 NTSB Special Investigation Report, R22 Loss of Main Rotor Control Accidents
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 Robinson R22 helicopter aerial mustering usage investigation
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 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.
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 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.
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 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.
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 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.
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 Flight Safety Foundation LTE Article
Flight Safety Foundation document which looks at an LTE accident in detail.
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 One Strike and you're out.
Flight Safety Australia article on helicopter wirestrikes.
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 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.
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 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.
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 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.
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 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.
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 US Mil Report on spatial disorientation accidents 1987-1992
Spatial disorientation in US Army Helicopter Accidents from 1987-1992.
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 Spatial Disorientation - Seeing is not believing
FAA spatial disorientation safety brochure.
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 FH-1100 Low G Mast Bumping
Flight Safety Foundation article on Low G mast bumping in an FH-1100 and some dubious maintenance practices.
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 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.
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 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.
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 Spatial disorientation as a factor in aviation accidents and incidents
An overview of spatial disorientation as a factor in aviation accidents and incidents
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 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.
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 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.
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 Australian Wirestrike Report
An in depth look at one wirestirke accident that occurred while filming in Australia.
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 Fixed and rotary-wing aircraft accidents involving private operations
An Australian study into both fixed and rotary wing accident rates between 2001 and 2005.
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