Thus, a safety plan for explosions and downed aircraft is essential. Aircraft disasters present a unique set of circumstances and require considerable flexibility in dealing with them. Small single or twin engine aircraft or helicopters usually affect a relatively small area upon impact. Fire, if any, resulting from a crash is usually of short duration and quickly extinguished. A commercial airliner crash could result in a path of fire and destruction one-half mile long and 200 yards wide.
Fire tends to be very intensive with large amounts of smoke.
Disaster activities will be mainly directed toward evacuation of buildings and preventing the spread of fire to other buildings or areas. 111 or dial 911, if after normal working hours. Give your name and describe the location and nature of the emergency. If necessary, or when directed to do so, activate the building alarm. All building evacuations will occur when an alarm sounds.