News & Comment

Maintenance Human Factors in Finnish F406 Landing Gear Collapse

Posted by on 8:51 am in Accidents & Incidents, Fixed Wing, Human Factors / Performance, Maintenance / Continuing Airworthiness / CAMOs, Safety Management

Maintenance Human Factors in Finnish F406 Landing Gear Collapse The collapse of a landing gear leg on landing was linked to the mispositioned pivot pin during prior maintenance.  This was not detected during an independent inspection or a functional check. Finnish safety investigators discuss the associated maintenance human factors and inadequacies in the type’s maintenance instructions. The Accident Flight A Reims (now ASI) F406 Caravan II, OH-OTL, operated by Lapin Tilauslento Oy, departed for a routine night cargo flight from...

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Strictly Scheduled: S-92A Start-Up Incident

Posted by on 8:58 am in Accidents & Incidents, Helicopters, Human Factors / Performance, Offshore, Oil & Gas / IOGP / Energy, Safety Management

Strictly Scheduled: S-92A Start-Up Incident Under customer induced time pressures, a pilot under going type conversion missed a unique action that was not explicitly allocated in the operator’s procedures.  Consequently the main rotor anti-flap stops of Sikorsky S-92A VH-ZUQ, operated by BHA, were damaged during start-up at Broome, WA on 10 November 2016, prior to a flight to an offshore installation.  The Australian Transport Safety Bureau (ATSB) explain: The flight crew consisted of a pilot flying (PF) in the right crew seat, and...

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Deepening Delivery: HeliOffshore 2017 Conference Report

Posted by on 6:41 pm in Accidents & Incidents, Crises / Emergency Response / SAR, Design & Certification, Helicopters, Human Factors / Performance, HUMS / VHM / UMS / IVHM, Maintenance / Continuing Airworthiness / CAMOs, Offshore, Oil & Gas / IOGP / Energy, Regulation, Resilience, Safety Culture, Safety Management, Survivability / Ditching

HeliOffshore Conference 2017 Report: Deepening  Delivery The offshore helicopter safety association, HeliOffshore held its third conference and AGM in Budapest 13-14 May 2017.  The focus was on ‘Deepening Our Delivery’ of improved offshore helicopter safety. The conference was attended by 180 industry leaders from operators, helicopter manufacturers, oil and gas companies, regulators, suppliers and service providers (including, for the third year, Aerossurance). Introduction The conference opened with perspectives on progress to...

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BFU Report on Dramatic Challenger Wake Vortex Accident

Posted by on 2:59 pm in Accidents & Incidents, Air Traffic Management / Airspace, Business Aviation, Fixed Wing, Regulation, Safety Management

BFU Report on Dramatic Challenger Wake Vortex Accident Bombardier CL-604 Challenger D-AMSC dropped 9,000ft after a wake vortex encounter resulted in a temporary loss of control over the Indian Ocean.  This resulted in two serious injuries (head injuries and a fractured rib in one case and a fractured vertebra in the other) andone minor injury.  The airframe was overstressed and written off. The business jet, operated by MHS Aviation of Munich, was in the Mumbai FIR en route from Malé, Maldive Islands to Al-Bateen, UAE with 9 people on board...

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Corrosion Found on an S-92A Flying Control Bracket

Posted by on 1:42 pm in Helicopters, Maintenance / Continuing Airworthiness / CAMOs, Offshore, Oil & Gas / IOGP / Energy, Safety Management

Corrosion Found on an S-92A Flying Control Bracket Corrosion was recently found on a flying control bracket of a 3 year old Australian Sikorsky S-92A, masking the attachment bolt torque value, according to a Service Difficult Report (SDR) submitted to the Civil Aviation Safety Authority (CASA) by an offshore helicopter operator. The operator reported: During routine inspection, it was found that one of the tail rotor pulley attachment bracket bolt has failed 100 in-lb torque check. Further investigation found FWD inboard anchor nut rivets had...

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FOD and an AS350B3 Accident Landing on a Yacht in Bergen

Posted by on 10:33 pm in Accidents & Incidents, Airfields / Heliports / Helidecks, Business Aviation, Helicopters, Offshore, Safety Management, Survivability / Ditching

FOD and an AS350B3 Accident Landing on a Yacht in Bergen  On 10 May 2017 Airbus Helicopters AS350B3 G-HKCN of HQ Aviation crashed into the sea while attempting to land on the 60m yacht Bacarella outside Bergen harbour in Norway. The aircraft capsized after what was a Survivable Water Impact rather than a controlled ditching. The pilot reportedly re-entered the aircraft and activated the Emergency Flotation System (there was no Automatic Float Deployment System [AFDS] fitted) and assisted the two passengers to egress. The Norwegian Society for...

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Bell 429 TR Pitch Change Link Bearing Failure

Posted by on 8:25 pm in Accidents & Incidents, Design & Certification, Helicopters, Maintenance / Continuing Airworthiness / CAMOs, Regulation, Safety Management

Bell 429 Tail Rotor Pitch Change Link Spherical Bearing Failure On 21 August 2015, a privately operated Bell 429, N429AR, experienced an in-flight tail rotor pitch change link (PCL) failure and subsequently landed safely in Port O’Connor, Texas. The Accident Flight The US National Transportation Safety Board (NTSB) report that during cruise the pilot: …felt a “slight vibration” and heard a “very faint bumping sound.” A flight control check revealed no anomalies, and the pilot continued the flight to the destination heliport. While...

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Ground Collision Under Pressure: Challenger vs ATV: 1-0

Posted by on 12:08 pm in Accidents & Incidents, Airfields / Heliports / Helidecks, Business Aviation, Fixed Wing, Human Factors / Performance, Safety Management

Ground Collision Under Pressure: Challenger vs ATV: 1-0 Bombardier CL-600-2B16 Challenger N613PJ, operated by Paragon Jets, ran over an all-terrain ground vehicle (ATV) at Palm Beach International Airport, Florida on 22 July 2015. Under Pressure The US National Transportation Safety Board (NTSB) describe in their final report that: According to the captain, the flight crew was under pressure from the operations department to continue to southern Florida to complete their flight and pick up customers that were waiting. In the telephone...

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AW139 A6-AWN Ditching off UAE, 29 April 2017

Posted by on 2:07 pm in Accidents & Incidents, Helicopters, Offshore, Oil & Gas / IOGP / Energy, Safety Management, Survivability / Ditching

AW139 A6-AWN Ditching off UAE, 29 April 2017 Leonardo AW139 A6-AWN, operated by Abu Dhabi Aviation (ADA), made a precautionary ditching off the coast of the UAE near Mubarraz Island on 29 April 2017.  Details are limited but early reports suggest that the ditching was in response to apparent indications of a mechanical failure.  All persons on board were recovered safely.  The aircraft (MSN41213, a long-nose 139 built in the US in 2009) capsized before salvage. Common themes of the limited amount of (mostly 3rd hand) information available in...

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Super Puma Second Stage Planet Gear Background

Posted by on 3:27 pm in Accidents & Incidents, Design & Certification, Helicopters, Offshore, Oil & Gas / IOGP / Energy, Regulation, Safety Management

Super Puma Second Stage Planet Gear Background The investigation into loss of CHC Helikopter Service Airbus Helicopters EC225/H225 LN-OJF on 29 April 2016 and the similarities to the 1 April 2009 Bond G-REDL AS332L2 Super Puma accident, has created interest in the second stage epicyclic planet gears used. This article draws on a the most recent Accident Investigation Board Norway (AIBN – the Statens Havarikommisjon for Transport [SHT] in Norwegian) 102 page preliminary report on the LN-OJF accident, issued on 28 April 2017. Readers...

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