with the ingestion of birds that can reasonably be expected to be experienced during the service life of the engine.

This NPA proposes to amend the certification specifications for engines (CS-E) aeroplane turbine engine bird ingestion demonstration provisions in CS-E to include an additional requirement to continue to operate following the ingestion of a medium-sized bird into the engine core with a fan speed that is representative of the climb condition (or approach condition if no bird material is ingested into the engine core during the test).

The proposed changes are expected to improve safety and maintain alignment with FAA Part 33.