Not unusual as the rotor blades often build up static as they turn through the air. Static discharge kits sometimes do not relieve the situation quickly enough. Regular flights the crew and pilots get used to it, someone who has not flown in a while would tend to be green around the gills as it were.
Saudi FM: We hope Iran uses sanction relief for development, not nefarious activities (Reuters)
from the article: Gilad Shalit visited by IDF medical officers on morning after release