SUBPART C — PISTON ENGINES, TYPE SUBSTANTIATION
Engines (CS-E) · CS-E
CS-E 300 Conditions Applicable to All Tests
Coolant Flow. (Applicable to liquid-cooled Engines only). Equipment must be provided to permit simultaneous observation of the coolant flow to each bank…
AMC E 300(f) Conditions Applicable to all Tests - Torque Measurement
In establishing an acceptable method for determination of the Engine torque, consideration should be given to the following:
CS-E 320 Performance Correction
(See AMC E 320) (a) All performance results shall be corrected to the conditions of the Standard Atmosphere, in accordance with an internationally…
AMC E 320 Performance correction
An acceptable method for calculating performance corrections is defined in ISO 1585:1992, Road vehicles - Engine test code - Net power.
CS-E 330 Tests - General
A single Engine must be used for all the tests except that, if so desired, the vibration, calibration, and detonation tests may be made on Engines of the…
CS-E 340 Vibration Tests
(See AMC E 340) (a) Tests by approved methods must be made on an appropriate mounting to satisfy the Agency that no dangerous torsional or flexural…
AMC E 340 Vibration Tests
Calculations during design of the engine During the design stage the applicant should make calculations to determine the vibration characteristics of the…
CS-E 350 Calibration Tests
(See AMC E 350) (a) The power characteristics of the Engine must be established, under all normal operating conditions within the declared flight…
AMC E 350 Calibration Tests
In complying with CS-E 350(a), the following calibration testing should normally be considered adequate.
CS-E 360 Detonation Tests
For spark ignition Engines: A test shall be conducted to demonstrate that the Engine can function without detonation at all operating conditions within…
CS-E 370 Starting Tests
At least 100 successful Engine starts must be made, either during or at the end of the endurance test of CS-E 440, using the normal means of starting and…
CS-E 380 Low Temperature Starting Tests
(see AMC E 380) (a) Tests shall be carried out to demonstrate that the Engine can be started under the lowest temperature conditions to be approved…
AMC E 380 Low Temperature Starting Tests
The minimum tropical and temperate sea-level temperature as defined in CS-Definitions is -20°C.
CS-E 390 Acceleration Tests
The tests of CS-E 390(a)(1) and (2) must be carried out at the end of the endurance test of CS-E 440 without heated intake air and repeated, when…
CS-E 400 Over-speed Tests
The tests of (1) and (2) shall be completed during or at the end of the endurance test of CS-E 440.
CS-E 430 Water Spray Tests
Installation Conditions. With the Engine suitably cowled or shielded to be fully representative of an installed Engine, a water spray must be applied…
CS-E 440 Endurance Test
The test must be made in the order defined in the appropriate schedule and in suitable non-stop parts.
AMC E 440(b)(3) Endurance Test - Schedule for Engine Incorporating a Turbocharger
Altitude testing may be simulated provided it is shown that the Engine and turbocharger are being subjected to mechanical loads and operation…
CS-E 450 Ignition Tests
For spark-ignition Engines: If the design of the ignition system includes redundancy, the reduction in Engine power resulting from loss of redundancy…
CS-E 460 Backfire Tests
For spark ignition Engines: After completion of the endurance test of CS-E 440, functioning tests of the Engine shall be made to determine if there is…
CS-E 470 Contaminated Fuel
(See AMC E 470) Evidence shall be provided that the complete Engine fuel system is capable of operating without Engine malfunctioning under any likely…
AMC E 470 Contaminated Fuel
In complying with CS-E 470, the following contaminant specifications and levels are considered acceptable:
Consolidated from the EASA Easy Access Rules (revision 7 Dec 2023, extracted 17 Aug 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.
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