Related Rule
Ukraine
Practice Relating to Rule 48. Attacks against Persons Parachuting from an Aircraft in Distress
Ukraine’s IHL Manual (2004) states:
The following methods of warfare shall be prohibited:
- attacks against persons who … are parachuting from an aircraft in distress and are not performing hostile actions (except for the persons who are landing being a part of the airborne troops). 
Ukraine, Manual on the Application of IHL Rules, Ministry of Defence, 11 September 2004, § 1.3.2.