Plug and sigh

Daily writing prompt
Jot down the first thing that comes to your mind.

Weird, I know. My first thought as I looked across my tatty desk. Cables are irritating. Even the alternative is irritating. Tapping away at this keyboard I’m tied by a slim black wire that runs off into a darkened place. If I had a wireless keyboard, I’d be doubly irritated. Sure, as eggs are eggs the battery would not be charged when I needed it to be charged. And I would have put the battery charger away in a box and forgotten where I’d put it.

They’re everywhere. Cables and connectors. This could be the century of the cable, much a the last one. Dam things are cash cows too. Companies like to extract the maximum consideration out of us. Our fantastically capable new tech is useless unless we dip into our pockets and buy cables with just the right connector[1].

Fine, there have been attempts to overcome this bond we have with wires. Wireless charging and wireless connections don’t always deliver what they say on the box. They can be as much faff as plugging in cables. Physics dictates those energetic electrons like conductors. When power is needed, travelling faster and further through wires. Whizzing along with the potential to do work wherever they end up.

If I take the bigger picture, the situation is not so simple. Wires dedicated to communication are going out of fashion. Once upon a time copper wires brough the telephone into the house. Now, that communication is optical. Light flashes to the tune of the ones and noughts we seek.

Getting power from A to B, storing it and using it as needed, there lies unending challenges. From the mega to the micro level. Controversies about huge electricity pylons straddling the countryside. To powering the lean electronics hidden in the plastic case of my keyboard.

Oh! I have slipped the surly bonds of wires. And danced the earth on laughter-powered things.

To borrow a poetic line on flying[2]. If only we could loose this bond forever. Unlikely as it seems. In my profession we contend with the fact that civil aircraft, where lightness equals profit, there’s between 100 and 200 miles of wires.

Let’s think. Will this be perpetual? Put aside all the steps that machines may advance, at some level they come down to wires and multiple connections. In a way, lucky for us. That means there will always be an off switch.


[1] https://newsthump.com/2018/05/21/man-decides-to-keep-box-of-cables-hes-has-since-2002-for-another-year/

[2] https://www.poetryfoundation.org/poems/157986/high-flight-627d3cfb1e9b7

Safety Analysis

In discussions about safety one model is often called up. Its simplicity has given it longevity. It also nicely relates to common human experience. The model is not one of those abstract ideas that take a while to understand. If you have been on a safety training course, a lecturer will give it couple of minutes and then use it to draw conclusions as to why we collect and value safety data.

On illustration, and it’s a good one for sticking in the memory, is a picture of a big iceberg. Most of an iceberg is underwater. One the surface we only see a fraction of what is there. This is the Heinrich pyramid. Or Heinrich’s Law[1] but it’s not really a law in the sense of a complete mathematical law.

The logic goes like this. In discissions about industrial major accidents, there are generally a lot more minor accidents that precede the major ones. Although this was drawn up in the 1930s the model has been used ever since. And we extend its useful applicability to transport operations as much as workplace accidents.

Intuitively the model seems to fit everyday events. Just imagine an electrical cable carelessly extended over the floor of a hanger. It’s a trip hazard. Most of the time the trips that occur will be minor, annoying events, but every so often someone will trip and incur a major injury.

What we can argue about is the number of precursor events that may occur and their severity. It wouldn’t be a simple universal ratio, either. Heinrich said there were generally about 30 accidents that cause minor injuries but 300 accidents with no injuries. A ten to one ratio.

Forget the numbers. The general idea is that of the iceberg illustration. Underlying that example of the pyramid is the notion that there are a lot more low severity events that occur before the big event happens. Also, that those low severity events may not be seen or counted.

It’s by attempting to see and count those lesser events that we may have the opportunity to learn. By learning it then becomes possible to put measures in place to avoid the occurrence of the most destructive events.

In British aviation I will reference the 1972 Staines air accident[2]. A Brussels-bound aircraft took off from London Heathrow. It crashed moments later killing those onboard. One of the findings from this fatal aircraft accident was that opportunities to learn from previous lesser events were not taken. Events not seen or counted.

Thus, Mandatory Occurrence Reporting[3] was born. Collecting data on lesser events became a way of, at least having a chance of, anticipating what could happen next. Looking at the parts of the iceberg sitting under the water.

How many fatal accidents have been prevented because of the safety analysis of data collected under MOR schemes? If only it was possible to say.


[1] https://skybrary.aero/articles/heinrich-pyramid

[2] https://www.bbc.co.uk/news/uk-england-surrey-61822837

[3] https://www.caa.co.uk/our-work/make-a-report-or-complaint/report-something/mor/occurrence-reporting/

The Curious Case of Lists

How on earth does a humble soul like me make any comment at a time like this? Adding to the realms of things already said seems a bit pointless. We now have echo chambers sounding in echo chambers. Instead, I’ll take a sideways look. Mention one or two of the items that struck me during the week.

Penguins are getting a lot of Press. Ever since Trump decided to slap a tariff on an island inhabited by penguins there’s been a lot of speculations as to his ultimate motives. If I take Feathers McGraw as an example, I can well understand the need to make a pre-emptive strike against such a potentially villainous bird.

Of other notable penguins, I can only surmise that Trump has never heard of Pingu[1]. Now, there’s a subversive penguin if ever I saw one. He originated in Switzerland, which is strange to say the least.

I almost forgot another memorable fictional penguin of the past. A threatening comic character that combines menace with a gentlemanly swager[1]. One of Batman’s greatest foes. A well dressed master criminal unlike other criminals one might mention.


[1] https://youtu.be/yxqz9JqXdJU

I forgot it this year. Next year, I will pay attention to Penguin Awareness Day. 20 January might be winter to us but its summer to them. Birds that have the decency to dress up in black and white dinner jackets deserve some respect. I for one, will express my concern that the exports of our feathered friends may be taxed. Could it be that Trump is confused. Afterall the real penguins love the ice in the southern hemisphere. In fact, nowhere near Greenland.

“I’ve Got a Little List”. There’s a phrase that comes to mind. Lists, one in particular, does seem to have hit the News this week. I ask, why is there no modern-day equivalent of Gilbert and Sullivan? Accepted, companies do play with their songs and make words to fit the situation of the day[2]. There’s a great deal of scope for new lyrics.

The fabric of social media would rupture if there were no lists. I’m often entertained by an animation that shows a compilation of data as it ripples through the years. Something with colourful bar graphs that go up and down as the rank and order changes. A musical accompaniment that has no relation to what’s being presented. Lists are captivating. They spur a natural curiosity to look for the item of most personal interest. So, over time the economy of X or Y country goes up and then down and then up again. For sure, nothing stays the same for long. That maybe the moral of the week.


[1] https://youtu.be/7Uoug3d3AJE

[2] https://youtu.be/1NLV24qTnlg

Key Milestones in Safety Management

One chunk of a recalling of the path civil aviation has taken in the last 40-years is called: Safety Management Systems (SMS). It’s a method or set of methods that didn’t arrive fully formed. It can easy be assumed that a guru with a long white beard stormed out of his quiet hermitage to declare a eureka moment. No such thing happened.

Through every part of my engineering design career the importance of reliability and quality systems was evident. Codified, procedural and often tedious. Some say the quality movement had its origins in the world of the 1960s moonshot and the advent of nuclear weapons. I don’t think there’s a single spring from which the thinking flows.

That said, there are notable minds that shaped the development of standardised quality systems. Acknowledging that the Deming Cycle[1] is core component doesn’t take too much of a leap. It’s a simple idea for capturing the idea of continuous improvement. Aerospace design and production organisations adopted this method readily.

Those first steps were all about the Q word, Quality. How to deliver a product that reliably worked to specification. At the time the S word, Safety wasn’t spoken of in the same way. There had been an underlying presumption that quality success led to safety success. However, this was not entirely true. An aerospace product can leave a factory 100% compliant with a pile of requirements, specifications and tests only to subsequently reveal failing and weaknesses in operational service.

In the saddest of cases those failing and weaknesses were discovered because of formal accident or incident investigation. In civil aviation these are conducted independently. Worldwide accident investigators and aircraft operators often detected a lack of learning from past events. This situation stimulated activities aimed at accident prevention.

In 1984, the International Civil Aviation Organization (ICAO) published the first edition of its Accident Prevention Manual. This document introduced concepts and methods aimed at accident prevention. It was a pick and mix of initiatives and processes gleamed from the best-known practices of the time.

One of the jobs I had on joining the UK Civil Aviation Authority (CAA) Safety Regulation Group (SRG) was to work with the ICAO secretariate on an update to the Accident Prevention Manual (Doc 9422). The UK CAA has long been an advocate and early adopter of occurrence reporting and flight monitoring. Both were seen as key means to prevent aviation accidents.

It was envisaged that a second edition of the manual would be available in 2001. That didn’t happen. Instead, ICAO decided to harmonise information available on safety and put that into one manual. At that point safety information was scattered around the various ICAO Annexes. Thus, the content of the Accident Prevention Manual was consolidated into the Safety Management Manual (SMM) (Doc 9859). This new document was first published in 2006.

There’s much more to say since the above is merely a quick snapshot.


[1] https://deming.org/explore/pdsa/

1985 to 2025 Trends

On reading J. C. Chaplin’s paper on the first 100-years of aviation safety regulation in the UK[1], it struck me that the journey from the 1910s to the 2010s was one of constant change. That change has not slowed down. In fact, the last 40-years of my aviation career have seen dramatic technological changes that have demanded ever new regulatory methods and practices.  

Overwhelmingly aviation history writings obsess about the early days of flying or the start of the jet age. It’s as if those periods were so dominated by great pioneers that nothing worthy has happened since. I exaggerate for effect, but I think you get the meaning of my comment.

So, what of the race from the 1985 to the 2025? I think that is useful period to look at. One of the reasons is that those years are mark the transition from an analogue era to a digital one.

The early 1980s saw experimentation with the potential for digital technologies, most particularly fly-by-wire systems. Quickly the military understood the increase in aircraft performance that could be gained by use of such technologies. Groundbreaking was Concorde in that it demonstrated that critical electronic control systems could safely go into everyday operation. That project drove the development of new regulatory methods and practices. 

A turning point occurred in the mid-1980s. That silicon revolution that impacted so much of life was dramatically put to use in civil aviation. Computing power had so miniaturised and become affordable so that past theoretical possibilities could now be practically realised.

The Airbus A320 aircraft first flew in 1987. It was a shaky start. Not everyone was convinced that safety critical systems were indeed safe. The not so obvious discovery that the human factor was even more important for a computerised aircraft. Learning to adapt and adjust ways of operating didn’t happen overnight.

The lesson is that learning lessons must be part of the process. Through applying continuous improvement, the Airbus A320 family has grown ever since.

Maybe there needs to be a short paper to cover civil aviation safety regulation from 1985 to 2025. It’s needed now. It’s needed because the next 40-years are going to see equally dramatic changes. In the time to come the main driver will be the environment.


[1] https://www.aerosociety.com/media/4858/safety-regulation-the-first-100-years.pdf

Exploring Sunday

To the rationalist everyday is the same. Earth turns on its axis. We all experience day and night. Day and night change as the season change. It’s all mechanical and predicable. Even the builders of Stonehenge knew that there was a rhythm to the year.

Last night, to mark that transition between the cold winter months and spring, the clocks went forward one hour. So, I’m already out of sync with my normal routine. Happy with it. Those extra hours of light in the evening are a great joy. Time to get the garden in shape.

This seventh and last day of the week, has a marker too. Christian communities see this day as a day to take stock, to rest. We don’t entirely observe that tradition anymore, but it is a different day. A day when life takes a slower pace.

If I go back to my youth, Sundays were distinct. The day was always a time set aside for visiting relatives. Now and then, a church or chapel service in the evening. West Country village life was one of compromises. We went backwards and forwards between the Church of England and a small Methodist chapel in an adjoining village.

Sunny spring and summer Sunday evenings could be unlike every other day. Until my parents gave up the dairy, and reliance on a cheque from the Milk Marketing Board[1], everything we did had to fit around milking time. Cows have internal clocks. They know when the time has come for milking.

Lighter spring evenings opened the opportunity to go visiting or, as we often did, going for a drive. All six of us would get packed into the family’s Wolseley 16/60. Dad would head off over the hills and vales of Somerset and Dorset to get some relief from the constant demands of the farm. Later on, the 16/60 was replaced by a newer bright white Wolseley 18/85[2]. A quite dreadful car to ride in. It was a time when the British car industry was desperately trying to modernise. The Japanese had started to produce cars that were starting to offer better value and reliability.

Cruising around the country lanes was not only an opportunity to get out and about, but this was also a way of looking over the hedges and surveying the landscape. Finding out what the neighbours were up to. Checking out some new farming venture that was being talked about at market. Criticising poor husbandry or the dereliction of what was once a “good” farm.

This childhood experience has left me with a curiosity. Could be inherited. That need to know what’s around the next corner or just over the brow of a hill. It’s imbedded. Naturally, that curiosity was stimulated by the unending variety of the topography. On my trips to America, it has always struck me that driving for miles and miles can be easy, but it takes a long way for the sights and sounds to change. Somerset and Dorset, and I mustn’t forget Wiltshire, have a world around every corner. Sundays were explorer days. Adventure days too.


[1] https://discovery.nationalarchives.gov.uk/details/r/C179

[2] https://www.wolseleyregister.co.uk/wolseley-history/blmc/1885-six/

Hovercraft Travel

Inventions full of promise. In the 1950s a British inventor seemed to have a solution to a lot of transport problems. How to travel at speed over a variety of surfaces. Christopher Cockerell, like so many inventors of the past, had difficulty in convincing people of the usefulness of his invention. He persisted and the commercial Hovercraft was born.

It’s not that traveling on a cushion of air had never been considered before. It’s more a question of the fact that it took until the 20th century for all the components (engines and materials) to become available to make a practical vehicle.

It’s not a boat. It’s not a plane. It’s an air-cushion vehicle. Underlying this is the question of who takes responsibility for these vehicles? I know this with reference to those who I have worked with over the years. In the 1990s, it was the Civil Aviation Authority (CAA) that issued a Certificate of Airworthiness for these craft. Today, they are addressed under marine regulation.

The backward and forward of the arguments as to what a “Hovercraft” is defined as, surprisingly goes on at length. It’s flexibility in being able to rapidly traverse water and land without alteration is an asset but a minefield for lawyers[1].  

Yesterday, I took the passenger Hovercraft service between Southsea (Portsmouth) and the town of Ryde on the Isle of Wight. It’s the fastest way to get from the mainland to the island. 10 minutes across the water.

This for me was to revisit a trip that I often made in the 1990s. I’d drive down from London Gatwick early in the morning. Try to fit a breakfast in before taking an early Hovercraft across to the Isle of Wight. Memories of arriving at a desolate car park in the cold and wet stuck. There I’d be picked up and ferried to Britten-Norman[2] for the day. The Britten-Norman aircraft company had its headquarters in Bembridge.

Although the Islander is a small aircraft its owners liked to equip it with an array of different modifications. My job was the approval of modifications. All done, at the time, under British Civil Airworthiness Requirements (BCARs).  It was one overseas mission I enjoyed a lot.


[1] https://api.parliament.uk/historic-hansard/commons/1968/may/16/hovercraft-bill

[2] https://www.theengineer.co.uk/content/news/islander-aircraft-production-restarts-on-isle-of-wight/

The Revolutionary Role of Hydrogen

Hydrogen has a history with aviation. What could be better. A gas that is so light. So easily produced and with no need heat it up. With a lightweight gas-tight bag and a fair amount of rope, balloon construction took-off. Literally. The proof that hydrogen gas could lift a balloon goes back to the 1780s in France.

Sadly, the downside of this gaseous element is its propensity to combine with other elements. In fact, where would we be without liquid water. On this planet, that most basic and prolific combination of hydrogen and oxygen. Not so much sadly but more luckily.

Step forward about 250 years and we have a different vision for hydrogen in aviation. If it’s combined with the oxygen in the air that we breath, we get nothing more noxious than water. Since, the other forms of combustion, that populate our everyday lives, is distinctly noxious, surely hydrogen has a lot to offer. Talk about downsides. Burning fossil fuels is distinctly unsustainable. Polluting the atmosphere.

This week, I was looking out to sea. At the English Channel (No name changes there, I see). Standing on the pebble beach at Budleigh Salterton. They ought to have an award just for that name. It’s a small seaside town in Devon. The towns cliffs are part of a World Heritage Site, namely The Jurassic Coast[1]

Forget the 250 years of humans flying, cited above. About 185 million years of the Earth’s history is for all to see on the Devon and Dorset coast. When we say “fossil fuels” what we mean is that we are living off the back of Earth’s history. Society powers modern life on dinosaur juice. Well, not exactly but plant and animal life from hundreds of millions of years ago. How crazy is that?

Hydrogen, on the other hand, is one of the most abundant elements. It’s everywhere.

Modern day dinosaurs (politicians and pundits) insist that we continue to exploit dinosaur juice until it’s all gone. That’s putting aside any concerns about returning all that carbon to the Earth’s atmosphere. Carbon accumulated over millions of years.

Hydrogen can be a clean fuel. The problem is that saying that and then doing it are two different things. There are complexities that come with using Hydrogen as a fuel. It might be reasonably easy to produce, in multiple different ways, but it’s not so easy to transport.

Producing leak proof systems for transport and storage requires innovative thinking. We can’t just treat it with the familiarity of conventional fuels. Whole new regimes are going to be needed to get Hydrogen from where it’s produced to where it’s needed.

Producing leak proof systems for aircraft is a challenge. Given the odourless and invisible nature of this light gas, accurate and extensive detection systems are going to be needed. If the gas is to be consumed by fuel cells to produce electricity, then there’s going to be a constant struggle against complexity and significant expenditures.

What is reassuring is that none of the above is insolvable. At this time in history, we have the materials technology and control systems that make Hydrogen a viable clean fuel.


[1] https://jurassiccoast.org/

Understanding Aviation Safety

The recent dramatic events in Toronto brought to mind the equally dramatic event of Air France Flight 358 back at the latter half of 2005. Then a large aircraft was destroyed but the crew and passengers got away without fatalities. The combination of bad weather and poor decision-making led to a catastrophic runway excursion.

I remember that the year 2005 shook the aviation community. There was a whole succession of fatal aircraft accidents across the globe. In Europe, Helios Airways Flight 522 was particularly tragic. Errors led to the crew suffering hypoxia and as a result the aircraft and everyone onboard was lost. In Italy, lives were lost as an ATR72 aircraft ran out of fuel and plunged into the Mediterranean Sea near Palermo.

West Caribbean Airways Flight 708 fell from the sky killing all on-board. Kam Air Flight 904 hit a mountain killing all on-board. In Indonesian, Mandala Airlines Flight 091 crashed. A few passengers survived but many people were killed on the ground.

I sincerely hope that 2025 is not going to turn into another 2005. However, I do take the view that there is a cyclic element to the occurrence of fatal accidents. We are often proud to be able to say that the time (number of years) between one cluster of aviation accidents and another grows as overall safety improves but we are a long way from zero-accidents.

The global aviation industry is an incredibly safe industry when considering how many passengers are carried every year. However, zero-accidents remain an illusion however it might be touted as the ultimate goal.

As safety practitioners try to be ever more pro-active in our safety regimes there’s inevitably a reactive element to aviation safety. The aftermath of the 2005 experiences led to ICAO holding its first high-level safety conference in 2010 in Montréal. There have been two more such conferences since. One in 2015 and one in 2011.

The results have been to push the aviation industry towards a more pro-active management of safety. It’s not just the industry. In cases, the regulatory weaknesses that exist in individual States has needed to be given attention.

Add all this up over the last 20-years and you would expect everyone to be pro-actively managing aviation safety. Sadly, that’s not the case as some States and organisations are still managing the transition to a more pro-active approach. Some are so resource constrained that they are more inclined to talk about aviation safety than to act upon it.

Regulatory weaknesses exist in some unlikely places. Additionally, with the fashion of the time being to cut “red tape” at every opportunity, more troubles might be just over the horizon.

I’d like to see a break between the association of what is regulatory and what is considered bureaucracy. The two are not necessarily the same. Regulation and standards are synonymous. And what we know is that there is no successful complex industry without standards.

Please let’s not wait for the next accident report to tell us what to do.

Toronto Regional Jet

The bubbling cauldron of social media is overflowing with comments on the regional jet crash in Toronto. So, far 2025 is starting as 2005. After a period when aviation safety results were admirably good, we now enter a period when events conspire to show us that we should never take aviation safety for granted. Obviously, the question gets asked – is this a statistical blip or is something more concerning happening?

As would be expected the Canadian air accident investigators are gathering data. No doubt there will be preliminary reports. Much evidence is available to help the air accident investigators determine probable cause. This evidence available includes a plethora of video footage. The ubiquity of the mobile phone has led to a situation where videos circulate on social media before they get into the hands of professional investigators.

Speculation on this major accident ranges from the Trumpian – I saw a video therefore I know what happened to the more considered comments about how well the cabin crew did in evacuating the broken aircraft under horrendous conditions.

Certainly, the landing appears to have been a hard one. The weather condition, as seen on the pictures doing the rounds, was windy but not stormy in the sense of poor visibility. Snow cleared from the runway. Surrounded by a landscape of white.

Luckly the aircraft slid down the main runway. That dissipated energy to an extent that most passengers were not badly hurt and therefore able to escape the wreckage. Another fortuitous part of the sequence of events was the absence of a fire at the time of evacuation.

I need to be careful in using the word – fortuitous. The investigators will put together the exact sequence of events but there’s no doubt in my mind that credit should be given to the good design of the aircraft. Generally, accidents and serious incidents are more survivable that people might initially think. This is NOT simple luck. Although, for individuals’ luck may play a part in their fate.

Structures and Cabin safety experts spend their working lives thinking about the – what ifs. The objectives set for aircraft designs maximise the opportunities for survival. Cabin crew can fly for a lifetime and never experience a catastrophic event. When they do their training kicks in, and lives are saved. My thanks are to all those who work tirelessly behind the scenes to ensure that aviation safety isn’t taken for granted. Those who do the serious business.

POST: Agreed. https://edition.cnn.com/2025/02/20/us/flight-attendants-safety-plane-crash/index.html