Canadian authorities warn Sikorsky-92 A helicopters need gearbox part replaced . This `` one-time modification '' was to be done within 1,250 flight hours or within a year of the alert 's issue date . FAA to issue emergency directive ordering repair , Canadian safety board says . Score: 6 Sikorsky-92 A crashed last week off Newfoundland ; 17 people died .
Canadian authorities warn Sikorsky-92 A helicopters need gearbox part replaced . FAA to issue emergency directive ordering repair , Canadian safety board says . Score: 6 Sikorsky-92 A crashed last week off Newfoundland ; 17 people died .