Fatal 2015 Helicopter Crash In Erie Caused By Rotor Failure

ERIE, Colo. (AP) — A 2015 helicopter crash that killed two people in northern Colorado was caused by cracking in the helicopter’s rotor system. That’s according to a report released recently by the National Transportation Safety Board.
The federal investigators say that the crash near the Erie airport was caused by an in-flight break-up of the aircraft’s rotor system prompted by undetected fatigue cracking.
(credit: CBS)
The crash killed flight instructor Alex Viola, a 23