FLIR's off the CASA on a Cessna. Are you serious. The Cessna can barely pull itself along. The ground clearance required is not possible with the Cessna and it would throw out the weights and balance for the C of G into the twilight zone. The only possible use could be on the EC135's or AB139 if it could be done. It would require a serious modification to any aircraft to support the weight of the FLIR assembly for flight and you would also have to get approval from the aircraft manufacturer as it could effect the type certification from the relevant countries Airworthiness Authority.