offsets for engine start flick back

[trevorwimmer]

Hi,

This is my first post in this forum, and was wondering if there is an offset that can be used to trigger a solenoid when the engine reaches 36% N2 to return the starter switch from the Gnd position to the off position after engine light off?

Kind regards

Trevor Wimmer

B737NG

Australia

[Pete Dowson]

... if there is an offset that can be used to trigger a solenoid when the engine reaches 36% N2 to return the starter switch from the Gnd position to the off position after engine light off?

The normal way is to check the combustion flag for the respective engine (e.g. 0894 for Engine 1), but of course you can check N2 if you prefer or if that is more correct. I'm sure you can find all these things for yourself if you have downloaded the SDK? Engine 1's N2% is at offset 0896, 36% would be 5898 there as 100% is represented by 16384. The starter switch position is at 0892. There are equivalent offsets for the other three engines.

Pete