At first the pilot wasn’t aware that the helicopter’s tail rotor had stuck the helideck perimeter netting…
Air Ambulance B407 Hospital Helipad Deck Edge Tail Strike During Shallow Approach Read Post »
During an approach to a hillside fire, airspeed drops dangerously low and the helicopter drifts backwards into trees…
Firefighting AW139 Loss of Control and Tree Impact Read Post »
BEA-E identify a range of possible factors for the jamming of a hoist and severing of the hoist cable during a military training exercise.
Military SAR H225M Caracal Double Hoist Fatality Accident Read Post »
During the second go-around the crew started an impromptu visual approach when the ExxonMobil installation suddenly came into view. A high ROD at low airspeed developed in low-visibility. The helicopter avoided the sea by just 13 ft. A second loss of control occurred during the ascent.
Loss of Control, Twice, by Offshore Helicopter off Nova Scotia Read Post »
After abandoning an inland routing, the crew headed to the coast but fly into high ground after an Inadvertent entry into Instrument Metrological Conditions (IIMC).
Sécurité Civile Fatal EC145 CFIT: Night, Low Ceiling and a Change in Route Read Post »
A change in plan resulted in a helicopter returning with an unballasted sling and at a higher than advised speed this entangled with the tail rotor.
Unballasted Sling Stings Speedy Squirrel Read Post »
A police helicopter presses on for a second time into deteriorating weather.
Plan Continuation Bias & IIMC in Kenyan Police AW119 Accident Read Post »
A key component was never recovered, investigators seem to have misunderstood their own laboratory’s report on another and the NTSB conclusions omit to identify the evident failure of a shear pin to correctly perform its safety function as a factor.
Did you know that rain on a windscreen, in addition to causing poor visibility, introduces a refraction error that can make objects appear lower, by up to 5 degrees?
Windscreen Rain Refraction: Mountain Mine Site HESLO CFIT Read Post »
An accident that highlights the benefit of practical emergency drills and careful consideration of survivability issues.
AS350B3 Ditching Japan Read Post »
JTSB comment: “When introducing new equipment, it is necessary to confirm in advance, the usage including appropriate selection, and sufficiently identify the risk factors”.
SAR AW139 Dropped Object: Attachment of New Hook Weight Read Post »
Fire after activating the rotor brake while the No. 2 engine was still set to govern the power turbine speed.
S-76A++ Rotor Brake Fire Read Post »
Weather conditions forced an unfamiliar approach direction to a familiar landing site. The lack of a site recce first increased risk as did the inaudibility of an obstacle warning system.
Wire Strike on Unfamiliar Approach Direction to a Familiar Site Read Post »
The fourth accident to this H369D proved fatal. NTSB identify that undetected prior engine mount damage was the cause of a clutch failure while using an aerial saw at low level.
Prior Engine Mount Damage Lead to Fatal Aerial Saw Crash Read Post »
A LOC-I during a tight, decelerating turn downwind while a low time pilot was doing a recce of a possible golf course landing site.
Unanticipated Yaw: Loss of Control During Landing Site Survey Read Post »
BEA-E deconstruct a helicopter Mid Air Collision (MAC) during combat operations in Mali and look at human factors that affected situational awareness as the Air Mission Commander wrestled with resolving a Rules of Engagement (ROE) dilemma.
Human Factors of a Mali Mid Air Collision Read Post »
Terminal wire lugs T1, T2 & T3 were found unsecured. T1 was missing its securing nut, washer and lockwasher but was still contacting its terminal stud. T2 & T3 were found hand tight.
RCAF Investigate Defect on Newly Delivered CH-148 Cyclone (S-92) Read Post »
A low time pilot sets out to photograph a fishing boat in IMC that they are not qualified to fly in & the helicopter is not certified for.
The inevitable happens…
Inexperienced IIMC over Chesapeake Bay: Reduced Visual References Require Vigilance Read Post »
PSM+ICR: A propulsion system malfunction (a failing No 2 engine) was followed by an inappropriate crew response (shutting down the No 1 engine). The NTSB show how the pilot may not have been familiar with how the helicopter’s displays respond in emergencies.
Pressing on in bad weather this helicopter descended during an over sea transit to stay in VMC but ultimately impacted the water as visibility deteriorated further.
BK117 Impacts Sea, Scud Running off PNG Read Post »
NTSB points to a failure to consider the Density Altitude in this spectacular air ambulance accident caught on video. But there are wider lessons about planning and landing site hazards.
US Air Ambulance Near Miss with Zip Wire and High ROD Impact at High Density Altitude Read Post »
A Loss of Control – Inflight during a downwind approach to a busy remote landing site. The helicopter crashed in a difficult to access gully and caught fire. It took almost 10 hours for survivors to reach hospital. Five of the 7 occupants died.
Grand Canyon Air Tour Tragic Tailwind Landing Accident Read Post »
The sling for the underslung fire-fighting bucket contacted the tail rotor resulting in a loss of control. Investigators identified a vulnerability in the bucket’s design and shortcomings in promulgating essential design data to operators.
NZ Firefighting AS350 Accident: Role Equipment Design Issues Read Post »
A quadcopter collided with the jetty it was inspecting as the remote pilot tried to maintain visual contact from inside the wheelhouse of a pilot vessel 100 m away.
Inspection UAS Collides with PNG LNG Export Jetty Read Post »
Distracted by radio calls and with a poor split of duties the fire-fighting flight crew missed their high descent rate during their third attempt to uplift water. After the water impact there were survivability issues and one of the crew was unable to escape underwater.
Korean Kamov Ka-32T Fire-Fighting Water Impact and Underwater Egress Fatal Accident Read Post »
