. While PNG94 is the mandated geodetic datum for all new surveys conducted in PNG, some PNG legislation (e.g. Mining and Oil & Gas) still refers to AGD66 as the legal geodetic datum for reporting of coordinates and lease boundaries. The PNG Oil and Gas leglislation identifies AA 070 Bevan Rapids as the geodetic origin for AGD66 in Papua New Guinea. It is defined as follows: AGD66 is still required for well location reporting and lease boundary definition by PNG Oil and Gas legislation. The existing 1:100,000 topographic map sheets are still defined in terms of AGD66, however these maps will be updated to PNG94/WGS84 in the near future (2015). AGD66 is also still used on projects commenced before 1998. AGD66 is not recommended for any other purpose as it is now superseded by PNG94 AGD66 to PNG94 coordinate transformation parameters are currently only estimated for the PNG Mainland, the Papuan Fold and Thrust Belt Area (PFTB) and the North Fly Area. The listed parameters are all traceable to the AGD66 geodetic origin AA 070 at Bevan Rapids in Gulf Province. The PFTB is the location of the main PNG oilfields (Hides, Kutubu, Gobe, Purari). PFTB parameters are valid between Latitude -5.59 deg and -8.28 deg and Longitude 142.24 deg and 144.75 deg. The North Fly area is the location of the Ok tedi mine and Stanley/Elevala gas fields. The North Fly parameters are valid between Latitude -5.04 deg and -6.36 deg and west of Longitude 141.32 deg to the PNG border. The 7 parameter PFTB and North Fly transformations are recommended for use in those areas. Accurate parameters for other PNG islands will be estimated once more surveys on AGD66 primary control on those islands are completed. Important usage note: The rotation convention used is the ‘Position Vector’ method. If the ‘Coordinate Frame’ method is used, the signs of the rotation parameters will need to be changed. The map projection for AGD66 is the Australian Map Grid 1966 (AMG66). AMG66 is a UTM projection (Southern Hemisphere) with three Zones in Papua New Guinea: Source.