An American Airlines flight traveling from Wichita, Kan. collided with a military helicopter at DC’s Reagan National Airport around 9 p.m. on Wednesday, Jan. 29.

The Boeing 737 MAX is an update to the 737NG. It was built as an answer to the Airbus A320neo, spurred by high demand for a refreshed 737, including a massive order by American Airlines for 100 of ...