Twas on the tarmac at Jackson's to see a PNGDF Arava start-up and roll forward into a Pixie F-28's left hand engine. Fuel rushing everywhere. The F-28 had a full load of pax just embarked and was running ready to taxy. The Arava as it turned out was being taxied by a PNGDF techo to the PNGDF tarmac however Cpl Spook forgot to turn to select the hydraulics on so he had no steering and little or no brakes and it's slightly downhill....The Arava never flew again.