Category: Safety

Lessons from Operational Events

For an aviation industry that takes pride in learning lessons from experience and taking timely corrective action, a series of operational events is surprising to say the least.

Today’s large aircraft do look much the same. The tricycle undercarriage has become universal. A set of steerable wheels at the front and a heavy set of landing gear, each side, to the rear. When parked, a nose gear collapse or inadvertent retraction on a large aircraft is not catastrophic. The aircraft can be recovered, inspected, and repaired. This undesirable event can be dangerous for anyone in the vicinity. It has the potential to be fatal. Fortunately, so far, there has been no fatalities.

For an aircraft operator such an event at an airport gate is a massive expense. Putting an in-service aircraft out of action for a considerable time.

To date, several damaging nose gear collapse (and alike) events have occurred to large aircraft[1]. Detailed analysis of these events exists and corrective actions are proposed.

One conclusion is to say that this is about people not following procedures. That is the instruction is to put a pin in one place but instead it gets put in the wrong place. So, this dramatic unintended event is written up as a maintenance error. It’s an outcome that no one intended. That’s fine. There’s no doubt that an error was made. Accepting that an error occurred is not a reason to blame. That is if there are no signs of negligence.

The trouble is the simple question – how easy was it to make that error?

Then we get into that grey area of the gap between aircraft design and operations. In a design office it may be reasonably assumed that a procedure will be followed in an almost robotic manner. No need for the people in operations to think beyond taking the same action day-after-day. This would surely become widespread practice.

As we know the actual environment of aircraft operations can be more demanding than the original equipment manufactures might imagine. Pressure to turn around an aircraft can be high, working conditions can be poor and fatigue can play a part.

There are lines of communication between the aircraft design and operations organisations, and such difficulties are regularly discussed.

Faced with an event categorised as maintenance error then what next? Redesign the aircraft? Change a procedure or require more training? Those are three of the options, there are more.

This is where the possible discussion gets reactive. Now, it would be extremely costly to redesign an aircraft for the sake of an event that is rare or for which the consequences are minor. It is possible to put numbers on each of these. The rarity, the cost, and the impact.

Modifying or rewriting a procedure, on the other hand, can be less costly and it may be quite sufficient as a corrective action. That said, any procedure that can be written can be subject to error. In fact, the original procedure may have been straightforward and well thought out.

Then there is the fall-back position. Give the people in aircraft operations more training. The assumption being that more training means less errors. It is a crude assumption because this is not a linear relationship. So many other factors come into play.

Discussions surround the above possibilities can become protracted. There’s a call for more analysis and more data. There’s the proposal for a study to be conducted. Once in that loop a year can go by as if it was a month.

There’s always the argument that highlights dozens of aircraft operators haven’t had this event occur and therefore the finger is pointed at those who have. This argument gets an outing, but it is foolish. It’s like saying – I haven’t had an accident yet, and therefore I’m safe. Foolish.

There are a lot of detailed discussions and a million and one opinions. Taking the big picture, this is a problem that is solvable[2]. What is surprising is the reoccurrence of the problem.

[1] https://www.gov.uk/government/news/aaib-special-bulletin-g-zbjb-inadvertent-nose-landing-gear-retraction-during-pre-flight-maintenance

[2] https://www.federalregister.gov/documents/2019/12/12/2019-26734/airworthiness-directives-the-boeing-company-airplanes

Shaping Our Digital Landscape

Waking up in the morning I look out of the window. A street scene. A well-maintained road. Houses and the greenery of their gardens. Parked cars and flowering shrubs. I hear muted traffic noise from the main road. Birds and the wind rustling through the tall trees.

I didn’t make these or ask them to be there, but I did choose to live on this residential street. In everyday experience there’s a million and one aspects of life that I take for granted. These surroundings have evolved, or should I say developed. Flicking back the calendar, there was a transformational moment. There was a time before this built environment when this area was open fields, hedges, and trees. A rustic farmed landscape.

Systematically, a local authority gave permission for the development of this residential area back in the 1950s. Generally, what they delivered has passed the test of time. The infrastructure works. Notwithstanding the propensity to dig-up the pavements and roads when it doesn’t.

In taking our surroundings for granted there’s not much thought given to the transformational moment that produced this tranquil scene of urban peacefulness. Yet, it was key to what happened for the next 70 years.

Like it or not, a paper based bureaucratic process involving and engaging the councilman and councilwoman of the town and motivated private builders produced this urban setting. Public and private interests working together.

Compare and contrast how our society is making the digital environment that we now inhabit. I could say that it’s not making it at all but rather letting it happen. As an illustration of how strange the transformation impacting us all, I got an e-mail with this intriguing line:

This is an operational email required for your ABC account to function properly and cannot be unsubscribed from.

Here’s an interesting digital imposition in my inbox. I don’t want this ABC account. I thought I’d deleted it. Yet, it’s provider politely tells me that such emails can’t be unsubscribed. I assume they think that’s to my benefit in some mysterious way.

[I won’t get sniffy about west coast Americans ending a sentence with a preposition.]

Where are my elected representatives when it comes to the regulation of the construction of our digital environment? Do the ones in my municipal, regional, or national government have any say over what happens in this fast-moving environment?

I won’t throw my hands up in horror as if there’s no one. I’m aware that there are national politicians who take an interest in the development of the digital world. Debates rage after the fact. An event occurs and an element of society’s digital transformation becomes topic for conversation. It’s all highly reactive. Our sleeping sentinels wake up when the media points out a catastrophe or some pivotal moment of transformation.

Theres little attempt for, systematically, an authority to give permission for a development or even to assert that right on our behalf. We live in a democracy where elected politicians are either asleep at the wheel or too timid to lock horns with the global digital giants.

The question I have is what kind of society will be built under these conditions?

Future Aircraft Systems

I read that there’s lesson to learn from the Maneuvering Characteristics Augmentation System (MCAS) experience that plagued Boeing. And led to fatalities. There’s a lot that has been written about the tragic saga. Much of great value.

It’s true. Aviation advances as the community learns lessons from incidents and accidents. Yes, there’s variability in the effectivity of this learning process. Occasions when oceans are written about one case and dozens of others are given an inappropriate light touch[1]. A trustworthy centralised repository of safety recommendations from published aviation accident reports is a useful tool. A point of reference. In the first months of the European Aviation Safety Agency (EASA) in Cologne, back in 2005, my team established such a database. It’s only possible to track the follow-up of key safety recommendation if there’s a well-maintained administrative system. Safety is often about the intelligent use of data.

Cockpit design, and the human factors issues involved, are without doubt one of the most critical parts of an aircraft. Society is not ready for fully autonomous passenger carrying aircraft. I believe it will happen, in decades to come but the horizon is way off. For certain types of vehicles, autonomy must be the solution given that flight control is beyond human capacities. Here’s I’m thinking mostly of hypersonic and space flight.

For a pilot to exercise responsibility for a flight there’s a need to have, at least, a basic understanding of what a machine is doing. In past times of strings and wires and clockwork instruments that understanding was ingrained knowledge gained from training and experience.

Future aircraft systems will not be easily described as functional blocks that perform well understood and dedicated functions. An autopilot, an autothrottle, autobraking, a flight management system, even an engine. Hybridisation is coming.

That does not mean a pilot must understand the inner working for a multicore microprocessor or complex software algorithm. Flight test pilots being the exception, in this case.

The design goal should always be to make safer systems. Engineering these aircraft systems is not a case of purely fitting together a set of Lego like components. The error made with the MCAS is one that ignored this fact. Interdependencies are manyfold.

Ideally, future aircraft systems, however capable and complex, should be describable, predicable, and ultimately trustworthy. These words sound so simple. One reason this is not simple is that very word – complex. The minute that there’s a massive number of possible combinations and permutations of conditions at may exit boundaries must be set. What’s a little more reassuring is that complexity if far from new in human experience[2].

Just to make the airspace of the future even more complex it’s no longer correct to think of an aircraft as alone and free to make any appropriate manoeuvre. Increasing connectivity, cybersecurity, and artificial intelligence (AI) all come into the mix.

To stay safe, pilots will have to appreciate how constraints and boundaries are managed. This information must be provided transparently and preferable with options.

[1] https://www.iata.org/en/pressroom/opinions/the-safety-paradox-fewer-accidents-greater-responsibility/

[2] https://en.wikipedia.org/wiki/Wheat_and_chessboard_problem

Sustainability in Aviation

Conventional thinking pervades. It’s the model for seeming to be reasonable. To grow consensus and find a middle way through opposing parties. To bend in response to the wind that blows from popular opinion. Institutions are inclined to go this way. This is not surprising when an organisation is set-up to serve a large constituency. There’s the need to emphasise the parts of public policy that coincide with the mission of the institution. To push back gently against the ones that run adverse to that mission too. The Royal Aeronautical Society’s (RAeS) position paper on Airports[1] is a nice example. Here’s a few points that come to mind.

Linking Airports and Advanced Air Mobility (AAM) isn’t such a good idea. Yes, there’s the fact that Airports have infrastructure which every form of air transport needs. That’s the upside. The downside is the competing for resources and high cost of the provisions at major Airports. There’s a degree of environmental saturation that can’t be avoided.

One of the greatest opportunities for AAM is that of entirely new air transport links. Afterall, a Vertiport needn’t take up much space. As long at there’s plenty of electrical power and links with other modes of transport there are exciting possibilities.

A long time ago the commuter class of aircraft operations was created in the US. These were referred to as air taxies (fixed wing). The idea was then to open a travel market at a layer below large transport operation. It wasn’t that successful but does show mixes of types of traffic at major Airports doesn’t work out for the smaller parties.

Regional airports, and their potential, are greatly undersold. It’s wrong to see them as merely part of a hub and spoke network. What they do best is to serve their local communities. Having recently flown through Bournemouth (Hurn) Airport for the first time, it’s clear that so much can be done to spread the load and make traveling again a pleasant experience.

To me, I see the emperor’s new clothes. The case of the expansion of London Heathrow Airport (LHR) is not viable. Dressed up as an investment opportunity this continuation of incremental development is what we do badly in the UK. Environmental saturation has hit the rails. The proposers are dressing up a project that is the proverbial putting of eggs in one basket.

I don’t think the same can be said of London Gatwick Airport (LGW). In fact, squeezing the amount of capacity out of what’s there now is a feat of amazing ingenuity. Surely, that major London airport does need a genuine second runway. Even with less good than needed surface access this former racecourse has the ingredients for success.

Yes, I know it’s difficult to get away from London centric thinking in the UK. Nevertheless, that’s what’s needed to ensure the whole country thrives. Airport policies that lump everything else as “others” or under one label as “regional” aren’t tacking the challenges. The UK as major cities. Each has significant needs for air transport.

Some say that environmental objectives and Airport expansion are not compatible. The difficulties are clear to see. Each area of concern needs resources at a level commiserate with the needs. Quality of life, in and around Airports, should not be traded for economic benefits alone. Tackling air quality, water quality, on and off Airport noise, waste management, traffic volumes, overflight privacy, and enhancing biodiversity are not merely nice to haves.

[1] https://www.aerosociety.com/media/29306/raes-airport-expansion-in-the-uk-position-paper-april-2026.pdf

Human Space Travel

It’s right to point out that space exploration is not solely a scientific endeavour. It’s odd to have to point that out. I do so because there are some purists who think that money should only be spent of space exploration if there’s a tangible scientific gain to be had. This thinking goes back to the agreement that public funds should only be spent of Earthy concerns. A glance at the extensive list of trouble that persist around the globe is one reason to focus on Terra firma rather than up at the heavens. That said, the choice is rarely simple.

Then there’s the accusation that exploration, of any kind, is intrinsically imperial. Powerful entities looking for sources of future dominance and wealth. This is not entirely wrong given humanity’s history of plundering resources from wherever they come. Minerals and trade routes being a couple of the primary sources of interest. A strong political will can be amassed to compete to be first to get a foothold on new territory. Despite all the above there’s something more complex going on.

The recent Artemis II space mission may not have been a great boost to humanity’s scientific knowledge. This adventurous lunar fly-by mission was more about proving technology than gathering an abundance of discoveries. Afterall, the far-side of the Moon can quite adequately be surveyed by automated spacecraft. Much as is being done by robotic machines on Mars.

I think there’s little doubt that 1st to 11th April 2026 will be recorded in the history books. If for no other reason that the gap between the Apollo space missions and Artemis. Like so many schoolboys in the 1960s, I watched those black and white TV images of men on the Moon, as they happened. I became an engineer. Would that have happened anyway? Probably, but I’m not discounting the inspirational impact of the Apollo missions.

[What would we ever do without the writings of the ancient Greeks and Romans. Certainly, naming new space missions would be a lot harder.]

Do we need crewed missions in future? Given the advances in automation and autonomy that have taken place in the last 50-years, so much can be achieved without the need for humans on-board a spacecraft. However, this is not a binary argument. There are, and always will be, the need to take human experience to the absolute limits. President Kennedy cited George Mallory for a reason to explores space, “Because it’s there,” he said.

The simple notion that humans should be constrained and confined to Terra firma runs contrary to our intrinsic nature. Although societies do become more risk adverse as they acquire the comforts of economic success, there’s still an appetite for exploration even if it entails great safety risks. The allure of being the first does not diminish.

Ideally, the combination of adventure and discovery go hand in hand. Space exploration is not just indulging the most adventurous amongst us. Thus, I go back to my proposition that there something more complex going on.

The ancient Greeks and Romans could help. For what is humanity’s destiny? Ad Astra has a meaning. Far more than the movie of that name. Not one of my favourite movies either.

There’s an inevitability that humanity will go to the stars. That is, if in the meantime wars or environmental degradation do not consume us. Exploration is part of a natural progression of intelligent life. It maybe (likely to be) happened elsewhere in the universe too.

Understanding Primary and Secondary Legislation in the UK

Clear again is the conservative politician’s propensity to trade on ignorance. Remember the slogan of the big red bus of the Brexit campaign. All the abject nonsense that was said and written in 2016. It would be extremely charitable to call these intentional inaccuracies. There’s a three-letter word that sums them up. In theory, Parliament has rules. In practice, those rules are abused. That is until miscreants are exposed. Those politicians that misled the House of Commons over parties in Downing Street during the COVID pandemic shouldn’t be forgotten.

It’s a simple question. How many people know the difference between primary and secondary legislation? As far as I know these aspects of the UK’s method of making laws is not taught in schools. I think it’s vital that people of all ages get the opportunity to explore how their democracy works. Including its inherent peculiarities.

[Here’s a national event, later in the year, which can help. It’s free and already possible to plan for UK Parliament Week in November 2026[1].]

Back to the difference between primary and secondary legislation? A tabloid newspaper editor may see that question and fall about laughing. On the basis that the subject is not widely understood, instead of explaining, they may choose to write any drivel that serves their agenda. Day after day this sleight of hand provides bold headlines and support for misleading political campaigns. Then, if the truth pops its head above the parapet cries of Fake News ripple through the right-wing media.

By the way, the sad fact about this common distortion is an erosion of trust[2]. It’s no wonder that Parliament can be seen as remote from real-life. It’s regular inhabitants a strange breed of people who go native as soon as the walk through its hallowed doors.

During the UK’s membership of the European Union (EU) it expanded. In certain specific technical areas, its “competence” grew. Member States agreed to give it new roles and responsibilities. As an example, before aviation legislation was harmonised in Europe, national legislation had to be amended to accommodate every major change that developed. In the UK, both primary and secondary legislation were applied. They are now. That consists of a UK Air Navigation Act and an Order[3]. The Act being the primary legislation and the Order being the secondary legislation. These two rules are not new as they have been part of the UK’s national aviation landscape for decades.

Above here I’ve kicked at the UK’s tabloid media. Well, they are merely doing what they have always done. There’s something in morbid consistency. What’s more disturbing are the lines being taken by a national media that might be expected to be objective. Read this short article and the predisposition shines through, and this is the BBC[4].

Sir Keir Starmer is planning a law which will mean that the UK government can adopt EU single market rules, without a normal parliamentary vote.

One, it’s the personalisation. This is the government of the day and not an individual. Two, it’s the incorrect use of the word “normal.”  As I’ve stated, secondary legislation is perfectly normal. In fact, the UK’s normal regulatory structures depend upon it being in place and up-to-date.

[1] https://www.ukparliamentweek.org/en/sign-up

[2] https://fullfact.org/media/uploads/full_fact_report_121021.pdf

[3] https://www.legislation.gov.uk/uksi/2016/765/contents

[4] https://www.bbc.co.uk/news/articles/c937jkvp3w8o

The False Dichotomy

Like a clock work toy. Wind them up and away they go. It goes something like this. Space exploration is a waste of scarce resources. We’d better spend them fixing problems here on Earth. Compare and contrast as if a viable choice was just to move piles of money from one place to another. This line of argument is favoured by nationalistic green politicians and liberal journalists tasked with filling newspaper column inches. A bunch of academics like to jump on the bandwagon too.

They like to divide the world into billionaire technologists ardently in pursuit of progress at the expense of everyone but themselves and open-toed sandal shoed environmentalists who’ve inherited the legacy of 1970s hippiedom. These two exists, of course, and they have influence, but they are oddities to most people.

So, much of the debates that fill the media are carved out of planks of wood. As if there are only ever two sides to every argument. Two choices to make. Two views open to debaters. As a good liberal, I must reject this dichotomy.

However, to address the subject, I’m corralled into the compare and contrast stock yard.

On the one hand, the environmental challenges before humanity are such that they need ardent attention. The stupidity of “drill baby drill” is mindbogglingly thoughtless. Stupid at a level it’s difficult to comprehend. It’s true that taking short term gains that lead to long term pains is not new. It’s one of humanities troublesome failings. Surely, we can learn from history.

On the other hand, Exploration is human. From the moment primitive bipeds took off across open plains we’ve wanted to know what’s over the horizon. What’s around the corner. Are there opportunities or threats? It’s linked with the fragility of our existence. Space isn’t a boundary that puts a stop to this curiosity. We must see with our own eyes. 

Now, I’ll demolish the false dichotomy. Both above, to degrees, need to be respected. Both can be seen through the lens of human imperatives – safety and security. In fact, to an extent both are linked.

Understanding how to mitigate the negative impact of our technology, we need to develop better ways of doing business. Solar power is an example.

The fate of our planet is better understood by studying other planets, and our own from space. Nature presents itself in a myriad of complex different formula across the universe.

To get away from the either/or mentality there does need to be a marshalling of political will. This is probably the greatest challenge at a global level. I believe we can both confront climate change and progress human exploration. It requires imagination.

Runway Incursions and Airline Safety

Firstly, condolences to the families and friends of those killed in the recent aviation accident at LaGuardia airport in New York. It’s incredibly sad that this destructive runway incident took place in the way that it did. At this stage there is a jumble of international News reports. As is often the case while attention is focused on what happened at a time when the facts have not been verified or data collected.

What is known is that Air Canada Express flight 8646 was where it was supposed to be on a runway and an airport-based fire truck was not. The resulting high-speed collision had disastrous consequences for both the aircraft and the fire truck.

The US National Transportation Safety Board (NTSB) has quickly engaged to start a detailed technical investigation. Their role is to independently piece together all the information that is available and determine a probable cause of the accident. With that to make formal safety recommendations aimed at preventing accidents and incidents.

What I can say is that the subject of Runway Incursion (RI)[1] is a long-standing aviation safety concern. So much so that it has its own accident category when it comes to aviation safety data analysis. Such tragic events are not isolated or extremely improbable.

Air Traffic Control (ATC) is tasked with separating aircraft from each other and any other vehicles. Accidents in this category have been the catalyst for advances in equipment and procedures. That said, there’s no getting away from the substantial number of human and operational factors that pervade this domain.

Unlike the design and construction of aircraft system whereby an onerous safety objective can be stamped on a technical specification. Managing air traffic on the ground is done with a high dependency on the actions of professionally trained staff.

In an internationally accepted code, a RI is defined as:

Any occurrence at an aerodrome involving the incorrect presence of an aircraft, vehicle, or person on the protected area of a surface designated for the landing and take-off of aircraft.

I don’t hesitate to say that’s what happened at LaGuardia. This says nothing about – why?

So, we have an indication of what happened. What’s a little unsettling is how quickly there is News reports speculation on why it happened. Initial references to someone having made a mistake or error are no helpful. This signalling tends to encourage a simplification of the circumstances of the accident into a matter of blame. That unfortunately leads to an impression that this is a rare event that can be attributed to one factor. All to often this is not the case.

The actions of professionally trained staff can be put under such work pressure as it comes to a situation where no normal person can perform adequately. It was the introduction of Safety Management Systems (SMS) that was intended to identify these scenarios and ensure that they were mitigated or eliminated.

The actions of everyone involved with this fatal aviation accident are now under investigation. Aviation is not a “a dangerous business”. However, it is a business that requires more care and attention than most. That includes the provision of adequate resources at all times.

[1] https://www.intlaviationstandards.org/Documents/OccurrenceCategoryDefinitions.pdf

Transitioning to Green Aviation

Put your hands over your ears if your mantra is – drill baby drill. If climate change is a myth, in your mind, or you take a devil may care attitude, then the mere mention of the word “green” may give you the jitters. This is not for you. Move out of the way.

For the rest of us, who live in the real world, on planet Earth, there’s a problem. A prickly, tricky, sticky, long-term global problem. One that has commanded a great deal of attention but sometimes almost to the point of boring the pants off. Transport is one of those sectors that needs attention. Progress toward the adoption of Electric Vehicles (EV) is underway. Now and then, there’s a push back, but the direction of travel is clear. An immediate reminder of the need to change is the volatility of fuel prices at the pump. An inability to control or foresee global events that push oil and gas prices one way and then the next.

Sustainable aviation is turning out to be a hard nut to crack. For ground-based vehicles the issue of power density is not as constraining as it is in aviation. Weight is one of the fundamental parameters in flight. So, current high energy batteries present a particular technical challenge.

Exploring new forms of flight propulsion is a god send for futurologists, researchers and adventurous innovators. None of the technical challenges are a quick win. The avenues for study are infinite. Well almost. Antigravity doesn’t seem to be on the cards – yet.

I guess one of the barriers is that we have a sophisticated global aviation system that we, almost entirely, take for granted. The technology involved in transporting 200 people from a cold, grey, dull, wet Britain to a sunny warm inviting holiday destination has matured to such a point that few look at it with astonishment. That so much is provided for so little outlay.

It wasn’t that the problems of providing such air transport services were easy to solve. It’s an inheritance that has stretched over many decades. Testament to the work of a vast number of smart entrepreneurs, engineers, scientists, officials and alike.

Hydrogen fuel, or some form of hybrid propulsion does seem to be a long-term prospect.

What I see now is the excitement created by past projections is being tempered by practical reality. Wonderful strategic plans, with outlandish charts, pointed the way to a fossil fuel free utopia. Those colourful documents did good in driving forward a level of thinking. Where they offered a lesser contribution is in predicting and enabling a practical transition.

This is the time when everyone does a double take. Where the aim is a workable business cases that provides a transition in a believable, sound and rational sense. Flirting with bankruptcy has been a habit of past adventurous aviation developments. Read the turbulent story of the jumbo jet. Most agree this is not a desirable state to wish for or be in. Maybe this is the tale of the tortoise and the hare. Methodical plodding through the difficulties, incremental change, ingenuity and sheer hard headedness are needed. A couple of points to round off.

One – don’t get stuck on the repetitive nonsense that new developments can’t takes place until the regulatory structure is in place.

Two – don’t build houses on all the small airfields and lesser-known airports that may, one day, become part of a new transport system[1].

[1] https://en.wikipedia.org/wiki/Plymouth_City_Airport

The Mystery of Flight MH370

It’s ridiculous and shocking. In the modern era of civil aviation, that a large passenger aircraft can go missing and never be found. This tragic disappearance that has had experts baffled.

Mysteries, in the early days of flying, were not commonplace. They were, however, sufficiently commonplace for pulp fiction writers and amateur investigators to fill their boots. Mysteries at sea, and in the air have been a fascination for as long as there has been maritime and air transport. As our scientific and technical capabilities have increased so has our expectation that these mysteries are of the past, not the present.

Without any cause for concern, Malaysia Airlines flight MH370[1] took off 12-years ago. The aircraft disappeared from radar and has never been seen since. Parts of the aircraft have been recovered. Unfortunately, those parts provided insufficient evidence as to where the whole aircraft crashed. With what is known, this Boeing 777-200ER[2] aircraft is somewhere in the depths of the ocean. How it got there, wherever there is, and why remain unknown.

The most recent sea search for the wreckage of the aircraft has yielded no findings. Systematically searching the Indian Ocean, an organisation known as Ocean Infinity, has not advanced our understanding of what happened to flight MH370. That might be unfair, since we now know that the aircraft wreckage is not likely to be at the locations they searched.

The vast area of the Indian Ocean has an average depth of over 12,000 feet. Locating an object on the seabed is a hard task even when there’s some idea where it’s resting. To make the task even more difficult, ocean seabeds have a wide variety of geological formations. Mountains, crevasse and flat expanses.

We spend most of our time living on dry land. The reality of planet Earth is that a larger part of its surface is covered with water. That we can be thankful for given what we see of other planets.

Thus, the importance of having the mechanism for location that works anywhere and everywhere. Airborne Communications, Navigation and Surveillance (CNS) is vital in all aspects of international flight. Flight MH370 was equipped with Boeing’s FANS-1 (Future Air Navigation System). This does have a surveillance function in that it provides aircraft position reports via satellite communication (SATCOM).

[In the late-1990s, I was involved in the standards setting and regulatory approval of the airborne components of both the Boeing FANS-1 and AIRBUS FANS-A systems].

Reports of the loss of MH-370 say this aircraft system was working at the point of take-off. Official reports also say that this aircraft system was “deliberately” disabled during the flight. A mystery remains as we may never get to understand the motivation for this action.

There’s no good reason for disabling such systems unless they are presenting a hazard to the aircraft in flight. Clearly the crew need to have the ability to isolate aircraft systems in the event of an avionics bay fire or other significant failure events. Circuit breakers are provided for that purpose. Procedures and training are too.

So many questions. Will the Indian Ocean search be revived again? Not for a while, I think.

[1] https://john-w-vincent.com/2024/12/20/mh370-and-mh17-a-decade-on/

[2] The ER stands for Extended Range.