Соответствующая норма
Spain
Practice Relating to Rule 48. Attacks against Persons Parachuting from an Aircraft in Distress
Spain’s LOAC Manual (1996) provides that persons baling out of an aircraft in distress by parachute may not be attacked during their descent. Furthermore, such persons, “when reaching the ground, shall have the opportunity to surrender before being attacked, unless it is apparent that they are engaged in a hostile act”. 
Spain, Orientaciones. El Derecho de los Conflictos Armados, Publicación OR7-004, 2 Tomos, aprobado por el Estado Mayor del Ejército, Division de Operaciones, 18 March 1996, Vol. I, § 4.5.b.(1)b); see also § 10.8.f.(1).
The manual adds: “It is lawful to attack paratroops during their descent.” 
Spain, Orientaciones. El Derecho de los Conflictos Armados, Publicación OR7-004, 2 Tomos, aprobado por el Estado Mayor del Ejército, Division de Operaciones, 18 March 1996, Vol. I, § 7.3.a.(6).
Spain’s LOAC Manual (2007) states that it is prohibited to attack: “Combatants parachuting from an aircraft in distress during their descent. Upon reaching the ground, they must be given an opportunity to surrender before being attacked, unless it is apparent that they are engaging in a hostile act.” 
Spain, Orientaciones. El Derecho de los Conflictos Armados, Tomo 1, Publicación OR7–004, (Edición Segunda), Mando de Adiestramiento y Doctrina, Dirección de Doctrina, Orgánica y Materiales, 2 November 2007, § 4.5.a.(1).(b).
The manual notes, however, that it is permitted to attack “airborne troops during their descent”. 
Spain, Orientaciones. El Derecho de los Conflictos Armados, Tomo 1, Publicación OR7–004, (Edición Segunda), Mando de Adiestramiento y Doctrina, Dirección de Doctrina, Orgánica y Materiales, 2 November 2007, § 4.5.a.(1).(a); see also § 7.3.a.(6).