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NT Heritage Assessment
G4M1 Betty Tail T-361

by Bob Alford, 2005

'In 1988 the author visited the site as part of a survey of WWII sites for the Museums and Art Galleries Board of the NT and later accompanied Cyril Molyneux [former 2IC of the West Point Battery on Cox Peninsula - B.A.] on a visit to this and the West Point and Waugite Battery sites. During these and a number of visits a number of data plates and inscriptions were located on various items of the remaining wreckage and these were recorded and sent away to contacts in Australia, America and Japan for translation.

From the responses, data plates collected from a range of components revealed that they were all manufactured in the Japanese calendar year, Showa 16, that is, 1941. From them a timeline of the aircraft's history was determined as follows:

· From a data plate from a tank or similar was manufactured by Mitaka Aircraft Industries Ltd for use on a 12-Experimental Land Based Attack Aircraft as Part No. 2069-A, Serial No. 134. The test pressure was 1.8kg/cm² and empty weight 0.710 kg. An inspection stamp bearing an anchor confirmed it to be for a naval aircraft and that it was inspected on 1 April 1941.

· From a structural member a stamping (Chi 232 Otsu 0.8 m/m, Showa 16 3) on the aluminium showed it was manufactured as a curved part of 8mm thickness at Koga in Ibaraki Prefecture near Nagoya in March 1941.

· From an instrument data plate the information obtained was that it was manufacture by the Tokyo Tanaka Co. in September 1941. (see Appendix B)

· From and instrument data plate the information obtained was that it was manufactured by the Tokyo Denki Co. Electric in October 1941.

· From a data plate thus far not translated, but from a component with serial number 12153, the date of manufacture of September 1941

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