an occurrence associated with the operation of an aircraft which takes place between the time any person boards the aircraft with the intention of flight until such time as all such persons have disembarked, in which: a person is fatally or seriously injured; the aircraft sustains damage or structural failure; the aircraft is missing or is completely inaccessible (cf. "incident")
... niisuguste ülesannete täitmine on samas ametiasutuses vajalik loodusõnnetuse tagajärgede kiireks kõrvaldamiseks või õnnetusjuhtumi, vara hävimise või riknemise kiireks ärahoidmiseks ...
Seadme valdaja on kohustatud ... andma Tehnilise Järelevalve Inspektsiooni inspektorile ja teistele volitatud ametiisikutele igakülgset abi avarii või õnnetusjuhtumi põhjuste uurimisel.
Council Directive ... requires the shippers, operators or masters of vessels carrying dangerous or polluting goods and bound for or leaving community ports, to report to the Member States concerned a certain number of information related to the identity, voyage and cargo of the ship before the arrival or departure from sea ports, or in case of an accident at sea.
