I rang the CAA for guidance yesterday, having failed to get a test arranged for one of our pilots. The guy on the telephone could not get the answer and asked me to EMail the Policy Dept.?
So far, an automated reply apologising that a reply to EMails may not be available for up to 30 days.
PS I still find it perverse that a test can be mandated on a piece of equipment not legally required in the aircraft. (ADF)