Recall the word 'President' sums to '56'. So does 'Paris, France' and 'ISIS'.
President = 47/56/110
March 29 hijacking story linked: http://freetofindtruth.blogspot.com/2016/03/33-41-42-44-47-55-66-74-77-89-96-105.html
There's was also this bizarre story involving Air Force One from January 20, 2016. That was 3-months and 29-days before the May 19 EgyptAir story...