Was Plane That Vanished From Angola the Same One That Crashed off Benin on Christmas Day? ELLEN KNICKMEYER Associated Press Writ By Nafi Diouf and Published: Jan 2, 2004 DAKAR, Senegal (AP) - American authorities are investigating whether a Boeing 727 shattered in a deadly Christmas Day crash off West Africa was the same jet that vanished in Angola last year, setting off a worldwide search, a U.S. State Department spokesman said Friday. Also, a Canadian humanitarian-flight pilot told The Associated Press he saw a 727 with the missing Angola jet's tail number at Guinea's airport in June - a...