Challenge and Response Checklist Question
I am in the process of writing a normal checklist for a twin engined, two crew helicopter and would like some guidance on the printed format of the response side of the checklist.
Most items have a simple response; "Brakes.....OFF" for example.
If the check item has variable solutions such as "Radios & Navaids", I would use the response "SET"
If the item is, for example, "Anti Icing" when the item may require to be switched on or off depending on conditions, is it normal in the fixed wing world for the response to be printed "AS REQUIRED", "SET" or "ON/OFF" ? I am of the view that the printed text should reflect as close as possible to what the allowed responses could be therefore in the above case should be "ON/OFF" as these are the only two options.
I have searched for an authoritative source on checklist protocols with no success and would appreciate any pointers to such a reference. My company is trying to standardise checklist protocols on our various fleets and would like to conform to the correct standard - if there is one !