CS-E 400 Over-speed Tests

• ED Decision 2003/9/RM found in: CS-E Amdt 5 - Engines (Dec 2018)

CS-E 400 Over-speed Tests ED Decision 2003/9/RM (a) The tests of (1) and (2) shall be completed during or at the end of the endurance test of [CS-E 440](#_DxCrossRefBm1371447623). (1) All Engines, except two-speed supercharged Engines. 20 runs, each of 30 seconds duration, at the declared Maximum Engine Over-speed or at a speed 5% in excess of the declared maximum Engine rotational speed, whichever is greater. The power setting for these runs shall not be less than that declared for the Maximum Continuous rating. (2) Two-speed Supercharged Engines. 20 runs, each of 30 seconds duration, at the declared Maximum Engine Over-speed or at a speed 5% in excess of the declared maximum Engine rotational speed, whichever is the greater, 10 with the supercharger in low gear and 10 with the supercharger in high gear. The power setting for these runs shall not be less than that declared for the Maximum Continuous rating. (b) A further test consisting of a total of 10-minutes run in stages of not less than one minute shall be made at the declared Maximum Over-speed or at a speed not less than 5% in excess of the declared maximum Engine rotational speed, whichever is greater. The power for this test shall be not greater than 30% Take-off Power. The oil inlet temperature shall be within 30°C of the declared maximum temperature for take-off. This test may be run on a dynamometer.