AQAP said it was responsible for Umar Farouk Abdulmutallab 's attempted Christmas Day bombing of Northwest Airlines Flight 253 as it approached Detroit on December 25 , 2009 . In that incident , Abdulmutallab reportedly tried to set off plastic explosives sewn to his underwear , but failed to detonate them properly
Northwest Airlines Flight 253
Northwest Airlines Flight 253
Al-Qaeda in the Arabian Peninsula