• Refuelling stop, Ogden, Utah


Goldak's fleet consists of two Piper PA-31 Navajo aircraft, a Cessna 208 Caravan and a Piper PA-31T2 Cheyenne. As well as being ideal aircraft for operating in the challenging airborne survey environment each of our aircraft have been modified to reduce aircraft induced magnetic noise.

  • all ferrous steel fasteners in the vicinity of the magnetic sensors have been replaced with those made of non-magnetic 300 series stainless steel alloy
  • the aircraft's charging systems have been isolated to minimize random electrical currents in the airframe
  • aircraft skins and control surfaces have been electrically bonded to minimize random behaviour in electrical eddy currents
  • each aircraft has been fitted with additional static wicks to minimize the effects of precipitation static

Of course a magnetically clean aircraft is only part of the picture. The best equipment is integral to producing the best results. We exclusively use Geometrics G-822 cesium vapour magnetometers allowing absolute quantization of the magnetic field vector to .002 nT, coupled with RMS compensation for robust, repeatable and verifiable compensation.

Accurate real-time positioning is achieved through the use Novatel dual frequency GPS receivers. This allows accurate flying of predetermined drape surfaces. Eliminating altitude mis-ties improves line to line correlation of the data with a direct effect on the resulting grids. The use of multiple receivers allows for the determination of aircraft attitude to within one degree in pitch, roll and yaw.

State of the art RS-500 detectors from Radiation Solutions Inc. provide accurate and reliable gamma ray detection.

Full Equipment Listing