Aviation Safety Specialists

Aerossurance is an aviation consultancy specialising in helping organisations procure & assure aviation services.  Aerossurance is based in Aberdeen, Scotland and supports customers with aviation advice globally.

Aviation Safety / Risk Management & Airworthiness

Procuring & Assuring Contracted Aviation Services

Accident / Safety Investigation & Analysis

News & Comment

Engine & Emergency Flotation Failures – Greenland B206L4 Ditching

A tiny loose turbine bearing tang triggers an autorotation but frozen water in a hose caused the EFS to malfunction. SB/ICA changes for engine and EFS.

EC135P2+ Air Ambulance Fatal Accident Mississippi 10 March 2025

NTSB Preliminary Report issued 4 April 2025. Last radio call was “we’ve got a major problem…controls are giving us a lot of trouble, coming in fast.”

UK CAA HOFO ACAS Rulemaking 2025 & a 2004 Tornado / AS332L Airprox

UK CAA are proposing making ACAS II mandatory for offshore helicopters: we look back to the 2004 incident that prompted a demonstration that ACAS II was practical for helicopters.