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 »
An ATR72 suffered an uncommanded yaw and roll as it accelerated through 185 knots. The cause was traced to misassembly during a prior maintenance check. A cam in the rudder Travel Limitation Unit could be reversed, and pressures during the check triggered that misassembly.
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 »
At top of descent a 15 kg MLG door separated causing damage. Maintenance data “complex and contained error” and allowed “allowed nuts to be reused without checking their self-locking capability”.
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 »
A series of systemic maintenance human factors issues emerge from a detailed AAIB investigation into cockpit/cabin fume event.
Flybe Fume Event (Part 1): Compressor Wash Maintenance Human Factors Case Study 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 »
A rare engine failure mode related to miss-rigging a Shut Off Valve. The investigation triggered enhancing maintenance instructions.
Engine Shutdown Results in Revised SOV Rigging Instructions 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 »
Operational pressure, overconfidence and a false sense of security from technology may have contributed to what ANSV describe as an inadequately risk assessed and planned flight.
A Short Flight to Disaster: A109 Mountain CFIT in Marginal Weather Read Post »
The BEA report that during descent a bird shattered the left-hand windscreen and injured the front seat passenger. The pilot was able to make a safe landing.
AS350B3/H125 Bird Strike with Red Kite Read Post »
Hydraulics control system wiring had been misconnected 16 years earlier and repeatedly missed during checks. When inadvertently activated, the “HYD” cut-off caused the TR servo-valve compensator to make the aircraft uncontrollable say GPIAAF.
Fire-Fighting AS350 Hydraulics Accident: Dormant Miswiring Read Post »
Aerossurance sends its Season’s Greetings to all its customers, partners, suppliers, colleagues and friends.
Season’s Greetings from Aerossurance Read Post »
The Malaysian AAIB explains that two flying club helicopters had been flying ‘in company’ before the Mid Air Collision and they question the practice.
Mid-Air Collision of Guimbal Cabri G2 9M-HCA & 9M-HCB: Malaysian AAIB Preliminary Report Read Post »
A decline in GOM helicopter usage continues, especially in single engine helicopters. There were two fatal accidents in 2019.
Helicopter Ops and Safety – Gulf Of Mexico 2019 Update Read Post »
