A confused response to an engine issue earlier in the day, a sudden power loss and a failed autorotation…but crashing into trees was decisive in the two occupants’ survival say NSIA.
Latent Engine Defect Downs R44: NR Dropped to Zero During Autorotation Read Post »
An offshore helicopter was caught on deck in a thunderstorm. A helideck lightning strike was suspected but the helicopter damage was not spotted until ashore.
Helideck Lightning Strike: Damage Missed Read Post »
The NTSB determined that this air ambulance helicopter accident, which killed 3, was due to a loss of control as a result of fatigue during cruise at night.
Fatal Fatigue: US Night Air Ambulance Helicopter LOC-I Accident Read Post »
BEA identify several contributory factors for a power line inspection crew’s failure to identify a crossing cable before a wire strike.
Crossing Cable Wirestrike Read Post »
A confined HEMS landing site, a backlit but identified low wire, a misdiagnosed routing and mitigating a FOD threat all added to the complexity in this landing.
Hanging on the Telephone… HEMS Wirestrike Read Post »
Continuing airworthiness management: It’s not always better to do more maintenance than the TC Holder recommends. Part 1 of an article that will go on to look at occupant survivability in Part 2.
Hawaiian Air Tour EC130T2 Hard Landing after Power Loss (Part 1) Read Post »
The need to be cautious of hidden debris is highlighted by this NTSB report.
Air Ambulance Helicopter Downed by Fencing FOD Read Post »
There was an inadequate pre-task briefing, and an undersized team. Operations continued as drizzle started in order to use all the mixed concrete. A device that would have increased separation from the live line was on-site but not used.
Shocking Accident: Two Workers Electrocuted During HESLO Read Post »
The BFU investigated how flying controls of a SAR helicopter became disconnected. A nut was reused. Torque was insufficient. Lubrication was applied incorrectly. A cotter pin was likely omitted. The maintenance was also not signed off.
SAR AS365N3 Flying Control Disconnect: BFU Investigation Read Post »
Airbus AS350B2 9N-ALR of Simrik Air, fell from the helipad on top of the 12-storey Grande International Hospital, Kathmandu, Nepal, ending on the hospital roof c3 m below.
Air Ambulance Helicopter Fell From Kathmandu Hospital Helipad Read Post »
Newly released data in the NTSB public docket suggests that the accident that killed 7, including coal billionaire Chris Cline, was likely due to a Somatogravic Illusion causing spatial disorientation during the night take off.
NTSB Investigation into AW139 Bahamas Night Take Off Accident Read Post »
While on a VFR approach below minima to a mine site there was a loss of visual reference and a Loss of Control – Inflight. The helicopter impacted the water but neither aircraft nor occupants were equipped for sea survival. All 8 POB likely drowned or quickly succumb to hypothermia in 2°C water.
Fatal Mi-8 Loss of Control – Inflight and Water Impact off Svalbard Read Post »
This MD500E helicopter crashed moments after entering a hover when the pilot was surprised by geese.
Pilot Goose(d) Surprised and Crashed Read Post »
At night a ground ambulance driver manoeuvred closer not realising the rotor blades were turning. Exactly 6 months earlier a drunk driver had driven into the same helicopter!
Ambulance / Air Ambulance Collision Read Post »
Possible self-induced commercial pressure and task fixation may have been factors in a HESLO accident involving a loss of visual reference at a mountain top site on lift 29 of 30, resulting in spatial disorientation and a partial loss of control say AIB Denmark.
Inadvertent Entry into IMC During Mountaintop HESLO Read Post »
Security surrounding the VP’s travel meant the crew were given little time to consider an ad hoc landing site. They were reassured that a police B412 had landed safely, but they had not been trained in brownout landings and came into a hover…
AW139 Brownout Accident with the Nigerian VP Aboard Read Post »
A pilot flying a Swedish reindeer herding flight attempts to land due to a change in circumstances (the reindeer have emigrated to Norway!) but a high landing site recce fails to detect a telephone cable…
Impromptu Landing – Unseen Cable Read Post »
A HESLO operator moves to keeperless hooks after a 700 kg load was lost during powerline refurbishment in Scotland.
HESLO AS350B2 Dropped Load – Phase Out of Spring-Loaded Keepers for Keeperless Hooks Read Post »
After a change in tasking from surveillance to escorting the Governor’s motorcade, this police helicopter climbed and slowed, falling victim to Vortex Ring State (VRS) say the NTSB. While there is much discussed about recovery from VRS, avoidance is even more critical.
Vortex Ring State: Virginia State Police Bell 407 Fatal Accident Read Post »
This accident begs further questions about the FAA approach to ex-military helicopters and the adequacy of continued airworthiness activity of non-OEM TC Holders.
OH-58C Crash After MRB Fatigue Crack Read Post »
The operator upped the minimum fuel load after this accident once it was realised that high nose up attitudes and fuel tank baffles could result in fuel starvation.
A Baffled Attitude Fuel Starvation Accident Read Post »
“An inflight collision with a hard object of polycarbonate construction, with size and features consistent with that of a small UAS (drone)” say NTSB.
Drone / Helicopter Mid Air Collision over LA City Hall ‘Probable’ Say NTSB Read Post »
An engine power loss due to contamination in the overhaul shop and wire locking left on a quick release mechanism conspired in this fire-fighting helicopter crash.
Maintenance Issues in Fire-Fighting S-61A Accident Read Post »
A low experience pilot waits for the weather to improve but likely suffers from confirmation bias and takes off later in the day on what the AIBN call a “try and see” basis. Video footage from a GoPro showed extremely poor weather during the fatal 5 minute flight.
A Try and See Catastrophe: R44 Accident in Norway in Bad Weather Read Post »
NTSB say oil analysis could have provided early detection of freewheel unit deterioration on a Puma operating on contract to the US Navy for VERTREP.
Freewheel Jerk on an SA330J Puma at Sea: Oil Analysis Opportunity Read Post »
