|NTSB Special Investigation Report, R22 Loss of Main Rotor Control Accidents|
|Robinson R22 helicopter aerial mustering usage investigation|
|Light Utility Helicopter Safety in Australia|
The aim of this report was to determine if any particular light utility helicopter model has a higher risk profile than similar aircraft. For each of the light utility helicopter models the report compared accident trends (fatal and non-fatal), accident rates per registered aircraft, fatal accident rates per hours flown and accident rates per hours flown.
|Hydraulic System cited in loss of AS350|
Flight Safety Foundation article on Hydraulic Failure and its effects on the loss of an AS350 in Canada.
|Unanticipated Right Yaw at low speeds|
Filght Safety Foundation Article on LTE from the late 1980s. Also included is a short article on a maintenance error which caused the loss of a Whirlwind.
|Preventing Dynamic Rollover|
Flight Safety Foundation Article on preventing dynamic rollover, it looks at the circumstance necessary to achieve dynamic rollover, a simple physical description and suggests methods for prevention. Also included is a short article on main rotor icing, with no visible sign on the airframe.
|Flight Safety Foundation LTE Article|
Flight Safety Foundation document which looks at an LTE accident in detail.
|One Strike and you're out.|
Flight Safety Australia article on helicopter wirestrikes.
|CAA New Zealand - Helicopter Performance|
Another widely overlooked subject in the UK, this short leaflet gives advice and examples about when, where and how to perform helicopter power checks and performance assesments.
|FAA Advisory Circular on LTE|
The FAAs original document with description of and advice on LTE.
Mornington Sanford Aviation have the same article in a more readable format here.
|NTSB Safety Recommendation re: R22 Loss of Main Rotor Control|
NTSB Safety Recommendation to the FAA about the Robinson R22 and loss of Main Rotor Control accidents.
|US Mil Report on spatial disorientation accidents|
Spatial disorientation in US Army Helicopter Accidents. An update of the 1987-92 report to include 1993-95.
|US Mil Report on spatial disorientation accidents 1987-1992|
Spatial disorientation in US Army Helicopter Accidents from 1987-1992.
|Spatial Disorientation - Seeing is not believing|
FAA spatial disorientation safety brochure.
|FH-1100 Low G Mast Bumping|
Flight Safety Foundation article on Low G mast bumping in an FH-1100 and some dubious maintenance practices.
|Ag Helicopter accident causes.|
Flight safety foundation article on agricultural helicopter accident causes, which conclude mainly engine failure, although a collective control bearing also features.
|Loss of control accidents in lightweight helicopters|
Flight Safety Foundation article on loss of main rotor control accidents to lightweight helicopters, focussing on the R22 and R44 and the introduction of SFAR-73 and the virtual elimination of Low-G mast bumping incidents as a result.
|Spatial disorientation as a factor in aviation accidents and incidents|
An overview of spatial disorientation as a factor in aviation accidents and incidents
|NTSB Safety Recommendation re: R22 Main Rotor Divergence Incidents|
NTSB Safety Recommendation re R22 Main Rotor Divergence. Looking at 3 accidents in detail which involved some fairly experienced helicopter pilots and which were fatal. Includes an appendix of 21 R22 loss of main rotor control accidents.
|178 Seconds to Live VFR into IMC|
A CASA publication with details of the 178 seconds to live study, Fixed wing based but highly useful.
|Australian Wirestrike Report|
An in depth look at one wirestirke accident that occurred while filming in Australia.
|Fixed and rotary-wing aircraft accidents involving private operations|
An Australian study into both fixed and rotary wing accident rates between 2001 and 2005.