The ILS, which is designed to guide pilots to make precise runway landings in low visibility, was jointly funded by LNG companies in Gladstone to redirect flights from airspace above Curtis Island.
In 2011 Santos GLNG, QCLNG, APLNG and Arrow Energy injected $10.5 million into the project, after it was found that plumes from projects on Curtis Island could interfere with the safe landing of aircraft.
The issue of an ILS at Gladstone was at the forefront recently, with the storms, rain and flash flooding caused by ex-Tropical Cyclone Oswald, testing the skills of pilots landing in the testing conditions - as shown in Jamie C's photos below.
Gladstone Airport Corporation said the project was on track, with it scheduled to be installed in the third quarter of this year. A Santos GLNG representative said the instrument landing system should be in place and fully operational by 2014.
The system will significantly improve the ability of aircraft to land at the airport during adverse weather conditions, meaning fewer flight diversions to Rockhampton.
When the technology is built it will be the third device of its kind to operate in Queensland.