Section 1. It shall be unlawful for any person to compel a change in the course or destination of an aircraft of Philippine registry, or to seize or usurp the control thereof, while it is in flight. An aircraft is in flight from the moment all its external doors are closed following embarkation until any of such doors is opened for disembarkation.

It shall likewise be unlawful for any person to compel an aircraft of foreign registry to land in Philippine territory or to seize or usurp the control thereof while it is within the said territory.