HeliOffshore Launch HUMS Best Practice Guide
HeliOffshore Launch HUMS Best Practice Guide The offshore helicopter safety organisation, HeliOffshore, has today launched a Health & Usage Monitoring System (HUMS) Best Practice Guide to standardise and improve HUMS use worldwide. The main element of helicopter HUMS is Vibration Health Monitoring (VHM), designed to detect developing mechanical failures in safety critical transmission and rotor systems components. HUMS first entered service in 1991 and made a major contribution to improving offshore helicopter safety. While technology has advanced, HUMS remains a system that demands a high level of skill and careful management to achieve the maximum safety benefit. The new document sets out the best practice for managing the use of HUMS. The 41 page HUMS Best Practice Guide and a shorter Implementation Guide, are the result of more than 12 months of hard work and over twenty meetings between the HUMS specialists from CHC, Babcock, ERA, Bristow, PHI, Weststar, Cougar and Bell. The team was lead by Russell Gould (Director, Global Fleet Support, Bristow Group) and Malcolm Garrington (Manager HUMS Support, CHC). Aerossurance is delighted to have been invited to provide an input during the development process and comment on the final document. HeliOffshore CEO, Gretchen Haskins commented: The launch of HeliOffshore’s Health and Usage Monitoring System Best Practice is the result of a highly engaged industry putting momentum behind those actions that will make the greatest difference to safety. We know that those at the frontline of our operations want to use these tools to their total achievable effectiveness and this guidance is applicable to all types of offshore helicopter operator. To achieve real safety improvement, we now need all operators to read and implement this guidance, dedicating resource to assess your current practice and, thereafter, to deliver improvements so that you are using HUMS according to global best practice. The implementation guidance covers four areas: Safety Leadership Management Reporting Effective Training Employee Engagement As well as containing practical guidance, the authoring team has agreed more demanding requirements than even the primary regulatory guidance document (UK Civil Aviation Authority [CAA] CAP 753). Aerossurance thinks this is an excellent example of how HeliOffshore members are openly working together on global safety improvement and not settling on the lowest common denominator. The document, written by HUMS subject matter experts, also sets out the detailed, practical expectations that intelligent oil and gas customers can use as the basis of their contractual requirements and assurance activity. To further enhance this collaborative working and sharing of experiences, the organisation has also launched the “HeliOffshore Space”, an online collaboration tool for its members. Haskins says: Through HeliOffshore Space, we’re empowering our industry experts to collaborate to the benefit of everyone at the frontline and everyone who travels offshore. HeliOffshore Space uses Jive software and is ideal for collaboration and knowledge sharing across multiple time zones. It will also be a key means of helping HeliOffshore ensure products like the HUMS Best Practice Guide don’t stagnate but are subject to continuous improvement. The HUMS part of HeliOffshore Space will also be the natural online successor to the UK CAA’s Helicopter Health Monitoring Advisory Group HHMAG), that ran for 20 years from the mid-1980s. As part of the launch a video on the HUMS Best Practice Guidance has been issued. UPDATE 16 July 2016: The team who produced the HUMS Best Practice Guide have been nominated for the Sharing and Learning Award at the forthcoming Offshore Safety...
read moreWhen Down Is Up: 747 Actuator Installation Incident
When Down Is Up: 747 Actuator Installation Incident The UK Air Accidents Investigation Branch (AAIB) has published their report into a serious incident involving Boeing 747-443 G-VROM on 29 December 2014. History of the Flight The AAIB report that: The aircraft departed from London Gatwick Airport for a scheduled flight to Las Vegas. Following retraction of the landing gear after takeoff, low quantity and pressure warnings occurred on hydraulic system 4, due to a hydraulic fluid leak. The required checklists were completed and the aircraft returned to land at London Gatwick Airport. As the landing gear extended during the approach, the right wing landing gear struck the gear door, preventing the gear leg from fully deploying. The crew carried out a go-around and, following a period of troubleshooting and associated preparation, a non-normal landing was successfully completed. The Safety Investigation The aircraft was towed from the runway to the operator’s hangar for further investigation. The AAIB report: The damaged wing landing gear door was removed and the right wing landing gear leg fully extended. The right wing landing gear actuator was found installed 180° out of alignment. The hydraulic port boss fitting on the head end of the actuator was distorted and damaged. The 85 kg actuator had been changed the day before following an earlier leakage from the piston rod gland seal. AAIB say: The actuator removal and installation was scheduled to be carried out in the operator’s hangar at London Gatwick Airport, during the day shift on Sunday 28 December. The certifying engineer who led the day shift team stated that he spent considerable time trying to locate the fishpole hoist specified in the AMM [for handling the actuator], but in the end withdrew a hoist designed for installation/removal of the aircraft Auxiliary Power Unit (APU) from the tool store. Due to difficulty in sourcing the correct tooling for this rare task the engineer raised a Ground Occurrence Report (GOR) to highlight this to the operator’s safety department. However, the team stated that the actuator was eventually removed from the aircraft without using either the sling or hoist. They identified that the [Boeing Aircraft Maintenance Manual] AMM did not contain instructions on how to use the sling or how to use the hoist and sling combination to manoeuvre the actuator. Once the unserviceable actuator had been removed from the aircraft, the associated fittings were transferred to the replacement actuator on the work bench. Delays caused by the late arrival of the aircraft to the hangar and a requirement for additional parts to be sourced for the replacement actuator, meant that it could not be installed by the day shift team, so the task was handed to the night shift team who came on duty that evening. An additional engineer, with some experience of installing a landing gear actuator, was reassigned to assist due to the additional workload this task placed on the team. The night shift team reported that the task handover provided by the day shift team was “excellent”. The installation procedure commenced at approximately 2145 hrs and began with the team positioning a set of steps and a lifter platform, carrying the replacement actuator, underneath the aircraft. In order to install the actuator it had to be passed through a section of structure in the wing. The team...
read moreNew NHV Heliport Under Construction in Aberdeen
New NHV Heliport Under Construction in Aberdeen At a time of low oil price it might be surprising to hear that a new heliport is being constructed at Aberdeen Airport in Scotland, but that is what is currently happening. Belgian operator NHV, the launch customer for the EC175 (now H175), has previously been reported to have been keen to establish a base in Aberdeen. We have previously reported that they lodged a planning application with Aberdeen City Council in January 2015 for a facility on the Pitmedden Industrial Estate adjoining the Eastern airfield boundary at the Artic House industrial unit on Kirkton Drive, since vacated by Reel Group, who have moved to larger premises. While currently landside, that site is alongside 130m of the current boundary fence adjacent to Taxiway Echo, near the airport compass base. The plans show the boundary being relocated to give apron space on the airfield. Fully detailed plans can be found on the ACC Planning Department website. At the time of the planning application it was stated that the facility was being designed for the operation of 4 helicopters (“anticipated” to be Airbus Helicopters EC175s, the first of the new super mediums to enter service). Architects for that project are Halliday Fraser Munro. Their plans include a 2400m² two bay hangar and a two 900m² storey office / passenger terminal extending into the yard of the original industrial unit. One hangar bay uses the existing building and contains engineering offices and stores at the rear. The other bay is new. Both feature 18m wide, 5.5m high doors. The H175 has a 15m rotor diameter. Construction company MTM Construction is currently working on the site. The site matches the planning application for the hangar, with an unrestricted bay in the new building facing the airfield. The area for the office / passenger terminal element is currently untouched. Some sources have suggested that NHV have a contract starting 1 January 2016, however there is no other public domain confirmation. UPDATE 13 December 2015: The new hangar is almost fully clad, although work has not started on erecting the passenger terminal. Ground works on the new apron are underway. A sign in the car part confirms the intended occupants: UPDATE 14 December 2015: Rotorhub reports that NHV “plans to begin operating under fresh branding from 17 December 2015 to help raise its visibility in the market.” UPDATE 18 December 2015: NHV launch a rebranding and confirm the Aberdeen operation is to commence on 1 Jan 2016 with 2 H175s for Chevron. This will be the first time that there has been 4 operators in Aberdeen since British Caledonian Helicopters were purchased by Bristow in the 1980s. UPDATE 10 January 2016: A month since our last photographs there has been little visible progress. One hangar bay remains to be handed over and ground works continue on the terminal, necessitating the temporary use of alternative facilities. UPDATE 26 February 2016: Construction of the passenger terminal is just visible in this aerial photograph. UPDATE 4 March 2016: Rapid progress over the last 7 weeks is now evident. UPDATE 2 April 2016: The terminal has progressed but is still WIP. UPDATE 8 May 2016: The terminal walls are almost complete. UPDATE 26 July 2016: Energy Voice reports that the passenger terminal, the last part of the £14 million facility investment, will be open within weeks. In addition to the five-year deal with Chevron to carry employees to the Alba, Captain and...
read moreRegulation (EU) 376/2014: Reporting, Analysis and Follow-up of Occurrences in Civil Aviation
Regulation (EU) 376/2014: Reporting, Analysis and Follow-up of Occurrences in Civil Aviation On 15 November 2015, a new European Union wide aviation reporting regulation came into force. The European Commission has created a safety reporting portal. Previously Mandatory Occurrence Reporting (MOR) was effectively regulated by a Directive 2003/42/EC to each nation to create compatible national regulation. That directive is now superseded by a specific, directly applicable, EU-wide regulation: Regulation (EU) 376/2014 (and the associated Commission Regulations (EC) No 1321/2007 and (EC) No 1330/2007). On 29 June 2015 Implementing Regulation (EU) 2015/1018 was also published, laying down a list classifying occurrences in civil aviation to be mandatorily reported. While some basic elements of the current MOR concept are maintained there are some key differences. The European Aviation Safety Agency (EASA) commented in their Annual Safety Review: With regard to reporting, the new Regulation introduces two types of reporting systems; mandatory and voluntary occurrence reporting. Despite the differences between the two, both will be run in much the same way, use the same process and all occurrence reports will be provided to the relevant competent authority and reported to the ECR. The types of occurrences listed in the Implementing Regulation to Regulation (EU) 376/2014 fall under the Mandatory Reporting System. Regulation (EU) 376/2014 is broader than just reporting of occurrences in civil aviation, including analysis and follow-up too. In the regulation it is stated: Experience has shown that accidents are often preceded by safety-related incidents and deficiencies revealing the existence of safety hazards. Safety information is therefore an important resource for the detection of potential safety hazards. In addition, whilst the ability to learn from an accident is crucial, purely reactive systems have been found to be of limited use in continuing to bring forward improvements. Reactive systems should therefore be complemented by proactive systems which use other types of safety information to make effective improvements in aviation safety. The Union, its Member States, the European Aviation Safety Agency (‘the Agency’) and organisations should contribute to the improvement of aviation safety through the introduction of more proactive and evidence based safety systems which focus on accident prevention based on the analysis of all relevant safety information, including information on civil aviation occurrences. It is necessary to ensure that front-line aviation professionals report occurrences that pose a significant risk to aviation safety. Voluntary reporting systems should complement the mandatory reporting systems, and both should allow individuals to report details of aviation safety-related occurrences. Various categories of staff working or otherwise engaged in civil aviation witness events which are of relevance to accident prevention. They should therefore have access to tools enabling them to report such events, and their protection should be guaranteed. In order to encourage staff to report occurrences and enable them to appreciate more fully the positive impact which occurrence reporting has on air safety, they should be regularly informed about action taken under occurrence reporting systems. Encouragingly the European Commission have also recognised that: The development of other means of collecting safety information in addition to the systems required by this Regulation should be encouraged, with a view to collecting further information which could contribute to the improvement of aviation safety. Where organisations have existing and well-functioning safety information collection systems, they should be allowed to continue to use those systems alongside the systems to be established for the purpose of this Regulation. Reports will ultimately...
read moreAC-130J Prototype Written-Off After Flight Test LOC-I Overstress
AC-130J Prototype Written-Off After Flight Test LOC-I Overstress The prototype US Air Force (USAF) AC-130J Ghostrider, 09-5710, has been declared a total loss after the airframe was “severely overstressed” after a Loss of Control – Inflight (LOC-I) during a flight test from Eglin AFB, Florida on 21 April 2015. Loss of the aircraft is estimated at $115.6 million. The Occurrence The aircraft “exceeded its design limit load to an extent that rendered it unsafe for flight and is considered a total loss to the Air Force” during a “medium risk” test sortie according to Air Force Materiel Command‘s Accident Investigation Board report: The incident occurred while the crew from the 413 Flight Test Squadron at Eglin was performing steady heading sideslips at an altitude of approximately 15,000 feet. The aircraft exceeded the targeted angle of sideslip until it departed controlled flight and momentarily inverted before being recovered after losing approximately 5,000 feet of altitude. The aircraft returned to base and landed safely without further incident. The aircraft pulled 3.19 G and oversped the maximum flap airspeed by 100 knots during the event. The Investigation The report notes that: The Threat Hazard Analysis Worksheet (THAW) and the test cards emphasis for recovery from departures was weighted toward stalls as opposed to sideslip, based on the cautions, warnings, and recovery procedures mentioned. This might be explained by a previous LOC-I during stall testing (see below). Furthermore, data from Lockheed Martin sideslip trials with the unmodified C-130J were not available to the team as the USAF had failed to put a contract in place. It was also not clearly stated in manuals that the Head Up Display (HUD) indication of sideslip freezes and does not increase once a warning level is reached. The President of the Accident Investigation Board concluded: I find, by a preponderance of the evidence, the cause of this mishap was the [Mishap Pilot’s] MP’s excessive rudder input during the test point followed by inadequate rudder input to initiate a timely recovery from high angle of sideslip due to Overcontrolled/Undercontrolled Aircraft and Wrong Choice of Action During an Operation. Additionally, I find, by a preponderance of the evidence, Instrumentation and Warning System Issues, Spatial Disorientation, Confusion and the fact the test team was Provided Inadequate Procedural Guidance or Publications were factors that substantially contributed to the mishap. The report also states: Due to the nature of the acquisition process and the parties involved, there appeared to be poorly defined and/or confusing lines of communication and organizational priorities. Although the President of the Board did not consider it causal or contributory he does comment on the fact that: The squadron’s technical director first removed himself from reviewing any test cards in the unit and then rescinded his signature from the [method of test] MOT. The report goes on: We wondered if the technical director’s actions were symptomatic of safety concerns that were not being respected by other unit leadership. Why would anyone remove their signature from the MOT if he/she felt the procedures were sound. We found no substantial evidence to suggest he was concerned for the safety of the flying qualities test activities. He stated “No changes need to be made to the existing documentation.” The board debated the significance of the situation, and was left with the impression it was a personality issue for the unit and possibly...
read moreCHIRP Critical of an Oil Company’s Commercial Practices
CHIRP Critical of an Oil Company’s Commercial Practices The CHIRP Charitable Trust, who run the UK’s Confidential Human Factors Incident Reporting Programme (CHIRP), has highlighted two “of the many” reports received relating to an oil company changing its North Sea helicopter operator for the second time in three years. CHIRP do not name the oil company. This particular case, which involved an AOC holder, who had set up bases in other EU countries to support that specific oil company, is well known in the industry and has also been covered extensively by the local press. In particular concerns were raised to CHIRP over the effect of psychological stress on flight safety amongst pilots faced with redundancy when the impending termination of the contract became known. Similar concerns were raised by the Commander of a Boeing 757 involved in a serious incident in 2013 were possible distraction due to ‘company turmoil’ was noted. In one of the two reports published, it is also alleged that both in 2012 when the non-UK AOC holder was awarded the contract, and again in 2015 when they were replaced, very short notice mobilisation occurred with a high degree of secrecy. In the Editorial of Feedback 116 CHIRP Chief Executive Ian Dugmore comments: There has to be a better way. He goes on to say: The operator’s creditable efforts to mitigate the risks by encouraging pilots to stand themselves down if they felt unduly stressed were partially offset by pilots’ concerns that demonstrating weakness, particularly mental weakness, could jeopardise future employment prospects. It is not enough to tell pilots that they should not report to work if they are not mentally focussed or stressed. A way must be found to generate the conditions in which pilots can do what they know to be correct without fear of long term disadvantage. CHIRP then goes on to draw parallels with the attention on mental health since the loss of Germanwings Airbus A320 D-AIPX in the French Alps on 24 March 2015. After that accident we discussed the challenges of psychological screening of flight crew and the low rate of self-reporting of mental health issues. UPDATE 13 March 2016: The Bureau d’Enquêtes et d’Analyses (BEA) report, issued to day into the Germanwings accident, does examine the difficulties in self declaring issues that could affect employment. See: Germanwings: Psychiatry, Suicide and Safety Having received these confidential reports CHIRP raised the matter with the UK Civil Aviation Authority (CAA), who in turn contacted the National Aviation Authority of the AOC Holder in question. CHIRP report on one piece of reassuring evidence, that there had been no increase in ‘Level 1’ Flight Data Monitoring (FDM) alerts during the period. It is not stated if CHIRP or the UK CAA made contact with the oil company in question. CHIRP go on to say that: Nonetheless, recognising the conflict between normal commercial pressures that affect almost all elements of industry and safety concerns associated with changes of contract, the CAA decided that this is an issue that will be taken up for discussion with industry in the CAA-led Offshore Helicopter Safety Action Group (OHSAG). Aerossurance has previously summarised the minutes of the last OHSAG to be published (minutes of the most recent October 2015 meeting have not yet been made public). UPDATE 13 December 2015: UK OHSAG Oct 2015 Minutes (though no discussion on the CHIRP report is minuted). CHIRP conclude: …it is noteworthy that the...
read moreMicro FOD: Cessna 208B Grand Caravan Engine Failure & Forced Landing
Micro FOD: Cessna 208B Grand Caravan Engine Failure & Forced Landing We often think of FOD, Foreign Object Damage, as something caused by a carelessly discarded piece of waste or forgotten nut or bolt. The recently issued US National Transportation Safety Board (NTSB) report on a Cessna 208B Grand Caravan accident in Hawaii however describes a ‘micro FOD’ accident from 160 to 195 µm particles that got within an engine during off-wing maintenance. As N861MA, operated by Mokulele Airlines, climbed through 8,000ft over open ocean water on 21 October 2013 with 2 crew and 8 passengers, there was a loud bang and a grinding sound. This was followed by a loss of engine power and sparks from the engine’s right exhaust. The crew initiated a turn back towards Kahului Airport, which was about 13 miles north. The crew performed the emergency checklists and elected to make an emergency landing on Maui’s State Route 31. The aircraft suffered substantial damage to the right wing when it hit two road signs during the emergency landing. The Safety Investigation The NTSB explain that: … all of the compressor turbine (CT) blades [of the single Pratt & Whitney Canada PT6-114A turboprop engine] had separated near the blade platforms, and the remaining stubs were gouged and battered. The fracture surface of one of the blades displayed smooth features characteristic of fatigue fracture; all other blade fracture surfaces displayed course features characteristic of overload fracture. The CT hub displayed a frosted appearance over the entire front and aft surfaces, and glass beads and bead fragments were observed between the fir-tree joints of the blade platforms and the CT disc, consistent with the disc assembly having been cleaned by aggressive glass media blasting in the assembled condition. A dimensional and chemical analysis of a sample of the glass-like beads was accomplished by the manufacturer’s materials laboratory. The beads were revealed to be approximately 195 to 160 µm in size and were composed predominantly of silica with small quantities of sodium, calcium, magnesium and sulfur, which were consistent with the chemical components of glass. The engine manufacturer specifies that all media blast cleaning be performed with the CT disc and blades disassembled. The glass bead contamination of the fir-tree joints caused the CT blades to be unevenly restrained, and it altered the blades’ designed vibration frequency, making them susceptible to the aerodynamic vibrations from the combustor gas flow. Therefore, the fatigue fracture of the blade was most likely due to the glass bead contamination. The CT disc assembly had been removed from the engine for repair about two months before the accident, and this was likely when the glass bead media cleaning occurred and the beads became embedded in the exposed fir tree joints. When the CT disc assembly is installed in the engine, the fir tree joints are protected from exposure; therefore, the glass bead contamination could not have occurred when the engine was installed on the airplane. More detail can be found in the NTSB Powerplant Group factual report. The NTSB determined the probable cause to be: Improper maintenance that resulted in contamination of the engine’s compressor turbine disc and blade assembly by glass bead remnants, which resulted in a blade failure. We have previously written about Foreign Object Debris (FOD) Damages 737 Flying Controls, where a cleaning cloth got trapped on-board a New Zealand aircraft. UPDATE 12 November 2015: European Aviation...
read moreCoaching and the 70:20:10 Learning Model – Beyond Training
Coaching and the 70:20:10 Learning Model – Beyond Training In a recent Harvard Business Review interview Andre Agassi was asked: What distinguishes the best coaches from the rest? His answer: Coaching is not what you know. It’s what your student learns. And for your student to learn, you have to ‘learn’ him. I think the great [coaches] spend a lot of time understanding where the player is. The day they stop learning is the day they should stop teaching. We doubt Agassi would ever have achieved much if the only ‘coaching’ he got was day long PowerPoint sessions delivered by strangers unaware of his current performance and development needs. Yet remarkably some organisations are still hooked on pre-fabricated classroom training as the primary path to perceived competence and performance. 70:20:10: The 3Es – Experience, Exposure & Education Charles Jennings’ 70:20:10 Learning Model was based on the conclusion that 70% of actual learning is through Experience (i.e. actual practice, including On The Job Training [OJT]), 20% is through Exposure to informal, social learning & coaching and only 10% through formal classroom courses and other Education. Scrap Learning Furthermore, one study published in May 2015 suggests nearly 50% of formally delivered learning is ‘scrap’, i.e. never used in practice. Some say its even higher! There can also be an initial ‘illusion of learning‘, but as “lessons communicated in a lecture don’t stick”, initial positivity about a course then evaporates back in the real world. Progressive Learning Organisations Deloitte’s April 2015 study Building Competitive Advantage with Talent, concluded only about 10-15 percent of companies have well-developed learning and development programmes. These progressive organisations are taking more innovative and effective approaches to get higher performance (rather than simply picking from a training catalogue). They are: Considering the specifics of what individuals need to learn to excel in their job, and Applying a variety of techniques (including courses, workshops, on-the-job training and coaching) to satisfy those needs in more focused and effective ways. Critically they are ensuring that learning is actually applied in the workplace and, as research shows, thereby delivering winning performance. We recently also looked at some of the improvement lessons from the turn-around of British Cycling that are also highly relevant to to organisations striving for peak performance. Note: this article was originally published on LinkedIn Pulse under the title: Andre Agassi on Coaching – The Antithesis of Training. You may also enjoy our article: Aircraft Maintenance: Going for Gold? It asks: Should we start treating our people more like athletes who need to achieve peak performance every day? Other Learning Resources Peter Senge’s book The Fifth Discipline is also work a read: Matthew Syed‘s book Bounce discusses the myth of talent and the importance of focused practice. It also discusses how a culture that emphasises the invincibility of talent over learning a can go badly and self-delusionarily wrong, citing Enron. A 2014 report published by the Royal Academy of Engineering identified six engineering habits of mind (EHoM) which fall within 7 wider learning habits of mind (LHoM): Amy Edmonson discusses psychological safety and openness, another function of good leadership that builds trust and aids learning: https://youtu.be/LhoLuui9gX8 Sir John Whitmore has recently written that: Coaching is one of the most effective skills for human growth. It is different way of viewing people, a far more optimistic way than most of us are accustomed to, it results in a different way of treating them. It requires us to suspend limiting beliefs about people, including ourselves, abandon old habits &...
read moreATP Serious Incident – Temporary LOC In Icing Conditions
ATP Serious Incident – Temporary LOC In Icing Conditions The Accident Investigation Board Norway (AIBN) has issued their report into a serious incident where West Air Sweden BAE Systems ATP cargo aircraft SE-MAF suffered control problems while en route on 25 September 2014. Coincidentally, their report was issued on the eve of the 21st Anniversary of the Roselawn ATR 72 accident (we covered the 20th Anniversary of that 1984 accident last October). The AIBN say: A cargo aircraft flying from Oslo to Trondheim gradually lost speed after reaching cruising altitude. The crew observed ice forming on the aircraft and activated the de-icing system. However, the speed continued to drop. The commander decided to descend to a lower altitude. Before the descent could be initiated, severe buffeting occurred. The nose pitched up and the aircraft banked in an uncontrolled manner. The first officer, who was at the controls, stated that he had to push the nose down by force. The ailerons did not respond properly, and the buffeting was so violent that he could hardly read the instruments. He was able to disconnect the autopilot, and the speed increased as the nose was lowered. Control was regained after about 30 seconds. The loss of altitude was not critical in relation to the terrain. The aircraft continued to its destination and landed safely. The AIBN go on to say: Findings made during the investigation indicate that the loss of speed was a result of a combination of icing and mountain waves. A simultaneously occurring technical malfunction in the de-icing system had a minor impact only. The investigation has also shown that the vibrations and the loss of control most likely were caused by a stall or incipient stall. When control was lost, the speed had dropped to 22 kt below the manufacturer’s recommended minimum speed for flying in icing conditions. The crew was not aware that minimum speed in icing conditions existed other than for the approach phase, and believed they had sufficient margin in relation to a stall. The senior operational personnel with the operator seem to have suffered from the same lack of knowledge. The investigation also revealed that the operator’s training program did not touch upon minimum speed in relation to icing during the cruising phase. A potential for improvement in documentation from the type certificate holder was also identified. The AIBN comment that the BAE Systems’ subsequent communications and clarifications in the AFM are significant improvements. However they make two recommendations regarding making minimum speeds in icing conditions easily available for reference in the cockpit. Other Resources Icing conditions (ground and in flight) was the topic for a European Aviation Safety Agency (EASA) conference in 2013. Aerossurance has also published other icing articles: De-Iced Drama: a Norwegian Air Shuttle Boeing 737-800 came close to stalling as a result of a blocked elevator. Canadian Mining Air Accident (Cessna 208B Caravan): where a cold soaked aircraft took off over gross weight due to accumulated ice from a previous flight. Breaking the Chain: X-31 Lessons Learned: where an experimental NASA aircraft was lost after pitot tube icing. Cessna Citation Excel Controls Freeze UPDATE 3 December 2016: ATR72 Control Problems in Severe Icing, Norway, 14 November 2016 UPDATE 29 December 2016: CRJ-200 LOC-I Sweden 6 Jan 2016: SHK Investigation Results, another West Air accident. UPDATE 29 November 2018: Iced C208 Loses Airspeed During Circling Approach and Strikes Ground...
read moreHeliOffshore Progress One Year On
HeliOffshore Progress One Year On We first reported on the plan to create HeliOffshore in June 2014. HeliOffshore was formally launched on 21 October 2014 in London and held its first AGM and conference in Lisbon in May 2015. When membership was opened up beyond helicopter operators in January 2015, Aerossurance is pleased to have been one of the first Alliance Members to join. The organisation has recently issued a news bulletin on progress. Articles include an update from CEO Gretchen Haskins, updates on HeliOffshore’s six priority workstreams, a welcome message for newly appointed Operations Director Francois Lassale and a report from Capt. John Black on Helitech 2015, which included supporting European Helicopter Association (EHA) and European Helicopter Safety Team (EHEST) events. In a spirit if transparency, the audio from two all members conference calls held of 28 October 2015 has also been made publically available. This session included briefings on three of the six current workstreams underway: Automation Health & Usage Monitoring with a HUMS Best Practice Guide, which Aerossurance has had the privilege of being invited to contribute to, due to be launched in November 2015 Information Exchange HeliOffshore CEO Gretchen Haskins has also recently been elected as a Board Member of the Flight Safety Foundation (FSF). Haskins was recently interviewed by Energy Voice commenting: The blame culture doesn’t work as well as the lesson learning culture. HeliOffshore will do everything it can to ensure the lessons do get learned. People are willing to talk about the difficult stuff, act on it and improve safety. What becomes crucial is the adoption of best practice so that we can standardise and improve the safety of global offshore operations. The interest has been great from all sectors, operators big and small from all over the world, manufacturers, oil companies. Everyone is getting together, I’m very excited about how it is progressing. UPDATE 22 May 2016: Offshore Helicopter Safety Performance: 2016 HeliOffshore Conference Report UPDATE 21 May 2017: Deepening Delivery: HeliOffshore 2017 Conference Report UPDATE 13 May 2018: Delivering Our Priorities: HeliOffshore 2018 Conference Report UPDATE 8 May 2022: HeliOffshore 2022 Conference Review Aerossurance is an Aberdeen based aviation consultancy with extensive helicopter safety, operations and contracting experience. For helicopter advice you can trust, contact us at: enquiries@aerossurance.com Follow us on LinkedIn and on Twitter @Aerossurance for our latest updates....
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