František Truhlář – A story Worth Telling

A documentary about a very brave young man who fought for his country and was then rejected by the very same people he fought for. Video biography of F/Lt František Truhlář who was to suffer sever burns in two separate aircraft crashes during WW2. The first when he was an air-gunner with 311 Sqn when […]

via F/Lt František Truhlář suffered severe burns during WW2. — Aviation Trails

Bolkow Bo 105 – The Teutonic Twister

A Pioneer of Pedigree 

Red Bull’s Bo 105 performing at Pardubice, Czech Republic in 2016.

By the late 1960s, the helicopter had proven itself as a credible technology worthy of developing. The Korean War of the early 1950s and the Vietnam War that was raging at the time had proven beyond a doubt the helicopter’s value to military operations. In the same period of time, the civil sector was also warming up to the benefits of rotary flight.

The Bolkow Bo 105, which flew for the first time in 1967, was a major revolution in helicopter development that has had far reaching influence on helicopter design through the years. It is fitting that such a revolutionary machine should come from the company founded by the decorated and visionary Ludwig Bolkow.

Ludwig Bolkow (1912-2003) was born into aviation. His father was a forman in the Fokker aircraft company. Ludwig himself began his career in aviation working for the Heinkel aircraft company before studying aero-engineering in Berlin. Upon his graduation in 1939, he was hired by Messerschmitt and was heavily involved in development of the Bf-109 fighter and the Me-262 jet fighter.

He created his own company in 1948 and built it into one of the largest and most respected aviation companies in post WWII Germany. He is celebrated not only as a key architect in the reconstruction of the German aircraft industry, but also as a father figure to today’s Airbus Group; Bolkow’s company was one of the cornerstones that the Airbus Group was built upon.

Bolkow was not only visionary from an aviation point of view; he was a proponent of alternative fuels and spent much of his later life researching hydrogen and solar based energy sources. Additionally, he was also revolutionary as an employer through active mentoring of his employees, company pension schemes and flexible working hours. All of those things were quite radical ideas at the time he offered them to his workers.

Advancing the Blade 

Bo 105 of the German army at Ostrava, Czech Republic in 2015.

MBB, the company created by a merger of Bolkow with Messerschmitt in 1968 and a further merger with the aircraft division of Blohm + Voss in 1969, is credited with creating the Bo 105. However, the aircraft’s design was cemented and the first flight taken prior to the merger. The Bo 105 was concieved and born in the Bolkow stables.

The Bo 105 was the world’s first light helicopter to be powered by two turbine engines. This not only gave the aircraft impressive power and performance for the class, but also increased reliability and safety.

More significantly, through the Bo 105, Bolkow introduced the rigid rotor system to the aviation world. The rigid, or hingeless, rotor system was designed around a solid titanium main rotor head that was connected to rotor blades made of composite materials that were lighter, stronger and more flexible than metal ones of the day. The rigid rotor design did away with the hinges that connected the rotor blades to the rotor head in traditional fully articulated rotor systems and used the increased flexibility of the composite rotor blades to do the job the hinges normally would do.

Savings in weight, materials and maintenance were all benefits of the rigid rotor system. The greatest benefit of the new rotor system, however, was in giving the helicopter an unprecedented level of agility and maneuverability. It was through the higher flexibility and torsional strength of the composite rotors that the Bo 105 was given it’s legendary acrobatic abilities. The Bo 105 became famous for loops, rolls and other aerobatics that previously had not been in the abilities of helicopters.

As the Bo 105 was a fully new design, great care was taken in developing it. The fuselage, main rotor and twin engine arrangement were all tested separately before being brought together.

The first prototype, designed to test the fuselage, was fitted with American engines and a main rotor of a Westland Wasp helicopter from Great Britain. Meanwhile, the rigid rotor system was first tested on a French built Sud Aviation Alouette II.

A total of six prototype aircraft were built and the Bo 105 was put into production in 1970.

Building a Legend 

German army Bo 105 seen at Ostrava in 2014.

The Bo 105 saw three decades of production before the last one was built in 2001. Nearly 1500 of the type were built on assembly lines in Canada, Germany, Indonesia, the Philippines and Spain.

The Bo 105 was originally intended primarily for the civil sector. However, through it’s agility and high rate of climb, it did attract the attention of military buyers soon after it debuted. Covering a range of 25 different variants, the Bo 105 has found much popularity with civilian and military users alike in it’s life.

Perhaps the most recognisable role for the Bo 105 to the casual observer is that of air ambulance, a vocation it excelled at for many years worldwide until was succeded by newer designs.

In civilian circles, it also has found much use in police work, film and television as well as corporate transport to name a few.

In military use, the type has been employed successfully in both inland and off-shore applications that have included training, anti-tank work, infantry support, maritime reconnaissance and border patrol.

The biggest user of the Bo 105 was the German army, who retired the type in 2016. At the height of the Cold War, the former West Germany used a variant of the aircraft called the PAH-1 as an anti-tank platform. The machine’s speed and agility, particularly below treetop level, in addition to it’s small size made the Bo 105 well suited to that role.

Progeny of a Pioneer 

The Eurocopter EC-135 is one of the Bo 105’s direct descendants. This one was seen at Ostrava in 2013.

As one would expect of a successful design, the Bo 105 was developed and became the parent of a family of light utility helicopters that inherited the rigid rotor system and admirable handling qualities of their progenitor.

However, due to a number of mergers and rebrandings in the European aerospace industry over the years it is not always easy to identify by name which helicopters have the Bo 105 in their ancestry.

MBB existed as an independent company until it was purchased in 1989 by another Germany company, DASA. By 2000, after several name changes and reorganisations, DASA was merged with Aérospatiale-Matra of France and CASA of Spain to create EADS, European Aeronautics Defense and Space. EADS eventually restructured as the Eurocopter Group and became Airbus Helicopters in 2014.

While the Airbus Group currently claims the legacy of the Bo 105 and descendant designs, the family ties can be sorted with a bit of work. Here’s a general overview of the Bo 105’s progeny:

MBB/Kawasaki BK 117 / EurocopterEC 145 / UH-72 Lakota / Airbus H 145

The first major development of the Bo 105 was the BK 117, a joint project between MBB and Kawasaki of Japan. The two companies had been working independently on light utility helicopter designs before making a deal to create a single design together.

MBB took responsibility for the rotor, tail, flight controls and hydraulics while Kawasaki tended to the landing gear, fuselage and transmission among other things. The Prototype first flew in 1979 and production began in 1982. BK 117 production ceased in 2004.

During the time the BK 117 was in production, the European share of the project came under the jurisdiction of Eurocopter in 1992. This change did not affect partnership with Kawasaki. In 1999, after a number of  of upgrades to the BK 117 were made, the Eurocopter EC 145 was introduced. The EC 145 was the basis of the UH-72 Lakota, the winner of the US Army’s light utility helicopter contract in 2006 to replace outdated Bell UH-1 and OH-58 helicopters. Another military variant was known as the EC 645.

After rebranding as Airbus Helicopters in 2014, the EC 145  and  EC 645 were redesignated as the H 145 and H 145M respectively.

MBB Bo 108 / Eurocopter EC 135 / Airbus H 135 

EC 135s in ambulance configuration seen at Ostrava in 2013

MBB started working on a refined version of the Bo 105 called the Bo 108 during the 1970s, much of that work focussed on streamlining at aircraft’s fuselage and improving controls. Development of the Bo 108 was a protracted matter that saw Aérospatiale of France becoming involved. The first of two prototype Bo 108 aircraft flew for the first time in 1988.

Initially the Bo 108 was only intended as a technology demonstrator, but developments of the aircraft through the 1990s were encouraging enough that production certification was pursued. By that point, Eurocopter had been formed and the Bo 108 was redesignated as the EC 135. A military version was developed and designated the EC 635.

In 2014 Airbus renamed the EC 135 and EC 635 the H 135 and H 135M respectively.

The Bo 105 Today and Learning More 

This TV camera equiped Bo 105 was seen at Zeltweg, Austria in 2013.

The Bo 105 is far from retired and remains a very active flyer. As of 2014, approximately 700 of the type were known to still be flying in both military and civil forms.

With technical support networks for it still firmly in place and a demand for it’s qualities still present, the Bo 105 isn’t likely to be leaving the skies any time soon and your chances of seeing one are good depending on your location.

The following links will provide you with a good deal more information on the Bo 105, it’s history, development and those behind it’s success:

This article from 1967 will give you a good idea of how the aircraft was viewed while still a prototype:

This timeline on Airbus Helicopters’ website will show you where the Bo 105 fits in their history:

This article covers German army flight training with the Bo 105 in:

This article gives a good description of the difference between rigid and fully articulated rotor systems:

This obituary will tell you a good deal about Ludwig Bolkow:

Roaring into the New Year!


Some Cleaning up and Streamlining

Over the 2016 Christmas and New Year break, I set myself some goals for refining both my blogs. While I did not get everything I wanted accomplished, I did get some things done.

Here’s a brief rundown of what was done over the break at Pickled Wings:

All dead links were found and removed or replaced.

Several articles were earmarked for text revisions and expansions while some of the lesser viewed ones were removed entirely.

Several photos in various articles were earmarked for recropping, refreshment or replacement.

The “Blog Info” section in the main menu was given a complete restructuring. Two or three smaller sections were condensed into a single “About Pickled Wings” article.

In the Czech Republic section of the “Museums and Organisations” area in the sidebar menu, I’ve Revised the old entry about the Olomouc Air Museum to acurately reflect it’s current location at Koněšín. I will endeavour to visit this museum in 2017 to properly report on it’s current status.

As always, I will announce major revisions to articles when they occur.

At that, fasten your seatbelts and move your seats into the upright position. Let’s see what 2017 brings us!

Catching up on Book Reviews

I haven’t put up any new book reviews lately, so it’s time to correct that. Here’s an overview of a few books I’ve read in the not so distant past:

“Ten Years Flying the F-105”
By: Randolph S. Reynolds
Independently published (2015)

This is a very readable and accessible book written by a retired F-105 Thunderchief pilot. It’s written in a straightforward and informative way that is free of bravado and has a minimum of unexplained jargon.

While the majority of books on the F-105 Thunderchief focus on the type’s use over Vietnam, the author himself flew them in that conflict, this book is a refreshing departure from that pattern as Reynolds has opted to put the focus of this work on his post Vietnam flying career in the U.S. Air Force Reserve Command (AFRES) and the twilight years of the F-105’s service career. As such, the reader is given an insight into life and operations in a lesser covered branch of the U.S. Air Force and what F-105 operations were like on a daily basis outside of combat.

I can easily recommend this book to anyone with a general interest in the F-105 and what it was like to work around. The straightforward, no-nonsense style of writing is informative and not at all esoteric or alienating in feel.

If you’re looking for thrills and edge-of-your-seat reading, this isn’t your book. If you want to know what living and working around the mighty F-105 Thunderchief in peacetime was like, you should enjoy it.


“Out of the Blue”
Edited by: Ian Cowie, Dim Jones and Chris Long
Halldale Media Group (2011)

This is the first of a two book set of flying stories and memoirs of Royal Air Force members from their service careers. The compilation covers a wide time period from just after the Second World War to the end of the Cold War.

This is a very well edited compilation of stories that keeps the focus on living and working around the various aircraft. All the tales take place in the squad rooms, hangars,flightlines or cockpits. There are, thankfully, no stories of off duty alcohol induced misadventures or skirt chasing to be found in this book.

These are all proper flying stories in the truest sense. The historical width and breadth this book covers ensures that the reader gets a good taste of how life in the RAF changed over the years and how the demands on pilots increased as the technology in aircraft increased as well.

As you might be able to tell, I very much recommend this book!

The book was published with the intent that the proceeds from sales would go to benefit the RAF Benevolent Fund and other British military veteran charities.

You can find it for purchase on the RAF Benevolent Fund website:
Out Of The Blue


“Out of the Blue Too”
Edited by: Ian Cowie, Dim Jones and Chris Long
Halldale Media Group (2014)

This is the follow up volume to “Out of the Blue”. As with the first book, it covers the post World War Two and Cold War years of the RAF quite well and gives a decent cross section of the different aircraft types and changes in life in the RAF through that period.

However, this book lacks a certain focus that the first one had. While the first one had solidly aircraft and active duty stories at the heart of it, several of the stories in this second volume seem only tenuously connected with either. Additionally, some of the stories in the second book go on a bit longer than necessary and could have benefited from a bit tighter editing.

Despite the shortcomings, I still recommend this one. As with the first volume, it was published with the intent that the proceeds from sales go to the RAF Benevolent Fund and other British military veteran charities.

It can be purchased through the RAF Benevolent Fund website:
Out of the Blue Too


“The Red Knight of Germany: The Story of Baron von Ricthofen”
By: Floyd Gibbons
Garden City Publishing (1927)

While certainly not a new book, this one will give you an insight into Manfred von Ricthofen that very few other books on the man could. It’s precisely because it was written and published less than a decade after the First World War ended that it can give such insights.

The author, Floyd Gibbons (1887-1939), worked as a war correspondent for the Chicago Tribune. Gibbons was known for a dramatic and detailed writing style, and it shows in this book. Having witnessed the conflict first hand and lived in a time when access to veterans of the conflict with still fresh memories could be found, Gibbons could write this book with an immediacy that later books on the subject lack.

Additionally, Gibbons had access to Ricthofen’s mother and the museum she had constructed in the family home in memory of her son after the conflict. The Ricthofen family home in Poland still stands today, but the museum was dismantled just prior to the Second World War and many parts of it’s collection went to other museums around the world or are still unaccounted for.

The book contains recollections of men who fought the Red Baron and lived to tell their tales as well as those of men who served alongside the man and remember him as a commander or squadron mate. Excerpts of his own letters home to his mother are also frequent in the book.

The book does get a little dry in places, but overall it gives anyone with an interest in the man or First World War air combat a rather unique perspective on both.

Breguet Br.1150 Atlantic – Seagoing Specialist

Purebred Patroller 

German navy Atlantic ATL.1 preserved at Berlin-Gatow, Germany in 2016.

Towards the latter half of the 1950s, NATO identifed a need for a new long range maritime patrol aircraft (MPA) to counter new seaborne threats that the Cold War was bringing with it into western European waters.

NATO produced a specification for such an aircraft in 1958 and out of 21 designs presented to fulfil it, the Breguet Br.1150 Atlantic from France was unanimously selected the winner.

While French in origin, the  Br.1150 would form the heart of  a multi-national consortium known as SECBAT (Société d’Étude et de Construction de Breguet Atlantic) that when established in 1961 was initially made up of companies from Belgium, France, Netherlands and West Germany. Two companies from Italy would join the group in the late 1960s.

In the history of MPA development, the Atlantic holds the distinction of being the first such aircraft in the world designed for the purpose from the ground up. The aircraft was not of bomber or airliner ancestry as most aircraft in the MPA category tend to be.

The Atlantic was also significant in being the first mutinational aircraft project of it’s category and scale within NATO. As such, it carried with it the importance of showing that nations that had been combatants less than two decades prior had made peace and could cooperate.

Into Uniform and Further Development 

German navy ATL.1 preserved at Berlin-Gatow.

The prototype Atlantic took to the air for the first time in October of 1961 with delivery of the first production standard machines, designated ATL.1, to French and West German navies commencing in 1965 and continuing until 1968.

At the outset of the program, only France and Germany had been interested in acquiring an actual aircraft for service; Belgian and Dutch interests centred on bringing work to their respective domestic aviation industries.

The Netherlands only showed interest in purchasing a fleet of Atlantics in 1968, just as the production line was about to be closed; Interest in the aircraft as an MPA for the Italian military was shown in the same time period. The combined interests of the two nations plus the desire of two Italian companies to join the SECBAT consortium was enough to keep the production line open until 1974 to produce a second batch of aircraft to the ATL.1 standard.

While the ATL.1 was designed with the intent to be used widely among NATO nations, only four member states ultimately used it. Outside of NATO, the only Atlantic user was Pakistan.

The Dutch used a fleet of nine Atlantics from 1969 to 1984 and eventually sold six of the aircraft back to France in that period. Subsequently, France refurbished three of the former Dutch aircraft and sold them on to Pakistan in 1976. The choice to retire the Dutch Atlantics and replace them with the Lockheed P-3 Orion stemmed from a series of three crashes in the late 1970s and early 1980s that were attributable to elevator control linkage problems and ongoing corrosion issues.

In the late 1970s, France proposed and updated variation of the Atlantic. The new aircraft, eventually designated ATL.2, took the basic ATL.1 design and added a revised tail fin and a completely updated sensor and avionics suite.

The ATL.2 first flew in 1981 and production started in 1984. The first ATL.2 was delivered to the French navy in 1989 and a total of 28 were built. Germany gave some consideration to purchasing the ATL.2 in the early 1990s, but ultimately opted to purchase used Dutch P-3 Orions in 2004 instead. As such, the ATL.2 is used exclusively by France though some technology from it was used to upgrade the Italian ATL.1 fleet.

In the 1990s a third generation of the Atlantic, the ATL.3, was proposed. It included a modern flight deck, new engines and new propellors among other upgrades. The ATL.3 failed to generate much interest and it was cancelled by 2005.

The Atlantic in Action 

German navy ATL.1 preserved at Berlin-Gatow.

While a maritime patrol and anti-shipping platform by design, the Atlantic has taken turns as a transport, bomber, electronic intelligence platform and airborne command post in it’s lifetime.

During the early stages of Opération Épervier, an operation which lasted from 1986 to 2014 and was initially put into action by France to counter Lybian military incursions in to Chad, a French navy Atlantic fitted for intelligence gathering was used as an airborne command post. In that capacity, the aircraft was able to intercept and rapidly decode Libyan military signals and accurately guide actions against them.

Through the 1990s, German navy Atlantics fitted for intelligence gathering were used to monitor communications and enforce the United Nations embargo against Yugoslavia.

During the closing stages of the Kosovo War, which lasted from February of 1998 to June of 1999, Atlantics of both the French and German navies were used for surveillance flights over the area of battle.

A smaller battle in 1999 was the Kargil War between India and Pakistan that lasted from May to July of that year. Approximately a month after the war had ended, a Pakistani navy Atlantic strayed into Indian airspace and was subsequently intercepted and shot down by a pair of Indian MiG-21 fighters.

The crash of Air France Flight 447 in June of 2009 brought the Atlantic’s MPA role to the fore when France dispatched several of the aircraft to fly from Dakar, Senegal to aid in the search for the wreckage of the Airbus A330 involved.

Since early 2013, French navy ATL.2 aircraft have been involved in the international effort to fight Islamic militant groups in both Africa and the Middle East.

Opération Serval, which lasted from December 2012 to July 2014, was initiated to stop Islamic militants in Mali from taking the capital of the country and overthrowing the government. The Atlantic’s roles in that operation included intelligence gathering, surveillance and dropping laser guided bombs.

At the time of writing this Blog piece, French Atlantics are part of Opération Chammal. This operation, which was initiated in September of 2014, is the French contribution to the ongoing international effort to fight Islamic State (IS) actions in Iraq and Syria. As the operation has progressed, the Atlantics have been primarily tasked with air strike and long range reconnaissance duties.

The Atlantic Today and Learning More

In French naval service, the ATL.2 is projected to serve into the 2030s. However, the ATL.1 is largely a museum piece as of 2016.

Although Italy is the only user of the ATL.1 which continues to fly the type, they are in the process of replacing it with an MPA version of the French-Italian developed ATR-72 commuter airliner.

Germany retired the last of their Atlantics in 2010 and Pakistan followed suit in 2012. Both nations replaced their Atlantics with the Lockheed P-3 Orion.

The following link will take you to the Dassault Aviation website and information on the origins of the Atlantic. Dassault acquired the Atlantic through a merger with Breguet in the 1970s:

This link will take you to a brief, but interesting summary of the Atlantic’s service in the Dutch navy:

While somewhat dated, this document gives a good overview of the entire Atlantic program including technical differences between the variants: