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IIMC

For safety information about inadvertent entry into instrument meteorological conditions (IIMC), find it here.

  • Safety Bulletin – IIMC
  • Safety Bulletin – Visibility
  • Safety Bulletin – CFIT
  • Safety Bulletin – CFIT and HTAWS
  • Video – Degraded Visual Environment and Loss of Control
  • Video – Airbus Video on IIMC
  • Essay – Inadvertent IMC: Being Somewhere Other Than Cloud 9
  • Essay – The Challenges of Night Flight
  • Release – Lower Nighttime Flight Hours = Higher Nighttime Helicopter Accidents
  • Fact Sheet – Helicopter Accidents During Night Operations
  • Essay – Night Vision Goggle Helmets
  • Essay – Clear Solutions to a Murky Problem
  • Repository – Update on Enhanced Vision
  • Fact Sheet – 8 Golden Rules About Weather and Helicopter Flights
  • Fact Sheet – Follow the Four “C’s”: Helicopter Pilots in Inadvertent IMC Situations
  • Repository – Mountain Flying-Best Practices
  • Video – That Others May Live
  • Video – 178 Seconds to Live
@ US Helicopter Safety Team 2020 · ✉ safety@ushst.org