Table 4.3f
Analysis
A number of assumptions have been made related to the distribution of exposure data, and as a result the data should be used with some caution. Nevertheless, no other rate data is known to exist for worldwide business aviation. The results of the extrapolation should be suf-ficiently accurate to provide a reasonable comparison with accident information from other aviation sectors.
4.4 Comparison With Other Aviation Sectors
IBAC is experiencing increasing difficulty in drawing meaningful comparisons of business avia-tion safety data i.e. accident rates per 100,000 departures with those developed and published for other sectors of the aviation community. The incongruencies inhibiting such comparisons include; operational classification i.e. commercial vs. non-commercial, classification of acci-dents involving fatalities i.e. passengers only or crew, hull loss accidents, range of aircraft MCTOM encompassed by the data, lack of disaggregation by power plant i.e. turbojet, turbo-prop or recips etc. While it is unlikely that these incongruencies can ever be fully reconciled, IBAC is making every effort to understand and identify these factors and will continue to pro-mote international recognition of the IBAC safety data.
Aviation Sector Fatal Accident Rate (per 100,000 departures)
All Business Aircraft (Jet and Turbo Prop)* 0.46
Corporate Aviation (Jet and Turbo Prop)** 0.07
All Business Jets*** 0.20
Boeing Annual Report – Jet aircraft MCTOM over 60,000lbs engaged in commercial scheduled passenger operations.**** 0.048
Table 4.4a
* Per Table 4.3c. IBAC rate is 5 year average. ** Per Table 4.3d. IBAC rate is 5 year average. ***Per Table 4.3a. IBAC rate is 5 year average.
**** Boeing – Statistical Summary of Commercial Jet Airplane Accidents, Worldwide Operations 1959-2008. Rate is for a 10 year period, 2000-2009
4.5 Accident Rate Trend
3
2.5
2
1.5
1
0.5
0
2000‐2004 Issue 4 2001‐2005 Issue 5 2002‐2006 Issue 6 2003‐2007 Issue 7 2004‐2008 Issue 8 2005‐2009 Issue 9
Table 4.5a Accident rate per 100,00 departures
Jets Jets fatal Turbo Props Turbo Props Fatal Jets Corporate Jets Corporate Fatal
5.0 IS-BAO Safety Value
A Code of Practice
The International Standard for Business Aircraft Operations (IS-BAO) is an industry safety stan-dard introduced in 2002 as the industry’s code of practice designed to raise the safety bar by codifying safety best practices. Given that there are very few accidents in the business aviation community, it will be many years before a determination can be made regarding whether or not the IS-BAO is making a safety impact. Therefore, to assess the safety value a study was initi-ated based on historical accident data.
An analysis of past accidents required a considerable amount of subjective assessment as the analysts had to review the details of accidents against a full understanding of the IS-BAO to make a value judgment regarding whether the accident may have been avoided if the IS-BAO had been implemented.
The study was conducted by an independent analyst who reviewed a total of 500 accidents covering the period between 1998 and 2003. A total of 297 accidents of the 500 were consid-ered to contain sufficient information to be further assessed. The study against the provisions of the IS-BAO standard was performed to determine a level of probability that if the flight de-partment had known about and implemented the IS-BAO the accident may have been avoided. The data was classified and analyzed to determine the potential impact of the IS-BAO and the accidents were rated on a five point scale ranging from certainty of prevention to no effect.
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