Optional Accidental Death & Dismemberment Insurance does not cover any Loss, fatal or non-fatal, caused or contributed to by:
- intentionally self-inflicted Injury while sane or self-inflicted Injury while insane;
- declared or undeclared war or any act thereof;
- active full-time service in the armed forces of any country;
- riding as a passenger or otherwise in any vehicle or device for aerial navigation, other than as provided in the section entitled "Aircraft Coverage".