Related Rule
Russian Federation
Practice Relating to Rule 48. Attacks against Persons Parachuting from an Aircraft in Distress
The Russian Federation’s Military Manual (1990) lists “the attack of … persons parachuting from an aircraft in distress (with the exception of paratroopers)” as a prohibited method of warfare. 
Russian Federation, Instructions on the Application of the Rules of International Humanitarian Law by the Armed Forces of the USSR, Appendix to Order of the USSR Defence Minister No. 75, 1990, § 5(i).
The Russian Federation’s Regulations on the Application of IHL (2001) states:
The prohibited methods of warfare include … attacking persons parachuting from an aircraft in distress and refraining from any acts of hostility in the course of their descent and upon reaching the ground in territory controlled by an adverse party before being given an opportunity to surrender (except for the parachuting personnel of airborne troops and in other cases when landing with the help of a parachute is used to carry out a mission). 
Russian Federation, Regulations on the Application of International Humanitarian Law by the Armed Forces of the Russian Federation, Ministry of Defence of the Russian Federation, Moscow, 8 August 2001, § 7.