Welcome on board


100% commitment to your dream of flying

Kaelin Aero is your unique partner in airframe construction for civil and military aircraft. We combine extensive experience with the greatest commitment and passion – in short: we experience a fascination with flying each day anew.

Our quality demands are high, our range of services is broad: the production of aircraft components inspires us just as much as the execution of maintenance work. We travel globally to perform repair work and get your plane back in shape – even in the most remote areas.

The reconstruction of old aircraft and the construction of new historic aircraft are among our specialties – just like the upgrading of aircraft, to which we dedicate ourselves with the greatest passion. From transport planes to fighter and business jets – they are all looked after with the same care and craftsmanship.

We love these different challenges, because everyone has the same goal: to make our customers' planes airworthy again.



Did you know? Almost 200 meters of aluminum pipe,
for example, are installed in a Junkers F 13. Impressive...

The Kaelin Story

Milestones of a dream take-off

Dominik Kälin was enthusiastic about planes even as a young boy. What began as child's play has evolved into an impressive corporate history... 




Dominik Kälin has always been exceptionally passionate about flying. He began rebuilding planes at the age of 11. Even back then with a built-in motor of course. 


After school he began his training in aircraft construction at Pilatus. 


After his training, Dominik Kälin gained extensive experience in repairing and building aircraft, both at home and abroad. 


Founding of Kaelin Aircraftstructure GmbH (Switzerland). Its first order was a special commission with extremely tight timing: a wing repair on the legendary Super Constellation. Dominik Kälin and his employee successfully solved the task in three days and nights. 


Founding of Kaelin Aero Technologies GmbH (Germany). Construction of hall 1 to produce components for the Pilatus Porter PC-6. 


Start of rebuilding of the Junkers F 13 with serial number 01 (Anneliese 2). 


Replacement of special segments (UCL – upper cockpit longerons) in the entire Swiss Air Force fleet. This involved four Kaelin specialists supporting RUAG AG in Emmen, Switzerland, for three years. 


Construction of hall 2. Start of production in component manufacturing for the Pilatus PC-24. Seven components are now manufactured here. 

From 2017

Start of installation of MPVKs (maximum pilot view kits) from Swiss Rotor Services in helicopters for various operators. The MPVK gives pilots an unrestricted view of the main mission areas by enlarging the cockpit floor window to 350%. Start of construction of hall 3. Start of small-series rebuilding the Junkers F 13.  


Expansion of the Swiss company with its site in Malters in the Swiss canton of Lucerne. The eight thoroughbred specialists here mainly deal with difficult and demanding repairs and modifications. 

End of 2019

Start of construction of hall 4 

Development of the detail production department
Expansion of the production depth to include the machining step milling.


Move into hall 4


Junkers A50 Junior construction of the break cell and the prototype

At the end of 2021

Successful maiden flight


Start of development and construction of the break cell and prototypes of the Junkers A60

The Kaelin Spirit

Our specialists – full of passion for aviation

"Reliable, professional and passionate – the Kaelin team ensures the highest level of customer satisfaction. These excellently trained specialists in complex aircraft structures perfectly displayed their "Kaelin spirit" within our project. You can rely on this company."

Mario Leupi, Project Manager RUAG AG


Two sites,
one team


Airplanes in the belly: the Kaelin crews

Dedicated teams of committed employees who implement your dream of flying with heart and mind. Stationed at our "homebases" in Germany and Switzerland.

Read more



Do you have any questions or would
like to find out more about our company? 
We are looking forward to your call or message.

T. +49 (0) 7423 80 90 7 - 0