I spoke with a Yemenia pilot and he told me that the destination was... well difficult.
In fact, he told me that many companies are no longer going to Comoro because they couldn't protect their crews and their assets.
Yemenia had to replace more than 2000 life jackets, dozens of first aid packs, dozens of portable lights... etc.
I am not even sure that there was a life jacket aboard the day of the crash...