tower controller he would hold over Mackay at in case visibility improved. At 8:40 pm they reported they were over the airport. It was a bright moonlit night with a completely calm sea and two approaches were aborted due to a low layer of cloud on the coastline obscuring the sight of the strip on final approach. By 10 pm, the fog was thinning. Air traffic controller Miskell reported this to VH-TFB, and Captain Pollard said they would begin an approach to the airport. Miskell reported the airport conditions. Pollard acknowledged the transmission. Miskell then telephoned the airport fire service for the latest ground temperature. It was 55.4 degrees Fahrenheit (13 degrees Celsius.) Miskell immediately reported this to VH-TFB. This time, there was no acknowledgement. Miskell transmitted again, noting the time was 10:05pm, and again there was no reply. At 10:10 pm, Miskell started the procedure for launching a search and rescue operation. Immediate aftermath Five hours after the accident, at about 3 am on the morning of Saturday, 11 June 1960, a searchlight-equipped motor launch found items of wreckage, including damaged passenger seats, clothing and cabin furnishings, floating on the ocean between Round Top Island and Flat Top Island, five nautical miles due east of Mackay Airport. A navy survey ship, HMAS Warrego, was sent to search for the sunken wreckage, and arrived on Sunday, 12 June 1960. At 4:20 pm that afternoon, Warrego discovered the major sections of VH-TFB in of water, a further south-west of Round Top Island (or about south-east of Mackay Airport). Salvaging the wreck took another two weeks. Investigation A Board of Accident Inquiry was appointed on 29 July 1960; after allowing the investigators to sift the wreckage, it finally opened on 4 October 1960. The board sat for four days in Brisbane and two more in Mackay, before concluding on 10 November 1960. The Board was chaired by Mr Justice Spicer of the Commonwealth Industrial Court. The inquiry did not determine a particular cause. The aircraft had flown into the ocean for no apparent reason, and so the board focussed on the altimeter. One possibility was that the static pressure system or altimeter was malfunctioning and not allowing display of the correct altitude. Another possibility was that the reading of the three-pointer altimeter was misinterpreted. This type of altimeter has individual pointers for thousands, hundreds and tens of feet, and can be difficult