>In round and, of course, fluctuating figures it is estimated that of the 1500 who die each year in air transport accidents some 900 die in non-survivable accidents. The other 600 die in accidents which are technically survivable and crashworthiness, fire and evacuation issues are all important. Of these 600 perhaps 330 die as a direct result of the impact and 270 due to the effects of smoke, toxic fumes, heat and resulting evacuation problems.