I've just been a good little citizen and gone and got myself a Mode S Transponder - a Filser TRT800 to be precise - I believe several hundreds of which are already in service throughout Europe.
Except there seems to be a problem and the Mod has so far not been approved by the CAA.
Word is that they 'sometimes' don't respond in busy TMA environments.
Anyone else got one fitted/approved, and anyone else got any problems or tales to tell ?
Mr Not Happy