Table 3.1a
Accidents by Opera tor Type - Turbo P rop Aircraft
Turbo Prop Aircraft Total Accidents Fatal Accidents Average Total Accidents per year Average Fatal Accidents per year
Commercial 214 61 42.8 12.2
Corporate 30 8 6.0 1.6
Owner Operated 105 37 21.0 7.4
Government 10 3 2.0 0.6
Manufacturer 2 1 0.4 0.2
Table 3.1b
(Note: No analysis provided for Fractional operations conducted with Turbo Prop Aircraft.)
Analysis
The majority of business aircraft accidents occur in the commercial category, where operations are governed by commercial regulations (such as FAA Part 135 and JAR OPS 1). The next most frequent number of accidents occurs with aircraft flown by business persons. Accidents of corporate aircraft remain rare.
3.2 Accident Summary by Phase of Flight
Five (5) year totals by phase of flight are as follows:
Accident Summary by Phase of Flight
Taxi T/O Climb Cruise Desc’t Man’v App Land Total
Business Jets 15 8.9% 20 11.8% 10 5.9% 8 4.7% 6 3.6% 2 1.2% 15 8.9% 93 55.0% 169 100%
Turbo Props 17 4.4% 29 7.6% 39 10.2% 38 9.3% 8 2.1% 20 5.0% 69 16.1% 164 42.7% 384 100%
60
50
40
30
Jets
%
Turbo Props
20
10
0
Table 3.2a
Analysis
The trend over a period of 35 years demonstrates a substantive decrease in the percentage of taxi accidents, and a notable decrease in accidents in the landing phase, although landing acci-dents remain as the most prevalent.
The trend indicates an increase in the number of accidents occurring in the approach phase. The percentage of accidents in the climb phase has also increased substantively for turbo prop aircraft. The distribution of accidents in the other phases has remained relatively unchanged.
(Note: Supplementary data collected by Robert Breiling over a 35 year period was used to develop this trend.)
4.0 Global Accident Rate Data
4.1 Accident Rate by Aircraft Type
The accident rate per 100,000 flight hours for each year over a five year period, as well as for the total, is as follows:
Acc ident Rate per 100,000 hours by Aircraft Type
2005 2006 2007 2008 2009 5 Year Total
Acc Rate Fatal Rate Acc Rate Fatal Rate Acc Rate Fatal Rate Acc Rate Fatal Rate Acc Rate Fatal Rate Acc Rate Fatal Rate
Business Jets 0.56 0.13 0.69 0.13 0.63 0.13 0.69 0.14 0.37 0.08 0.64 0.14
Turbo props 1.46 0.39 1.39 0.41 1.6 0.56 2.11 0.78 0.70 0.46 1.72 0.52
All Bus A/C 0.98 0.25 1.01 0.26 1.05 0.32 1.29 0.38 0.90 0.24 1.13 0.32
Table 4.1a
Note: Some of the above figures have been re-stated as a result of the
availability of subsequently published accident investigation reports and/or additional information.
4.2 Accident Rate by Operator Type
Global data for the numbers of aircraft in each of the business aviation operational categories (commercial, corporate and owner-operated) proved difficult to obtain as few States collect this information. Similarly, flight hours by type of operation are not available. Due to the lack of good exposure data, it was not possible to calculate, without some error, the rate of each cate-gory of operation. Additionally, the operational status of a single airframe may legally vary from flight to flight (i.e., an aircraft may be commercial on one flight and private on a flight made later on the same day or vice versa).
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