Boeing ([[BA]] -0.5%) shares slip as much as 1% on news that the National Transportation Safety Board has called on the company to redesign of thousands of its 737 planes to better protect against the impact of engine failures.
NTSB recommendations come after its examination of the April 2018
Southwest Airlines flight in which a fan blade broke off one of the
engines, punctured a three-panel window and killed a passenger.
The federal agency also says airlines should retrofit their aircraft with new engine covers.