Boeing’s 737 Max flight tests underestimated risks, US investigators say

Boeing’s evaluation of the 737 Max system during development used an oversimplified test that didn’t anticipate the cacophony of alarms and alerts that actually occurred during a pair of deadly crashes, US investigators concluded. In the first official finding from a US govt review of the crashes that grounded Boeing’s best-selling airliner, the NTSB Thursday issued seven recommendations calling on the FAA to update how it assumes pilots will react in emergencies and to make aircraft more intuitive when things go wrong. “We want them to step up how they certify these airplanes with regard to the human interface,” said Dana Schulze, the director of NTSB’s Office of Aviation Safety. The agency’s 737 Max recommendations don’t call for any specific updates to the plane or other aircraft, but could lead to sweeping and costly changes. <br/>