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From Villain to Unsung Hero

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One winter morning in 1998, as a part of the SIA crew while planning a departure from Kimpo (Gimpo) International Airport Seoul South Korea, in our Airbus A 340 aircraft, we realised that it had snowed all night and the runway surface was ‘contaminated’ with melting snow (Slush). We had been told time and time again by the performance experts that a depth of snow, slush or standing water more than 3mm (1/8th of an inch), the proverbial SriLankan Baas’s ‘Noola’, on more than 25% of the Runway, it is considered to be contaminated. The Kimpo Airport Authorities hadn’t cleaned the runway surface like in most other airports.

A contaminated runway poses a whole host of problems for pilots attempting to take-off. Because of the natural resistance of the water, snow or both on the runway in varying degrees and depths, the acceleration to the take-off speed becomes slow as the wheels have to displace the contaminants using up a greater amount of runway length than on an uncontaminated (dry) runway. This leaves less runway length available for the aircraft to stop, if for some unforeseen reason the pilots need to abandon the take-off. Then stopping becomes a problem as the tyres may skid or aquaplane, making the wheel brakes ineffective with a good chance of over running the runway length available.

In this day and age, to reduce the thermal and mechanical stresses to the jet aircraft engines it was recommended by the manufacturer that pilots use a reduced thrust setting on uncontaminated (dry) runways, for take-off.  Therefore, it was mandated that on a contaminated runway, full thrust is used to enable the aircraft to accelerate quicker to the speed (V1) at which the Captain will have to decide whether he will stop or go. Every type of aircraft is tested in snow, slush or standing water, the spray patterns studied and a set of lower V1 speeds for slush operations are available for different take-off weights in graphs or in tabulated form for quick reference.  At V1 speed, if the Captain decides to continue the take-off it becomes a ‘non-event’. However, if he decides to stop for any reason, it becomes regimented and exiting as he has got to announce to the First Officer that he is discontinuing the take-off, apply brakes, close the engine Throttles, keep the aircraft straight on the centre line (that may not be visible), deploy spoilers and Reverse Thrust bringing the aircraft to a stop and cancelling Reverse and spoilers at the appropriate time. The non-flying pilot notes the air speed at which the Captain rejected and announces to the Control Tower that they have abandoned the take-off and then monitors the deceleration, providing a back up to the Captain’s actions. These are standard Operating Procedures (SOP’S) evolve through the years. Noting the speed at which they rejected the take-off is necessary when it comes to brake cooling time after rejecting a take-off. The brakes in the old days became white hot with its use at high speed. With the use of Carbon brakes and integral cooling fans the problem is resolved to a large extent. 

In the present day in all the modern airliners braking is done automatically using ‘Auto Brakes’ with anti- skid devices operating and this exercise (Rejected Take off) is practiced in the Simulator every six months as a team exercise under the supervision of a Flight Instructor. As a further consideration, the manufacturer Boeing’s analysis of all the past rejected take-off accidents have also shown that if the Captain was two seconds too slow in rejecting the take-off at the decision speed of V1, the aircraft will exit the runway at the other end at 60kt! So, their recommendation was to be ‘go minded’ at V1 and not attempt to stop. The reader will agree that a lot of things happening and judgemental considerations going through the Captain’s mind simultaneously while on the take-off run.(what if)

Usually on take-off on an uncontaminated runway it was a legal requirement to be at a height of 35 feet over the end of the runway. On a contaminated runway the aircraft is allowed to clear the end at 15 feet to accommodate the loss of performance. In addition to all this, in jet aircraft, it is recommended to have the continuous ignition ‘on’ to ensure that the engines do not flameout (fail) due to slush ingestion by the engine intakes. Fortunately, it wasn’t snowing that day in Kimpo and therefore did not pose a problem with ice on the wings which would have created another problem for us as the wings are meant to be clean on take-off. These Standard Operating Procedures (SOPs) are all contained in the Flight Manual of any particular type of aircraft and expected to be read and understood by its Crew.

That morning the take-off at Kimpo went off like clockwork. As everything appeared to be normal there was no need to abandon the take-off and after getting airborne, we had to concentrate on other important things like a sharp turn left before reaching the DMZ (De Militarised Zone) and avoiding overflying the South Korean President’s Palace which was a known prohibited area. They would fire two tracer shells. If no action was taken to change course and avoid, they will attempt to shoot you out of the skies, passengers or no passengers!

All in all, tackling a contaminated runway in modern times became a ‘piece of cake’ if one knew what to do. These procedures were not promulgated overnight. They were the result of ‘blood sweat and tears’ through the years. The story below is a good example.

In 1949 there was an accidental overrun of the runway of a Trans Canada Airlines (TCA) aircraft in Vancouver, Canada. The Investigators declared that the probable cause was the presence of slush (melting snow) on the runway preventing acceleration to the required speed for take-off. This observation was intimated to many airlines including British European Airlines (BEA) authorities who had not taken any cognizance and duly filed the letter without advising their operating crews of such possibilities.

Nine years later, on 6th Feb 1958, Capt James Thain and Capt Kenneth Rayment were operating a BEA charter flight from Belgrade Yugoslavia to London with the Manchester United Football Team and some well-known sports writers as their passengers. Both pilots were good friends and had served in the RAF together during WWII. Usually there would have been a regular First officer but since both captains had common interests like poultry farming, they had requested to operate together. The young Manchester United team known as ‘Busby Babes’ were well on their way to be European Cup Champions. Since the Airspeed Ambassador ‘Elizabethan’ aircraft did not have sufficient range to fly direct to London, they needed to do a Technical (refuelling) stop in Munich, Germany. The flight was uneventful till they reached Munich.

The Runway was contaminated with melting snow in Munich. Light snow was falling on the wings. Due to the fact that anti-ice heaters were used on the descent into Munich Airport, Capt. Thain decided not to get the wings cleaned. It was a judgment call.

After refuelling the crew attempted to take-off twice, but had to discontinue due to an engine malfunction. Then they taxied back to the ramp for a consultation with the Ground Engineer, after which the two captains decided to open power slowly to fix the engine problem which was known to occur in Munich which was over 1700 feet above mean sea level. On the third attempt the power was opened slowly and that involved a longer take off run which took the aircraft to a more contaminated unused part of the runway which actually made the aircraft lose speed from 117 knots to 105 knots and never accelerated to flying speed. Capt Thain was looking inside the cockpit and carefully ‘nursing’ the engines and monitoring the speed while Captain Rayment was handling the controls. When he looked outside the runway end was closing in quickly and it was too late. He opened throttles to the maximum. The wheels never left the ground because it didn’t have flying speed. The aircraft over ran and crashed through a fence, hit a tree and a house and burst into flames. The crash killed 23 out of the 44 passengers and crew on board, critically injuring Capt Kenneth Rayment, He passed away a few days later, leaving Capt Thain to carry the blame alone. With that, destroying the chances of Manchester United being European champions.

The German Accident investigator Capt. Hans J Reichel and his team arrived from Brunswick, West Germany, ill-equipped, about six hours later. By this time the weather had worsened and it was night time. He had to borrow lighting equipment from the BBC photo crew present at the site, He had been a pilot both in the Luftwaffe and Lufthansa the German Airline. The first thing he did was to check for wing ice and found a six-hour build-up of snow and declared that there was ice on the wings before take-off. No proper measurements of the depth of the slush were done on the runway at Munich. A parallel UK investigation was also launched. The formal accident inquiry commenced on 29th Apri’58 and was protracted and didn’t consider the effect of slush at all. The ‘Brits’ virtually fell in line with their German counterparts. The Final Accident Report came out on 9th March 1959, (More than a year after the crash), blaming the ice build-up on the wings and Capt Thain’s failure to de-ice.

It saidL:

“Apart from the ice, we couldn’t find any other reason which could have contributed to the air crash “

Capt Thain’s licence was suspended and he reverted to full time poultry farming while relentlessly working with the British Air Line Pilots Association (BALPA) to obtain more research data on the effects of slush on Take-off performance.

In 1961 Capt. Thain was fired from his job of BEA for allowing Capt Rayment to sit in the Left hand seat while he as designated Captain on the roster sat on the Right hand seat. The Captain on the roster should have sat on the Left hand seat and thus it was purported that he had violated the existing BEA Flight Crew Standing Orders which in itself a relatively minor matter. Looking back, it probably was just an excuse to shed him as this WWII veteran and BEA Captain ended up being an embarrassment to the Airline. There was no doubt about his ‘unquestionable ability’ up to that time of the accident.  In the eyes of the general public and Football fans he was considered a villain.

If the German Accident Investigators blamed the Slush on the Runway for the overrun then the Munich Airport Authorities would have to take the rap for not cleaning the runway surface. It was rather obvious that like in most accidents it is convenient and emotionally satisfying to blame an individual and not the system that gave rise to the unsafe situation. Capt. Thain did not give up trying to clear his name. He was determined to find out the real cause of the accident. He appealed.

Seven months after the crash in September 1958 the FAA started conducting practical tests on the impact of slush on aircraft acceleration for take-off. Although there was new scientific evidence available, the Germans were not keen on reopening the case and Capt. Thain was languishing in guilt. Capt. Thain kept the pressure on. Eventually in 1967 Prime Minister Harold Wilson mentioned publicly, that Capt. Thain was a “victim of injustices.” Soon after (1968) the British were also conducting experiments with slush on the runway at Royal Aircraft Establishment (RAE) in Bedford in shallow ponds of standing water, using Canberra, Viscount and Ambassador Aircraft. The significant adverse effects of slush on the Runway were confirmed.

Finally, Capt. Thain’s persistence paid off and his plight was mentioned in Parliament and the British Authorities agreed to review the investigation and found that the German investigation was incomplete. The Investigators had not interviewed many witnesses including the Air Traffic Controllers and those who reached the wreck first and could have given evidence to say that there was no ice on the wings immediately before the crash. It seemed that witnesses had been selectively interviewed to fit the ‘probable cause’.

Eleven long years after the crash in March 1969 Capt. James Thain was finally exonerated, but died soon afterwards of a heart attack at a relatively young age of 54, due to trauma and stress. This prompted one of the ‘wags’ in the BALPA to declare that “If the crash doesn’t kill you, the inquiry will” 

Capt. James Thain with his determination to find the real culprit of the Munich accident made taking off in slush safer for airline pilots, by triggering off research on both sides of the Atlantic that evolved into SOP’s which allowed us to take off safely from Kimpo that wintry morning.

In his own words, to his daughter, “The difference between the possible and impossible is merely a measure of man’s determination”

To me, Capt. James Thain was an unsung hero whose great determination to prove his innocence made flying safer for the future air travellers.

 



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‘Lord Edgware Dies’

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It has been some time since I read an Agatha Christie, the plot of which I cannot remember. So, I was delighted to find on the shelves of a friend Lord Edgware Dies, which I had a vague memory of, but no certainty about who had done it.

When I read it, I found that my memory of who was probably the killer was correct, but I could not be certain and the red herrings Christie threw in were so diverting that until almost the very end I wondered if I had been wrong.

The plot is very simple. Jane Wilkinson, who is married to Lord Edgware, tells him that she is desperate for a divorce since she is in love with a very proper Anglo-Catholic peer, Lord Melton, but Edgware refuses to divorce her. She asks Poirot to talk to him, which he does, and is surprised to find that Edgware has told Jane he is prepared to give her a divorce. This was, after he had categorically refused, through a letter, which Jane said she had not received.

That night Edgware is murdered, after Jane had been to see him, or so the butler said, and also Edgware’s secretary. But Jane had been that evening at a grand dinner many miles away, where a dozen fellow guests could swear to her presence.

There was a solution however to the mystery of two Jane Wilkinsons, namely a skilful impersonator called Carlotta Adams who, in the opening chapter had impersonated Jane Wilkinson, who had also been at the performance. But when Poirot goes to see her, he finds that she had been found dead on the morning after Edgware had been killed, of an overdose. And in her bag was a gold case, with a strange inscription, that contained the drug, along with a pair of pince-nez.

Her maid said she had written a letter to her sister in America and posted it the previous night. Poirot asks Inspector Japp to get the letter, and a transcript is received from America, and in it the name of Edgware’s nephew Ronald Marsh is mentioned; he had taken Carlotta to dinner after her performance, with which the book opens, and had then set her a challenge. Japp arrests Marsh, but Poirot is not happy and asks for the original of the letter, which the sister sends him. That shows that a page is missing, and the tear is obvious, though that raises the question as to why it had not simply been cut.

Matters are further complicated by the fact that Marsh had gone in a taxi to the Edgware house, along with Edgware’s daughter Geraldine, in the interval of an opera which had previously seemed to provide them with cast iron alibis. Geraldine had gone in to fetch her pearls so that Marsh could raise money he needed, and thus had an opportunity to kill Edgware, as did Marsh, for the driver said he had got out of the taxi while waiting and gone into the house.

Agatha Christie

Marsh explained why he had gone to the house on the night of the murder as having followed Bryan Martin, an American actor, who had been in love with Jane, whom he saw go into the house with a key. But there was no one visible when he entered, and Geraldine almost immediately came down and they left together. And Martin too has become an object of suspicion to Poirot, for he had been to see him before the murders were discovered with a story of being followed by a man with a gold tooth – a story Poirot immediately realized was false when he was asked how old the man was, and was told he was young, for young people did not have gold teeth.

A heap of French money Edgware had got for a trip to Paris was missing, but since Marsh had no need for it after his cousin’s offer of help, Poirot deduces that it must have been taken by the butler, who has disappeared. Christie has stressed that he is astonishingly handsome, unusual in a butler, and Poirot notes a resemblance to Martin, so he thinks the mysterious man going into the house must have been him.

Incidentally, later Poirot assumes that Edgware’s change of mind was because he was involved in some scandal, and I believe Christie intends us to see the cause of this in his handsome butler, though this is not specified.

Meanwhile, Poirot has asked Japp to find out the provenance of the case found in Carlotta’s handbag, and it turns out to have been made in Paris, specially commissioned, and collected by a woman with pince-nez.

But then another murder occurs—that of another guest at the grand dinner, which provided Jane with her alibi. The victim is an actor who had been bemused when Jane, at a lunch, thought the Judgment of Paris referred to the city. He told Hastings he wanted to see Poirot, but was killed before he could get to the appointment. Poirot had rushed there when told about his request, but it was too late.

Meanwhile, Poirot has tried out the pince-nez on Edgware’s secretary, but she could not see through these. It was only a chance remark heard outside the theatre that led him to try them out on Wilkinson’s maid Ellis, a spare pair that had been appropriated for the night of the murders.

Poirot then lays things out, having summoned Martin and told him that he probably suppressed Edgware’s letter, as he had been dropped by then and he did not want Jane to marry another. But after teasing Martin, Poirot says that Jane was in fact the murderer, and she got Carlotta to impersonate her at the dinner while she went to the house and killed her husband. After meeting Carlotta later and checking with her through a call that she had not been rumbled, Jane had gone ahead with the murder – she put veronal into her drink and the case with veronal into the handbag. She forgot to take out the pince-nez she had used earlier to imitate an American. Carlotta had registered as the American in a hotel and Jane had gone to see her, and there they exchanged identities. After seen the letter, she made use of it by tearing off the page that referred to her, and the S of She, so that the person who had challenged Carlotta to impersonate her seemed to be a man.

There is a coda in which Jane, condemned to death, writes to Hastings, still full of pride at her ingenuity hoping she will be remembered.

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Desilt reservoirs, learn from our ancient irrigation systems

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Polgolla

by Prof. O. A. Ileperuma

Silting of reservoirs is a major problem today affecting our hydropower production and irrigation systems. The main Mahaweli reservoirs are silted to a considerable extent reducing the water holding capacity of them. Due to poor soil management practices, floodwaters deposit large amounts of silt in these reservoirs. When the Polgolla reservoir was fully drained about two years back, one could see mountains of silt in the lower reaches of the reservoir. A rough estimate is that 50% of the total capacity of these reservoirs has been lost to siltation. This is a serious issue which affects not only power and agriculture but also flood control.

Our ancient irrigation systems ensured that desilting of reservoirs took place under royal decree where all users of the reservoirs were ordered to carry out desilting of reservoirs during the dry season. The clay thus collected was used in making bricks for the construction of great stupas which dot the landscape of our ancient kingdoms. This ensured that the reservoirs had their full capacity filled with water for the next cultivating season. Our ancient kings were clever enough not to construct reservoirs by blocking main rivers such as the Mahaweli. A classic example is the Minipe left canal where they tapped only the surface water of Mahaweli. Even the bigger tanks such as Nuwara Wewa and Parakrama Samudraya were fed with minor rivulets. There were also other ingenious features in the cascade irrigation systems built by the ancient kings, such as mud sluice canals and forest reservations between the reservoirs in the cascade system. These reservations helped trap silt and remove excess nutrients, which could otherwise contribute to increasing salinity as water flowed from one reservoir to another.

Victoria

Moragahakanda

A classic engineering marvel is the former Yoda Ela, which carries water from Kalawewa to Nuwara Wewa and Tissa Wewa. It is 87 km long although the straight distance between these points is only about 40 km. The gradient of this canal is about 10 cm per km or 6 inches per mile. Yodha Ela functions as a moving reservoir and feeds about 4,600 hectares of paddy lands. It is a winding canal with about 120 smaller reservoirs on its way. It was constructed during the reign of King Dhatusena around 459 AD and later expanded by King Parakramabahu by connecting more reservoirs to the network. Unfortunately, during the Mahaweli project our modern-day engineers constructed a concrete canal replacing the winding path of this Yoda Ela also called Jaya Ganga. This effectively removed the ability of the old Yoda Ela to remove silt and nutrients. The bank of this Ela has wet zone trees such as jak and areca nut growing well. They take up the nutrients from the flowing stream making the water suitable for irrigation later.

Ancient Mesopotamian civilisations depended on dams constructed along the two main rivers, Euphrates and Tigris. After continuous irrigation of their fields over several thousand years, salinity of the irrigated lands increased making them unsuitable for agriculture. People died due to famine and this clearly illustrates the danger of blocking main rivers for agriculture. There is scientific evidence that the salinity of paddy soils in the Mahaweli C area is increasing.

We saw the devastation caused by Cyclone Ditwah. The sluice gates of the Kotmale Reservoir were opened, and Kandy and Peradeniya were flooded. If the reservoir had had greater storage capacity, couldn’t the opening of the gates have been delayed? This may not be an argument that modern-day engineers would readily accept, and I am not an irrigation expert. These ideas may well be naïve. But most of us tend to think of reservoirs mainly in terms of hydropower generation and irrigation, while their role in flood control receives much less attention. The question therefore deserves serious consideration. Could restoring lost reservoir capacity through desilting help improve our ability to manage extreme rainfall and reduce flood risks?

Desilting our reservoirs should be considered a national priority.

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Losing out to Ethiopia

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From Trailblazer to Tailender

Export diversification – Missing the wood for the trees – Part III

by Gomi Senadhira

In Sri Lanka, the word “Ethiopia” is often used as disparaging slang to describe individuals or areas experiencing extreme poverty, starvation, or severe economic hardship. This linguistic habit originated in the 1980s with the Western media coverage of the devastating Ethiopian famine of 1983-85. That media coverage shocked the world but also left an outdated and offensive global stereotype that the country is permanently starving. Much has changed since then. By now, with an annual growth rate of around 9%, it is the fastest-growing economy in sub-Saharan Africa. Ethiopia has also emerged as a highly competitive exporter and is challenging not only its competitors in the region but also countries like Sri Lanka. This article is on how Sri Lanka has lost ground to Ethiopia (and a few other countries) in the GCC markets for agricultural and floricultural products.

Sri Lanka – A Pioneer in the Agriculture and Floricultural Market in the GCC

As discussed in Part II of this article, by the mid-1980s Sri Lanka had established a strong foothold in the GCC’s fruit, vegetable, and floricultural market. Geographical proximity and well-established shipping and air links gave Sri Lanka a strong comparative advantage over Southeast Asian and African nations. Thailand, Vietnam, and Kenya were not even in the market. At that time, Ethiopia was experiencing (as BBC news reports described) “a biblical famine”.

The market was not very large, but it was lucrative and growing. Trade Minister Lalith Athulathmudali as well as the Chairman of the Export Development Board, Victor Santiapillai, who visited Kuwait (and the GCC countries), recognised the market potential for these products and encouraged us to continue with our work. The minister was particularly keen to further develop links between the market for these products, exporters, and his Export Production Villages (EPVs). So, it was becoming a successful case not only for export diversification but also for transferring gains from exports directly to rural households.

From Trailblazer to Tailender

As a result, even by the beginning of this century Sri Lanka had a larger market share than most of its competitors from Asia or Africa. But since then, our competitiveness has weakened significantly. The tables below provide a comparative snapshot of Sri Lanka’s performance vis-à-vis Thailand, Vietnam, Kenya and Ethiopia in the GCC market for vegetables, fruits and floricultural products. As illustrated therein, in 2001 Sri Lanka was ahead of Thailand, Kenya and Ethiopia in this small but rapidly growing market. Since then, we have fallen behind Thailand, Kenya and many other countries in that lucrative market. If this trend continues, Sri Lanka will fall behind Ethiopia within the next few years. (See Table 1)

In the GCC market for vegetables (covered in HS chapter 07), Sri Lanka was ahead of most other competitors in 2001. As illustrated in Table 1 , Sri Lanka had failed to develop this market, while Thailand, Kenya, and even Ethiopia had very efficiently increased their market shares. The GCC is a market to which Sri Lanka can supply some vegetables, like cabbages, by sea. It appears Sri Lanka had also failed to exploit this mode of supply.

We can see a similar trend in the market for fruits. Vietnam, Kenya, and Thailand have emerged as major players, while exports from Sri Lanka have staggered on slowly. In this segment, Vietnam has emerged as a leading player during the last twenty years and the GCC imports from Viet Nam have shot up from US$44 thousand in 2001 to US$346 million by 2024. In part one of these articles, I discussed the remarkable increase of jackfruit exports from Vietnam “…just $3 million in 2015 to an impressive $236.8 million in 2023” while most of our jackfruit production rots under the trees. This explains how countries develop their markets, geographically and product-wise. (See Table 2)

Sri Lanka’s performance has been weakest in the market for floricultural products (HS Chapter 06), which groups live trees, cut flowers, and ornamental foliage. When we first entered the market in the 1980s, the market was dominated by the Netherlands, and Kenya and Ethiopia were not even in the market. At that time, we identified the Gulf states as a market where Sri Lanka could have a dominant presence due to geographical proximity. Even in 2001, Sri Lanka was ahead of Kenya, Ethiopia, and Thailand. But by now, Kenya has emerged as the dominant supplier. Ethiopia is also expanding its market share and is the third-largest exporter. (See Table 3)

Missing the Wood for the Trees

In the mid-1980s, Sri Lanka first established its foothold in the GCC market. Since then, Thailand, Vietnam, Kenya, and even Ethiopia have moved well ahead of us and have become leading players. Why did we lag behind in our export diversification efforts in general and, more particularly, in the GCC market?

The reasons are very clear. After the initial attempts in the 1980s and early 1990s, Sri Lanka has not been proactively involved in identifying, developing, and promoting new products and markets, or protecting and further developing new markets already established. The focus has simply been on traditional exports: tea, coconut, cinnamon, and garments, while other products were almost ignored. In essence, we have been and continue to focus intensely on a narrow group of products and markets, and we have lost sight of the bigger picture.

(The writer can be reached at senadhiragomi@gmail.com)

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