A recently discovered map in the Public Records Office in Kew showing all the proposed Imperial Air Routes has uncovered some interesting unknown finds. The map is dated "Air Routes 1931" but it is suspected that this is a future proposal of sites, probably issued around August September 1930, prior to the loss of the R101 and when many decision had been made regarding the next phase of the Airship Programme.

On of the locations which was shown was the proposal of a mast in Keeling Island in the middle of the Indian Ocean, but also close proximity to Sumatra. The mast is in a strategic location in the Middle of the Indian Ocean, which would be suitable to service the later ships and in the trade winds from South Africa to Australia. Part of this route is already shown in the proposals made in 1926, and the length of the route would have only been capable by ships of the R102 class. Nothing more is known of the Keeling Island mast, and it is unknown whether the Imperial Air commission stopped off there en route from South Africa to Australia in 1927. The mast could also service those airships travelling down from Bombay, Colombo to Perth in Australia, as it sits on a geographic line directly south east connecting those locations.