walter
1. There was no Controller of Aircraft Release for the use of PRC 112 in British Military Aircraft.
2. There was, therefore, no clearance for PRC 112 to be used in the Chinook Mk2 of the Royal Air Force.
3. If, despite this, it could be proved that the Pilots agreed to carry out a PRC 112 assisted "Fly By" on the Mull that day; then there will be few (if any) contributors to this thread who would dissent with the Finding of Negligence.