Business Aviation Safety Brief(4)

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Nevertheless, by applying US data relevant to the division between categories of operator, and by making the assumption that the division is relatively similar for the rest of the world, an esti-mate of the rate by operator type can be made.  Given that the North American data represents approximately 64% of the global total, it is unlikely that the distortion generated by the assump-tion will be very large.
The percentage of flight hours for each of the three categories in the USA is as follows: 
Commercial (Air Taxi) 30.4%
Corporate 55.3%
Owner-operated 14.3%
Ed note:
Additional information is provided at Appendix C. The profiling for the above three categories has changed significantly from that in all Safety Briefs
prior to Issue 7. Consequently the data presented in the tables which follow cannot be directly compared with that in the same tables in previous
edition of the Safety Brief, and vice versa.

Assuming a similar division globally, the accident rates per 100,000 flight hours are as follows (based on data over 5 years):
Glo bal Accident Rates by Operator Type (Extrapolated) (per 100,000 flight hours) All Business Aircraft 
Operator Type  Hours  of Operation (5 yrs)  Total Accidents  Fatal Accidents  Total Accident Rate  Fatal Accident Rate 
Commercial (Air Taxi)  15,038,955  305  85  2.03  0.56 
Corporate  27,357,047  75  13  0.27  0.05 
Owner-operated  7,074,245  123  41  1.74  0.58 
*All Business Aircraft  49,470,249  558  157  1.13  0.32 

Table 4.2a
Note: *This line includes the three lines above it, plus Government, Manufacturers and Fractional aircraft operators. Also included are accidents involving operators for which insufficient information was available to assign the operator type.
Glo bal Accident Rates by Operator Type (Extrapolated) (per 100,000 flight hours) Jet Aircraft 
Operator Type  Hours  of Operation (5 yrs)  Total Accidents  Fatal Accidents  Total Accident Rate  Fatal Accident Rate 
Commercial (Air Taxi)  8,246,991  91  23  1.10  0.28 
Corporate  15,001,928  45  5  0.30  0.03 
Owner-operated  3,797,956  18  4  0.47  0.10 
*All Business Aircraft  27,128,261  174  39  0.64  0.14 

Table 4.2b
Note: *This line includes the three lines above it, plus Government, Manufacturers and Fractional aircraft operators. Also included are accidents involving operators for which insufficient information was available to assign the operator type.
Glo bal Accident Rates by Operator Type (Extrapolated) (per 100,000 flight hours) Turbo Prop Aircraft 
Operator Type  Hours  of Operation (5 yrs)  Total Accidents  Fatal Accidents  Total Accident Rate  Fatal Accident Rate 
Commercial (Air Taxi)  6,791,964  214  61  3.15  0.90 
Corporate  12,355,119  30  8  0.24  0.06 
Owner-operated  3,194,904  105  37  3.28  1.16 
*All Business Aircraft  22,341,988  384  118  1.72  0.53 

Table 4.2c
Note: *This line includes the three lines above it, plus Government, Manufacturers and Fractional aircraft operators. Also included are accidents involving operators for which insufficient information was available to assign the operator type.
Analysis
The accident rates calculated in Table 4.2 include both turbo-prop and jet aircraft. The rate data indicates an excellent level of safety in corporate operations, whereas the accident rates in the commercial sector warrants increased attention by the business aviation community.
　
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