Mr. Diarmuid Ó Conghaile:

One of the recommendations of the AAIU on this matter was that the routes used by aircraft routinely, namely, those routes programmed into the flight monitoring system, should specify minimum altitude conditions. What occurred on the night of the R116 tragedy was that the crew were flying a company-specified route and were not aware that at the altitude the aircraft was flying, the route would bring them into collision with the island.