ED Decision 2026/009/R

Regular update of CS-E — CS-E Amendment 9

CS-E Amendment 9

This Decision amends CS-E to reflect the state of the art in engine certification, improve harmonisation of CS-E with the Federal Aviation Administration (FAA) regulations, and make certain editorial corrections. 
To that end, amendments have been made regarding the following: 
—    turbine-engine transient over-temperature, over-speed and over-torque limit approval; 
—    turbine-engine medium bird strike and ingestion — additional integrity assessment; 
—    deletion of references to CS-34; 
—    safety analysis for turbine engines; 
—    vibration and endurance tests of piston engines installed on rotorcraft; 
—    propeller blade pitch control system components as part of engine type design; 
—    engine control system development errors; 
—    turbine-engine thrust or power rating achieved during the endurance test; 
—    editorial corrections. 
The regulatory material is intended to improve safety, creates no social or environmental impacts, and provides some economic benefits by streamlining the certification and validation process.