CS-E 870 Exhaust Gas Over-temperature Test

(a)General

(1)Where the Applicant wishes to establish a Maximum Exhaust Gas Over-temperature limit compliance must be shown with this paragraph CS-E 870.

(2)The test may be run, if desired, as part of the endurance test of CS-E 740. Alternatively, test evidence may be provided from an Engine of the same type.

(3)On conclusion of the tests, the stripped condition of the Engine must be satisfactory for continued running. (See AMC E 870(a)(3))

(b)Test Conditions

(1)A 15-minute period at Maximum Exhaust Gas Over-temperature must be run with each spool of the Engine which could be significant to the test, at the maximum speed to be approved (excluding the Maximum Engine Over-speed (20 Second)).

(2)Where desired, the test may be made up of separate runs giving a total time of 15 minutes, the time of each individual run being no less than 2½-minutes.

[Amdt No: E/1]