CS-E 830 Maximum Engine Over-speed

(a)If approval of a Maximum Engine Over-speed is sought for a rotating system of the Engine, a test must be undertaken on a complete Engine. Alternatively, test evidence from an Engine of similar design may be provided.

(b)The test conditions must be as follows:

(1)A total of 15 minutes run at the Maximum Engine Over-speed to be approved. This may be done in separate runs, each being of at least 2.5 minutes duration.

(2)A turbine-entry gas temperature equal to the maximum steady state temperature to be approved for use during periods longer than 20 seconds and not associated with 30-Second or 2-Minute OEI Power Ratings. However, for the shaft system to be approved, if the maximum over-speed cannot occur at the maximum turbine-entry temperature, the highest temperature which could occur at the conditions of Maximum Engine Over-speed must be used.

(3)The declared maximum operating oil temperature.

(c)On conclusion of such tests, the stripped condition of the Engine must be satisfactory for continued running. (See AMC E 830(c))

(d)The test may be run, if desired, as part of the endurance test of CS-E 740 provided the conditions of CS-E 830(b) are satisfied.

[Amdt No: E/1]