a/c Aircraft
BL Belly landing
BO Bale out
CR Crashed
CRL Crash landing 
dbf Destroyed by fire
DF destroyed in fire
EF Engine Failure
e/r en route
F Fire
FL: Forced Landing
GAC Ground Accident
GL Ground looped
K Killed
ldg  Landing
MAC Midair Collision 
MF Mechanical Failure
oG Out of Gas
LAC Landing Accident
s/d Shot down
TOA Take Off Accidents
TAC Taxying accident
U/c undercarriage
w/o written off