Atsb transport safety report
OCCURRENCES BY AIRCRAFT TYPE
Download 1.26 Mb.
|
- Navigate this page:
- Differences between operation groups and fixed/rotary-wing accidents
5OCCURRENCES BY AIRCRAFT TYPEThis chapter examines occurrences by the type of aircraft involved, and the type of operation being conducted. It primarily considers the number of occurrences in relation to the number of hours flown by the type of aircraft within an operation category. Of the 14,663 aircraft on the Australian civil aircraft (VH-) register in February 2012, fixed-wing aircraft (aeroplanes) accounted for 84 per cent of all aircraft (12,372 powered fixed-wing aircraft and gliders). Rotary-wing aircraft (helicopters), accounted for 13 per cent (the other 3 per cent were balloons). Differences between operation groups and fixed/rotary-wing accidentsGenerally, the accident rate in helicopters in any type of operation is higher than that for aeroplanes performing the same type of operation. This ranges from 1.2 times more accidents in aerial work, up to 2.5 times more in flying training. The exception is in charter operations, where there are slightly more accidents involving aeroplanes than helicopters (about 1.2 times more) (Table 23). When general aviation aeroplanes and helicopters were compared using pooled data between 2002 and 2010, general aviation helicopters had an accident rate of about 122 per million hours flown (293 accidents for about 2.4 million hours flown) and general aviation aeroplanes had about 92 accidents per million hours flown (820 accidents for about 8.9 million hours flown). This represents an accident rate in general aviation helicopters that is about 1.3 times higher than general aviation aeroplanes. This accident rate combines single and multi-engine aircraft. There is also variation in accident rates across different operation types, which are discussed further on in this section. As very few helicopters were involved in air transport operations (all were involved in charter work) in the last 10 years, a comparison of accident rates with fixed-wing air transport aircraft is not provided here. Table 21: Number of VH- registered powered aeroplanes and helicopters involved in accidents, 2002 to 2011
Overall, helicopters were involved in about 36 per cent of all accidents (Table 21) in general aviation in the last 10 years, and 47 per cent of all fatal accidents (Table 22), even though they account for only 13 per cent of the Australian civil fleet. In terms of the amount of flying performed, helicopters fly far fewer hours than aeroplanes (for general aviation, 2.4 versus 8.9 million hours). In 2011, there were about four to five general aviation aeroplane accidents for every air transport accident. Pooled data between 2002 and 2010 demonstrated that there were slightly less than 13 accidents per million hours in aeroplanes performing air transport (175 accidents for about 13.7 million hours flown), versus about 92 accidents per million hours in general aviation aeroplanes. For helicopters, about 10 general aviation helicopter accidents happened for every accident involving a helicopter conducting air transport operations (with air transport equating to charter helicopter flyingError: Reference source not found). Between 2002 and 2010, 30 charter helicopters were involved in accidents for 737,751 charter helicopter hours flown (about 40 accidents per million hours flown). In comparison, there were around 122 accidents per million hours flown for general aviation helicopters. Table 22: Number of VH- registered powered aeroplanes and helicopters involved in fatal accidents, 2002 to 2011
Wirestrike, Bell 206B III JetRanger helicopter (VH-BHU), near Mossman Hospital, Queensland (AO-2011-067) (image courtesy of Queensland Police) Directory: media media -> Applications to Drill media -> Unicef voices of Youth Chat Theme: Children and aids nigeria and Zimbabwe 13 October 2006 Background media -> Tsunami Terror Alert: Voices of Youth media -> Biblical Eschatology Presentation by: D. Paul Beck May 4, 2016 Ground Rules media -> Guide to completing the collection using the Omnibus system media -> The milk carton kids media -> Events Date and Location media -> The Gilded Age: The First Generation of Historians by H. Wayne Morgan University of Oklahoma, April 18, 1997 media -> Analysis of Law in the United Kingdom pertaining to Cross-Border Disaster Relief Prepared by: For the 30 June 2010 Foreword media -> Cuba fieldcourse 2010 Download 1.26 Mb. Share with your friends:
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||