Tag: History

Aircraft Safety and Fuel Starvation

Unsafe. In common language it’s the opposite to being safe. So, take a definition of “safe” and reverse it. Let’s say to be safe is to be free from harm (not a good definition). That would lead to “unsafe” being subject to harm or potentially being subject to harm. The probabilistic element always creeps in since it’s the future that is of concern. Absolute safety is as mercurial or unreal as absolute certainty.

Let’s apply this to an aircraft. The ultimate harm is that of a catastrophic event from which there is no escape. Surprisingly, taking a high-level view, there are few of these situations that can occur.

Flying, and continuing to fly, involves four forces. Lift, Weight, Thrust and Drag. It’s that simple. An aircraft moves through the air with these in balance. Flying straight and level, lift opposes weight and thrust opposes drag.

Yes, there are other safety considerations. If there are people on-board. For example, it’s important to maintain a habitable environment. At higher altitudes that requirement can be demanding. Structural integrity is important too. Otherwise flying is a short-lived experience.

In the recent Air India fatal accident, the four forces of flight were not maintained so as to make a continued safe flight possible. The wings provided lift but the force that was deficient was thrust.

Two large powerful engines, either of which could have provided enough thrust, were unable to do so. The trouble being fuel starvation. Fuel starvation occurs when the fuel supply to the engine(s) is interrupted. This can happen even when there is useable fuel on board an aircraft[1].

Sadly, in the records there are numerous aircraft incidents and accidents where this has happened. Quite a few fuel starvation incidents and accidents occur because of fuel mismanagement. This can result from a pilot selecting an incorrect, or empty, fuel tank during a flight.

Now and then, it is the aircraft systems that are at fault. The pilot(s) can be misled by a faulty fuel indication system[2]. In one notable case, a major fuel leak drained the aircraft’s fuel supply[3].

When there is useable fuel on-board an aircraft, the imperative is to restart and recover. It is not uncommon or unreasonable for there to be a delay in restarting engine(s), especially when a fuel starvation event is entirely unexpected. Diagnosis takes time given the numerous potential causes of a starvation event.

In cruise flight there is time available to perform a diagnosis and take appropriate corrective action. Both take-off and landing have their hazards. Both are busy times in the cockpit. When looking at the worldwide safety numbers, less fatal accidents occur on take-off than landing. The numbers Boeing provide put take-off at 6% and landing at 24% of fatal accidents. Each one only occupies about 1% of the total flight time.

Although these are the numbers, my view is that, even though take-offs are optional and landings are mandatory, the requirements for adequate thrust are most critical during take-off. This is arguable and it reminds me that safety assessment is never simple.

[1] https://www.faa.gov/lessons_learned/transport_airplane/accidents/G-YMMM

[2] https://asn.flightsafety.org/asndb/322358

[3] https://asn.flightsafety.org/asndb/323244

Impact of Speculation

The sadness of the loss of live and the suffering of air crash victims’ families, must be respected. On 12th June, Air India’s London Gatwick bound flight AI171 crashed after take-off from Ahmedabad airport. Only one passenger walked away from this catastrophe. Additionally, there were fatalities on the ground as the Boeing 787 aircraft came down in a built-up area.

My heartfelt condolences to those connected with this tragic fatal accident.

The technical accident investigation is well underway. In time, a probable cause for this accident will be determined. This will be published and available to all. As per the international arrangements of ICAO Annex 13 a report will be published. Organisations, with appropriate expertise, will carefully sift through the evidence to establish a sequence of events. This is not a matter of establishing blame. It’s a process of determining what happened with the aim of preventing it from happening again.

Meanwhile, the widespread reporting of the accident can only offer speculation as to the details of who, what, where, when and how and why. There are facts. The time, place and the people involved. Media interviews, with whatever pictures and video recording there are dominate the public domain. However, this is far from the volume of information the accident investigators will handle. They will have access to every nut and bolt, every document, every recording.

After another aircraft accident, back in August last year I wrote: Speculation is a natural human response. When faced with a paucity of information we often put together what we know and then make a best guess as to what happened or what might happen. However, wise or unwise it’s not possible to stop speculation.

In the case of flight AI171 the global media speculation has been, and is, of a new order of magnitude. Normally, the authorities caution against giving too much weight to early conjecture. This is prudent in that the obvious is often not as obvious as it might first seem. Accident investigation can be like putting the pieces of a complex jigsaw together. Deliberately and with great care.

What has been surprising in this case is the intensity of the speculation related to this accident both through traditional and social media. The proliferation of experts offering opinions has reached a new high. Until conflict and war grabbed the headlines everyday a novel theory, or a variation of a theory has been offered. Each one chasing credibility and expanding on limited sources.

Let’s not be pious. I’m not immune from this need to fill a void. My own reasonably well-informed theories float around in my head, but I question my senses in sharing them with others. It’s not a fear of being wrong, as I might be, no, more a fear of cluttering up a confusing mass of information to an even greater extent. Piling theories on top of theories.

Can we have too much of “experts” offering their opinions? Some will be trustworthy and considered, and others will not. How far is it reasonable to stretch what little is known into detailed stories of possible cause and effect?

How is the average person going to tell the difference between sound reasoning and imaginative nonsense? This problem was brought home to me in a recent conversation. When a newspaper revelation is told to me as a “fact” when I know it isn’t, then I see the dangers in excessive speculation.

This may not matter so much to me. In so far as it affects me. However, to an air crash victims’ family this not considerate. To be led to thinking that the cause of an accident is generally known, when it isn’t, that’s disrespectful. It’s the downside of speculation. Not something that is ever going to stop, it’s true. What some keyboard warriors need to think about is the impact of their wild guesses or prejudices.

POST 1: Even reputable publishers latch on to theories that are at best well intentioned and at worse just flying a kite. Air India crash: Early speculation points to possible dual-engine failure | Engineering and Technology Magazine

POST 2: To be fair this YouTube commentator does a good job at making it clear what is fact and what is not https://youtu.be/dIgnR0zw3FU

Challenges to Liberty

We live in interesting times. Conflict and turbulence, shifting political loyalties, and rapid technology advances. What a mix.

I don’t want to say – twas ever so. That’s a resignation. To say that challenges and tragedies are of exceptional magnitude in any one era. Since forecasting is such a fragile art, better or worse maybe just around the corner.

What’s unique is our societal expectations. Whereas a serf in a feudal country had little hope of a better life. Today, our higher expectations come from generations of struggle having improved the circumstance of the individual and our communities. Improvements in standards of living, economic, social, environmental, are maintained by an adherence to the “rule of law”. However, imperfect that might be.

The basic stuff still matters. English liberties, in great part, stem from the Magna Carta of 1215[1]. It may have not been immediately successful, as Monarchs and Popes quickly tried to kill it. What’s amazing is that its core content has echoed down the centuries.

Democratic societies have taken on rights, human rights, in their simplest essence. Each of us expects a day in court. A means to defend ourselves from the exercise of arbitrary power.

Yes, for hundreds of years English Monarchs continued to assert what they claimed to be God given powers. Until that came to a head. Literally so. The English Civil War set the rights of the citizen against the arbitrary power of a King.

Where I am now there are signs of that past conflict. In fact, I can see one of from my kitchen window. Surrounded by trees, on the brow of a hill, overlooking a fast-flowing river, is the remains of a castle. Most of Donnington Castle[2] was destroyed but the gate house tower remains. The winning side, Parliament ordered its destruction.

You can understand why I get nervous when politicians assert that they are on a mission from God. Centuries of conflict have bought a citizen’s protections from arbitrary power. To see it return under the guise of personal ambition and careless action is sad.

Yes, there are lots of undemocratic places in the world where this does not apply. Even so, with all its imperfections, English liberty did spread far and wide. It made its way across the Atlantic Ocean. Constitutional practices maybe different but common law prevails.

I hope democratic societies will emerge stronger from this turbulent period. Shifting sand is everywhere. Values are being assailed. Nevertheless, there’s every good reason to believe that a strengthening of our society is possible. A progressive vision offers so much more than a backside into a dark past.

[1] https://www.magnacartatrust.org/

[2] https://www.battlefieldstrust.com/resource-centre/battleview.asp?BattleFieldId=89

The Evolution of Travel

Nothing is stationary. As our solar system circulates the milky way and everything we know is in motion. Nature abhors the stationary. Movement is a part of all living things. Even on dead worlds, like Mars, dust devils whiz across barren surfaces to get caught on camera.

The more we move the more we change. History’s long tail shows that the rooting of people to a place is a temporary affair. What’s changed is our means of locomotion. In the stone age great distances were traversed but not in a hurry. Speed is a modern acquisition.

It is modern. Where I live now is, and has been, a route from East to West and vice versa for much more than a thousand years. For most of that time either our feet or horses where the means of locomotion. Time had to be set aside for perilous and uncomfortable journeys

Travel is a wonderful experience. Even if the time spent between A and B is tedious, draining and eventful in an unwanted way. Adventure beckons in a manner that has always overcome the inconvenience. Certain airlines would never have succeeded if comfort was a must.

In the 17th century getting from London to Bath was a major undertaking. A speed of 30 or 40 miles per day on rain-soaked roads of poor repair there was need to rest up and take a journey in stages. It’s these habits that have shaped the view of traditional England. Gone are the toll houses and the highwaymen but the routes and public houses remain. Well, fewer and fewer of them as business is tough[1].

Travel is that perennial hope, that there is a silver lining to every cloud, that good times are only just around the corner. That in travel we will see, hear and experience something new and to our benefit. It’s not a free lunch. Effort must be made to reap this benefit. It’s there in the word. It’s the Norman-French origins of travel. Travail is to work and labour.

Ironically, although there are exceptions, modern society is trying to make travel as little effort as is possible. Even to the extent of automating vehicles when the demand for such innovations is minuscule. It’s not increased comfort or convenience that’s the aim. No, it’s to dissect time into even smaller parts so that people do not “waste” time travelling.

In an age before concrete and steel carved a path through the English countryside, a journey was a venture to be planned and considered with trepidation. A land of fields and meadows, rivers and streams, and notoriously changeable weather.

Comparisons with today do fall by the wayside. Towards the end of the 17th century the population of the whole of the country was only about 5 million. Creeping industrialisation was drawing people into the cities. Change was on the way.

[1] Hard Times of Old England https://www.youtube.com/watch?v=MoWEiq_Z0aw

Peaceful Border

It’s superfluous to say so. Canada is not the US, and the US is not Canada.

It quickly becomes clear. I’ve been fortunate to visit places east-west and north south. Although not the far snowbound North. The two countries do share geography. Rocky Mountains stretch across the North America. From British Columbia to New Mexico. The Great Plains span North America. A stark contrast to the mountains, as a huge expanse. In the East, the rolling landscape of the Appalachian Mountains runs from Newfoundland to Alabama.

It’s not the same with social and economic geography or history. A profound difference has been forged by Canada’s citizens over a couple of hundred years.

If we look back to the late 17th and early 18th centuries the new world was a hugely different place than it is now. Britain, France, Spain, and their allies were fighting over vast territories. European conflicts translated into competition and trade wars. Eventually, America colonialist brought about a revolution, so there would be no need for royalty, aristocracy, or an imposed church. Rejecting their British masters, even if they did keep their system of laws.

At the start of the 19th century, the US did invade Canada with a couple of conflicts. So, the idea that the US may wish to annex a part, or all of Canada is not entirely new. I’m going to have to read up on the Battle of Stoney Creek of 1813. It seems a namesake of mine played a pivotal role in preventing the US from taking Canada[1]. No relation – I’m (almost) sure. Irish heritage.

My assumption is that US President Trump is doing what he has done times before. Mark out an extreme position from which then to shape future negotiations. That’s not so mad as it might appear. It’s not nice when considering the cordial relationships that have characterised so much of the recent past. Kicking at the sides of an ally.

Stretching over thousands of kilometres (or miles if you prefer), the boarder between the US and Canada is one of the most peaceful in the world. To reignite conflicts of a couple of hundred years ago is not a wise option. I’m sure Canada could call upon a great deal of support if the worst-case scenario were to prevail.

Mutuality may not be fashionable. It needs to be made fashionable, again. The notion of a win-win scenario where both parties benefit, it’s real, it’s not mythical. Both US and Canada are sovereign. It’s best for the world that it stays that way.

[1] https://www.biographi.ca/en/bio/vincent_john_7E.html

The Legacy of Paine

Reading a little of Thomas Paine’s rantings about the inequities of monarchy, it’s clear why he is remembered as a key part of the story of American Independence.

It’s not surprising that he viewed the British institutions of the 17th Century as arbitrary and tyrannical. An Englishman fervently attacking his country of birth. Pointing out every flaw and deficiency in respect of the condition of the common man.

He was a revolutionary provocateur and a provocateur of revolutions. His widely read pamphlets, the social media postings of the day, stimulated the American Revolution. A cry for freedom and escape from everything he thought rotten in Europe. America being a potential beacon of hope. Denouncing the English aristocracy sealed his fate. Now, he known as a founding American. So, where are we after 250 years[1]?

Europe to a great extent, slowly but surely, followed the American experiment. The power of privilege, the monarch, the aristocracy diminished, and the common man, and eventually woman too, asserted their rights through the ballot box.

Britain, although there are committed republicans, hasn’t thrown off the monarchy. It’s adapted its role in such a way that it retains popular public support. Europe has many “bicycling” monarchs who hold colourful ceremonial roles mostly as a celebration of traditions.

Are the roles of the continents reversing? Are the American States drifting towards a new monarchy? That concentration of arbitrary power and privilege in one place. It’s a situation for political philosophers to ponder.

Take recent utterings in the News that are wholly wrong. The European Union (EU) is in part, so that Europeans can be more like Americans. That’s not a popular thing to say so I’d better step with care. Although, much as changed in the post-war world, federalism isn’t coming to Europe any time soon.

The EU solves the historic diplomatic problem of asking – I want to call Europe. Who do I call? Recent generations in both continents have benefited tremendously from the constructive and positive dialogue across the Atlantic.

Back to my question. Are the roles of the continents reversing? Imagine Europe as the premier global bastion of freedom, democracy and liberty. A renaissance of enlightenment, of free speech and human rights. Perhaps it is already.

Sadly, it would be wrong of me to record this as fact. With the rise of populism and right-wing fantasists, we would do well to go back and read Thomas Paine. Although, that’s not an entirely a clear-cut line to take. Paine was very much in favour of small government and self-reliance. Traditional Republican themes. I’ll take his revulsion at tyranny.

[1] The Bicentennial culminated on Sunday, July 4, 1976, with the 200th anniversary of the adoption of the Declaration of Independence.

Two Centuries

The News can be overwhelming. It’s a constant barrage of terrible calamities, inadequacies, and past failures. I guess, that’s the manner of the daily News cycle. Put out a positive press release and watch it get ignored. Report of catastrophes and every media outlet copies the stories.

It’s as well to remember that within a week a new round of headlines displaces what was there before. It’s as well to step back. Perspective is an interesting phenomenon. It condenses the past, so that we see the major events more clearly. The nitty gritty of the everyday often fades and only the significant happenings remain.

Let’s dabble in the macro and not the micro. What’s the big picture? It’s time to do a simple comparison. Take the first 25-years of the 20th Century and compare with the first 25-years of the 21st Century. Certainly, at the end of this year a complete summing-up could be done.

For now, I’ll do a random sweep across those two generations separated by a century.

Let’s think. There were no powered aeroplanes in 1900[1]. Few had an inkling that a world war was on the way. We were just figuring out what an Atom might be. Even the motor car was mostly for wealthy folk. The railways were king.

In 2000, I remember the optimistic fireworks and the controversy over the millennium dome. The forgotten panic of Y2K now seems strange. The World Wide Web[2] was getting traction amongst geeks. Mobile phones were gaining ground. Few saw the attack of 9/11 coming.

Being a child of the last century it’s easier to appreciate the changes. Let’s face it, today’s 25-year-olds had history lessons about subject that many people lived through. Although, there are a growing number of centenarians, most of them were in inkling in the parents’ eyes or babies pre-1925. Thus, we need to relay on the writers of history.

Here’s a proposition that warrants testing. Compared with the first 25-years of the 20th Century nothing much has happened in the first 25-years of the 21st Century. I know any division in time is an arbitrary matter. The Earth spinning on its axis cares little for human affairs. 24 hours in a day come and go whatever we do. That said, my proposition above does run contrary to the way people may feel about time passing. If indeed it does pass.

In both periods we might measure significance by the impact events have on people. There’s a propensity to say that world wars top the list in any account. That may well be fair. However, if we look at the growth in global population and the general improvements in human health despite that fact, then this is the greatest point to note.

When I say, nothing much has happened between 2000 and 2025, by comparison, it’s more to do with the pivotal moments that led to the creation of the technologies that we all now take for granted. Mastering the elements of science has made the biggest difference.

I’d say, in the public and social field, of politics, philosophy and economics[3] and we are as perhaps foolish as we have ever been. Convince me otherwise.

[1] https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/powered-aircraft/

[2] https://www.w3.org/People/Berners-Lee/Weaving/Overview.html

[3] https://www.theguardian.com/education/2017/feb/23/ppe-oxford-university-degree-that-rules-britain

Relationship with the EU

Monday, Monday[1]. It’s a wonderful 60s song. Harmonies and mood are perfect. I wonder if the harmonies and mood will be perfect for the Prime Minister (PM) on Monday. Already the Sunday Press are setting the stage for Monday’s performance.

Reset, recalibration, reheat, rekindle, re-whatever. It’s a moment when relations between the UK and the European Union (EU) can make realistic progress[2]. In world full of uncertainty (could be a song in that one), for once the direction of travel is a constructive and positive.

I think the word “deal” is getting overplayed. Indications are that there’s no fundamental shift from Brexit meaning Brexit, as one former PM liked to say. In fact, the current PM is being highly cautious in the light of his Party’s reading of the latest opinion polls. For no sane reason I can think of, the swivel-eyed loons of the far-right are making hay.

It’s astonishing me how dim-witted the Conservative Party is in objecting to something when they don’t even know, for sure, what it is. Mind-blowing. And the rum cult of Reform Party doing the same with extra bile. What a load of prehistoric fruit loops.

Brexit supporters are spreading misinformation, again. Saying that UK has no influence. It’s true, the UK doesn’t have votes in the European Council or Parliament, but significant influence can be exercised on standards, and regulatory guidance, nevertheless. A better “deal” can bring much greater influence. Absolutely vital in the digital world, and for the UK, a country with a services-based economy.

Brexit has cost the UK dearly. The UK Treasury would have billions more in its coffers if the 2016 referendum had never taken place. The standard of living of every person in the UK is lower because of Brexit bungling. Ideally, that great mistake is an event to be written up for the history books and then forgotten.

On top of the above, uncharacteristic moves in the US, with Trump tariffs there’s nasty hit at the UK’s future prosperity. There couldn’t be a better time to repair relationships with the UK’s nearest neighbours. The countries with which we share most of our long history.

Even for those on the political right, practically, the EU is never going away, so until the day the UK rejoins the block, it’s wise to have the best possible relationship in all matters. Goods, services and people need to connect as a case of mutual benefit.

It’s time for hope. An optimistic tone should be set. A smile. Let’s hope we are singing Monday, Monday so good to me, Monday morning was all I hoped it would be. Naturally, that there be no crying, come Monday evening.

[1] https://genius.com/The-mamas-and-the-papas-monday-monday-lyrics

[2] https://www.independent.co.uk/news/uk/politics/brexit-uk-eu-reset-trade-deal-starmer-b2752285.html

Action Shapes Outcomes

There’s a foolishness that comes with great power. It gets played out every day over the News media. It’s when notable person x or y says words to the effect; nothing will happen unless I do it. This common notion gets projected to us through mass reporting and commentary.

Every second is a pivotal moment. A last chance to move, or a last chance to act. As if time stops when we know it branches into countless possibilities. Fine, pivotal life or death moments do exist. It’s only that they are less numerous than we might be led to think. Drama takes its place in the theatre of the everyday[1].

There’s an ancient lesson to learn. It goes like this, in a simple demonstration. Place any finger into a glass of clear water. Now, remove the finger and observer the hole.

It’s a lesson Archimedes would appreciate. Although he’s famous for displacement being an indicator of what’s doing the displacement. Between the two it’s the water that’s the constant. The ebbing and flowing of time. At least as we humans perceive it.

It’s not that an individual can’t make a difference. Far from it. Individual action can make a dramatic difference. Doing the right thing at the right time, if the opportunity arises, can be the difference between catastrophe and nothing much in particular, as an outcome. In the world of major accidents, designers and operators desperately try to avoid the possibility that a single act or failure that leads to catastrophe, but it does, on rare occasions happen.

The point in discussion is the matter of what is indispensable. How often do we get to choose what is indispensable? After an event, it’s easier to answer the question. Looking back, it can be said that the factor that made the most difference was this one or that one. Before an event, we are in the land of probabilities and shiny crystal balls. Mathematics and mysticism.

The Cuban Missile Crisis[2] offers a lesson. It was only in retrospect that people learned of the action of a Soviet Naval officer who prevented a submarine from launching a nuclear torpedo.

History tells how the pivotal moment arrived. That said, there was no way the man concerned knew before time that his role would be indispensable. History would be written dramatically differently if a nuclear engagement had happened.

In the end it comes down to doing the right thing at the right time when the opportunity arose. Sometime swimming against the tide of events. Not magic exuded by a powerful individual strolling the stage.

POST: A better one. All The World’s A Stage By William Shakespeare · Jim Broadbent https://youtu.be/gUJBEy-tbo0?si=NMkIRpIr8H0wdTgv

[1] https://youtu.be/caaPlIX6AkM

[2] https://www.jfklibrary.org/learn/about-jfk/jfk-in-history/cuban-missile-crisis

Exploring a Riverside

Riverside walks can be pleasant ways of spending a sunny spring evening. That’s what I did on Friday. Sun shining with a cool breeze sweeping through the trees. Underfoot even the unmade-up paths were dry, which is testament to the rainless weather of recent weeks. Even so, the riverbank showed signs of the flooding of the winter.

Reading is a town[1]. It’s England’s largest town. Now, I didn’t know that until I looked it up. The largest English town that I’ve been familiar with over the years is Crawley in Sussex. I think of that as a large town but it’s less than half the size of Reading. It’s the railway that makes Reading. Reading railway station was the last stop on the Great Western Railway (GWR)[2] when it was first opened in 1840. After that the railway forged west to be what we know now as the main thoroughfare across southern England.

Reading town has a long history. That’s no surprise given its position on the river Thames. It’s where the river Kennet, the canal and the river Thames meet. An obvious place for trading since Roman times. It’s a commercial town. Glass sided office blocks and Victorian brick work. For all that it doesn’t stand out as an architectural masterpiece.

Another surprise for me was leaning that town twinning is alive and well. That Reading in twined with Düsseldorf in Germany. A city more than twice the size of Reading. In fact, until this last year, I’ve been more familiar with Düsseldorf.

Our walk ended at The Fishermans Cottage[3]. I’m happy to recommend this small riverside pub.

From there, on the walk back to the railway station I did see the one of the more notable sites in Reading. That’s the Banksy’s Great Escape artwork[4] on Reading prison wall. Oscar Wilde spent time in that jail. The artwork has got a Perspex cover to keep the pigeons off. And anyone else who might think of spraying it.

That reminds me. It’s not unusual to have a phobia about dogs. Although dog owners mostly have a difficulty in getting their heads around the fact. On my riverside walk dogs were not the problem. Amongst our small group of walkers had a different phobia.

As we got to the confluence of the Thames and the Kennet, we discovered the phobia of one of our walkers. Alfred Hitchcock would approve. The Kennet’s tow path attracts Swans. These Swans are attracted by people with food. With no inclination to get out of the gently flowing river these lazy Swans wait for passers-by to pay attention to their needs. That’s no problem.

It’s called Ornithophobia. A fear of birds. Birds flock when free food is on offer. The worst of these can be thought of as flying rats. I talk of pigeons. That how I think of pigeons. Tom Lehrer[5] had the right idea about these annoying birdies. Frightening them away, at least for a moment, cleared our pathway. Like a flash they returned as we strolled into the pub.

[1] https://www.reading.gov.uk/

[2] https://www.gwr.com/stations-and-destinations/travel-inspiration/blogs/history-of-the-railways

[3] https://www.tripadvisor.co.uk/Restaurant_Review-g186363-d7363678-Reviews-The_Fishermans_Cottage-Reading_Berkshire_England.html

[4] https://banksyexplained.com/create-escape-march-2021/

[5] https://youtu.be/yhuMLpdnOjY