The 1800-hour maintenance and modification, undertaken in Redcliffe, Queensland, included a new GPS Garmin navigation system, Sky Connect and satellite phone, oxygen relocation, installation of a Traffic Collision Avoidance System (TCAS), wire strike warning system and interior changes.

During this time, the service continued its operational requirements with a back-up aircraft from Newcastle.

The modifications were necessary to comply with NSW Ambulance contract requirements, as well as increasing the chopper’s extensive safety features.

The largest modification was the installation of an external pod to house the two oxygen tanks, increasing oxygen capacity to 3200 litres for patients.

The measure has freed up cabin space in order to better facilitate multiple patient care.

The additional room also means the chopper can

now accommodate four seated passengers and one

stretcher patient, needed when transporting emergency services personnel to an accident scene.

But the bells and whistles don’t stop there.

The GPS navigation system allows the helicopter’s pilots to monitor their route on a real-time moving map, while the Sky Connect tracking system and satellite phone allows all craft in the air to be monitored and rediverted to tasks according to priority.

The new wire strike warning system detects power lines and illuminates warning lights on the control panel, while an audio warning is emitted through the intercom system.

Another new safety feature is the TCAS, which detects other aircraft in uncontrolled airspace up to five nautical miles away and alerts the pilots through a warning system.

It can also give an indication of an aircraft’s height.

New restraints for performing winch rescues have also been installed.

Senior air crewman Trent Owen said the new features and modifications had greatly increased the safety of crew and patients and their care.

“This would be one of the most capable BK117s with all the new gear fitted to it,” he said.

“Training in the operation of new equipment has been undertaken and we are pleased to have it back here in Tamworth.”