Planes have high-tech systems to stop midair crashes. So what went wrong in Washington?
- Written by Chrystal Zhang, Associate Professor, Aerospace Engineering & Aviation, RMIT University
On Wednesday night US time, a passenger jet and US Army helicopter collided at a low altitude near Ronald Reagan Washington National Airport, and crashed into the the Potomac River.
A total of 60 passengers – including US and Russian champion figure skaters – and four crew were on board the American Airlines flight AA5342 from Wichita,...





