WASHINGTON (Reuters) – Here are some facts about the Boeing 737-800 jet and China Eastern Airlines, involved in a crash on a domestic flight on Monday with 132 people on board. BOEING 737-800 The Boeing 737-800 is part of the 737 family, the world’s most-flown commercial aircraft series. It was developed in the 1960s to serve short- or medium-length routes. The 737-800 is part of the 737 NG or Next-Generation family – with more than 7,000 delivered since 1993 – and it has a strong safety record after nearly three decades of flights. The 162- to 189-seat 737-800 was launched on Sept. 5, 1994. T…