on 6 june 1982 , during the falklands war Military_operation , the british royal navy type 42 destroyer engaged Participation and destroyed Destroying a british army gazelle helicopter , serial number `` unk '' , in a friendly fire incident Incident , killing Killing all four occupants .

at around 02:00 a radar contact Communication was detected Scrutiny ; a british army air corps gazelle helicopter was making Action a routine delivery Military_operation of personnel and equipment to a radio rebroadcast station on east falkland .