Boeing 747-100 and 200 series with two ADs against front cargo door and high flight time and cycles. Presssure differential changes during or just after climb, or descent. Radar blip anomaly just before event. FOD number three engine with baggage. One half second of loud bang on voice recorder, then silence.
Nose comes off.
Rest of aircraft falls and disintegrates landing apart from nose. Cargo door and baggage closest to event indicating left first. Missing bodies sat over and aft of cargo door. Front cargo door in pieces. No evidence of explosives found on any passengers nor airframe.