An accident is always a sad event.Just wondering whether the aircraft in question was not equipped with RAAS ? Taxiway KILO was established a while ago although didnot indicate on the Jepp charts. Operated out of Saudi airports and RT was a challenge. Just thinking aloud .... RAAS functions as a part of EGPWS and relies on GPS signals. Sometimes in Jeddah and Riyadh GPS outages are experienced for very short intervals which can inhibit these operations but the amber warning would annunciate at the time .