In a multi-engine aircraft , failure of a single engine usually results in a precautionary landing being performed , for example landing at a diversion airport instead of continuing to the intended destination . Failure of a second engine ( e.g. US Airways Flight 1549 ) or damage to other aircraft systems caused by an uncontained engine failure ( e.g. United Airlines Flight 232 ) may , if an emergency landing is not possible , result in the aircraft crashing
United Airlines Flight 232
United Airlines Flight 232
Aviation safety