CS-E 720 Continuous Ignition

(a)Where approval of an Engine is sought which permits or requires the use of a continuously-operated ignition system, the specifications of CS-E 720(b) together with either CS-E 720(c) or (d) must be met. (See AMC E 720(a))

(b)Separate tests as agreed by the Agency must be conducted to show that continuous ignition systems are safe and effective in the conditions for which their use is permitted or required.

(c)The system must be operated during a suitable Engine endurance test for periods representative of the duration and frequency of operation of the system during likely service usage, and should be agreed by the Agency for individual cases. Generally, the schedule must include the use of continuous ignition for the maximum duration which is likely to be achieved in 1000 hours of service operation.

(d)It is acceptable to conduct an equivalent programme by appropriate rig testing, where this is possible, but in this case final confirmation of suitability of the equipment in the Engine must be obtained by running at least 10 hours (in periods of at least ½ hour duration) of an Engine endurance test with the ignition in operation at the appropriate Engine conditions.

[Amdt. No.: E/1]