--- title: "AMC E 30 Assumptions — CS-E · Avioverse" description: "The details required by CS-E 30 concerning assumptions should normally include information on, at least, the items listed in Table 1." url: "https://avioverse.aero/regulations/easa/cs-e/subpart-a/amc-e-30-assumptions" --- # AMC E 30 Assumptions Engines (CS-E) · CS-E · EAR revision 7 Dec 2023 AMC Acceptable means of compliance ## AMC E 30 Assumptions The details required by CS-E 30 concerning assumptions should normally include information on, at least, the items listed in Table 1. TABLE 1 | Specifications/References | Assumptions | | ------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | ALL ENGINES | | | Interfaces CS-E 20 | Applicable aircraft specifications. Flight and ground loads. Aircraft components and equipment not included in the Engine definition. Attitudes. Negative g duration. Physical and functional interfaces with the aircraft Mount flexibility. | | Engine Control System CS-E 50 | Type of aircraft installation. Conditions on the interfaces with the aircraft or the Propeller Environmental Conditions. | | Instrumentation CS-E 60 | Instrumentation required and statement of accuracy. For engines with 30-Second / 2-Minute OEI ratings, conditions imposed on the usage recording system. | | Strength CS-E 100 CS-E 520, CS-E 640 | Ultimate and limit loads; – out-of-balance loads, – operating envelope. | | Fire precautions CS-E 130 | Reliance placed on the installation of fire-zone partitioning for any part of the mounting structure or Engine attachment points that are not Fireproof. | | Electrical Bonding CS-E 135 | Reliance placed on aircraft provisions for electrical bonding of the Engine. | | Propeller Functioning Tests CS-E 180 | Propeller system. Levels of the Propeller vibrations. | | Failure Analysis CS-E 210, CS-E 510 | Installation aspects and the assumptions made with respect to any safety system that is required for the Engine and which is outside the applicant’s control. | | Low Temperature Starting Tests, CS-E 380, E 770 | Minimum and maximum starting torque. | | TURBINE ENGINES | | | Freedom from surge CS-E 500 | Operating envelope, i.e. altitude, temperature, aircraft speed. Permissible intake distortion. | | Low-cycle fatigue CS-E 515 | Engine Flight Cycle. | | Continued Rotation CS-E 525 | Aircraft conditions such as airspeed, flight duration and ambient conditions. | | Fuel System CS-E 560 | Fuel Specifications approved for use. Need for aircraft fuel anti-ice means or fuel with anti-ice additives. Assumptions made with respect to the maximum levels of contamination in the fuel supplied to the Engine. | | Oil system CS-E 570 | Oil(s) approved for use. Engine maximum allowable oil consumption, to enable the installer to show compliance with the aircraft certification specifications on oil systems. Note: when separate oil systems exist, the respective maximum allowable oil consumptions. | | Starter System CS-E 590 | Reliance placed on aircraft provisions for any safety system that is outside the applicant’s control. | | Vibration Surveys CS-E 650 | Intake conditions, exhaust conditions. Propeller or thrust reverser effects. | | Contaminated Fuel CS-E 670 | Duration of flight with contaminated fuel following indication of impending filter blockage, and critical temperature for test of AMC E 670 paragraph 2. | | Inclination and Gyroscopic Loads Effects CS-E 680 | Flight manoeuvres. | | Excess Operating Conditions CS-E 700 | Operating envelope. | | Rotor Locking Test CS-E 710 | Maximum torque from continued flight. | | Thrust or power response CS-E 745 | Minimum ground idle. Minimum flight idle. Flight envelope. | | Icing Conditions CS-E 780 | Intake conditions and configuration. Aircraft speeds and appropriate Engine powers. Engine ingestion capabilities. | | Ingestion of Rain and Hail CS-E 790 | Aircraft speeds, Engine speeds and altitudes. Intake throat area – Intake configuration. | | Bird strikes CS-E 800 | Aircraft speeds, Engine speeds and altitudes. Intake throat area – Intake configuration. | | Relighting in Flight CS-E 910 | Flight relighting envelope. | | PISTON ENGINES | | | De-icing and anti-icing CS-E 230 | Temperature rise provided. | | Filters CS-E 260 | Provision to be made in installation. | | Vibration Tests CS-E 340 | Propeller used. | | Water Spray Tests CS-E 430 | Installation details. | \[Amdt No: E/1] \[Amdt No: E/4] \[Amdt No: E/5] AMC — CS-E · ED Decision 2018/014/R · CS-E Easy Access Rules · EAR revision 7 Dec 2023 [All rules in SUBPART A – GENERAL](https://avioverse.aero/regulations/easa/cs-e/subpart-a) Consolidated from the EASA Easy Access Rules (revision 7 Dec 2023, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.