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DOE-STD-3014-96
APPENDIX B
for large military aircraft with the pattern side to the right of the runway; Tables B-7 and
B-9 are for large military aircraft with the pattern side to the left of the runway;
Tables B-10 and B-12 are for small military aircraft with the pattern side to the right of
the runway; and Tables B-11 and B-13 are for small military aircraft with the pattern
side to the left of the runway.
Note that the commercial aviation takeoff and landing crash location probability values
are symmetric about the x axis (the extended runway centerline), i.e., f(x,y)=f(x,-y). In
addition, the crash locations are concentrated along the x axis, which is to be
expected, since commercial aircraft are always flown under instrument flight rules and
follow a precise directional approach during takeoff and landing operations. Also note
that, consistent with the coordinate convention system used, all takeoff crash locations
are in the positive x direction occurring beyond the end of the runway (see Table B-2).
The landing crashes have negative values for the x distance, because during landing
the aircraft approaches the runway from a negative x value and heads towards the
origin.
Tables B-4 and B-5 provide the estimated crash location probability values for fixed
wing general aviation takeoff and landing crashes, respectively. The estimated
probability values are based on the crash location classifications and distances
provided in the NTSB database. The probability values indicate more widely spread
crash locations, as expected, since general aviation aircraft are frequently used for
training and takeoff and landing practice, and they are usually flown under visual flight
rules.
For military aviation, two sets of crash location probability values are provided for each
aircraft subcategory. Each set identifies the pattern side, the side of the runway where
the majority of flight activities take place. For large military aircraft, the estimated
crash location probability values for takeoff and landing crashes are provided in Tables
B-6 and B-8 when the pattern side is on the right side of the runway, and in Tables B-7
and B-9 when the pattern side is on the left side of the runway. For small military
B-8


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