 NSCA operated a fleet of aircraft and helicopters including the Beechcraft B200C Super King Air, Dornier 228, GAF Nomad N-22B, Hughes 500D, Bell UH-1 Iroquois, Bell 205A, Bell 212 and Bell 412.On 21 December 1988, the Victorian Division of NSCA advised the Board that further information was required to complete current year's audit and would need to modify its audit reports for the previous three years.The board appointed chartered accountants to investigate the Division's accounting procedures.