Metric: Gap between the 3-year global and regional accident rates
Description: This metric is calculated by using the average accident rate for the selected region for the past 3 years,
and then comparing it against the 3-year Global Accident rate (e.g. 4.4 for 2008-2010, 4.1 for 2009-2011, 3.8 for 2010-2012, 3.4 for 2011-2013, 2.9 for 2012-2014).
The accident statistics used is from ICAO (published in the Safety Reports), as well as scheduled commercial departures from the Official Airlines Guide (OAG).
Measurement: Accidents per million scheduled commercial departures on aircraft above 5 700kg
Metric: Gap between the 3-year global and regional percentage of accidents
Description: This metric is calculated by using the average percentage of accidents for specific accident categories (as defined in ADREP e.g. RE, RI, CFIT, LOC-I),
for the selected region for the past 3 years. This is then compared against the 3-year global percentages for the same accident categories.
Measurement: Accidents limited to scheduled commercial departures on aircraft above 5 700kg