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Old 20th Feb 2013, 20:03
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Gauges and Dials
 
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Denominator! My kingdom for a denominator!

Error_401 is exactly right.

Occupant fatalities divided by occupant-takeoff-landing-cycles is a reasonable measure. Occupant fatalities divided by occupant-miles is a semi-reasonable measure. Occupant fatalities divided by the number of airframes built is a silly measure.
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