NTSB Finds Improper Maintenance Led to Vegas Helicopter Crash

摘要

The National Transportation Safety Board identified the probable cause of the Dec. 7, 2011, air tour helicopter crash near Las Vegas, Nev., as inadequate maintenance, including degraded material, improper installation, and inadequate inspections. "This investigation is a potent reminder that what happens in the maintenance hangar is just as important for safety as what happens in the air," said NTSB Chairman Deborah A. P. Hersman.