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EASA Part 145 and FAA certified aeronautical equipment maintenance

In our cutting-edge hangar at Siegerland Airport (EDGS) we offer all repair and maintenance services for single- and multi-engine piston and turboprop aircraft, business jets and helicopters.

We are also an authorised service centre for:

  • Pilatus (PC-6, PC-12 and PC-24)
  • Williams International Line Maintenance Elite (FJ44)
  • Honeywell Line Maintenance Engine (TFE731-2, -3, -20 and TPE331-12, -14)
  • Blackhawk Aerospace


You most reliable companion on every flight: regular and professional maintenance.


MRO (maintenance, repair, overhaul)

Alongside continuous further development and process optimisations, we have been a reliable and strong partner for our customers for more than 25 years. As an authorised Pilatus Service Centre, we carry out all maintenance work and warranty services on PC-6, PC-12 and PC-24 aircraft.

Our range of services encompasses maintenance, repair and overhaul work on various types of aircraft: Pilatus

  • PC-6/PC-12/PC-24
  • Bombardier Challenger 604
  • Learjet 31/31A/35/35A/36A/45/55/55B/60
  • Cessna 208/208B PT6 + 208/208B Supervan
  • General aviation: up to 5.7 tonnes (piston and jet engines)

As a certified CAMO+ (Continuing Airworthiness Management Organisation), we offer our customers a complete management service for maintaining the airworthiness of their aircraft.

That includes the following services:

  • Creation/approval and regular review of an Aircraft Maintenance Programme (AMP)
  • Airworthiness assessment/certification
  • Maintenance planning and the coordination of scheduled and unscheduled maintenance work
  • Monitoring and evaluation of guidelines from public authorities and manufacturers
  • Archiving of maintenance documents
  • Support with and completion of airworthiness certification
AOG Service

If your aircraft has been grounded due to a technical defect, the costs can quickly mount up. All the more reason why you need a partner who is able to address the problem reliably, and above all else, quickly. Our mobile operations team is available for you around the clock, and will be pleased to propose a solution to you promptly regarding alternative logistics. We also provide you with quick and straightforward support with the international delivery of spare parts in order to accelerate the repairs. As part of our AOG services, we also organise the approval from the responsible authority without high downtimes, so that you can resume your flight operations as quickly as possible.

Avionics service

Air Alliance is your contact for everything surrounding the electronic equipment on your aircraft. Whether it is a scheduled inspection, troubleshooting or a conversion. We can offer you these services with our qualified employees – from General Aviation aircraft through to medium-sized business jets. We also provide our avionics services for selected types of helicopter.

Interior configuration

It goes without saying that the interior of your aircraft is more than just a visual factor. An individual interior design makes a significant contribution to your well-being in the aircraft – whether it is a private, business or passenger aircraft. We can offer you basic overhaul, basic cleaning, deep cleaning, leather cleaning and polishing. Tell us about your individual requirements. When preparing and maintaining your aircraft, we proceed with great care. After all, you should be convinced of the end result and be able to enjoy your interior design for a long time.


Air Alliance holds EASA Part 145 maintenance organisation approval and EASA Part 21 J Design Organisation approval.

Spare parts and equipment

AOG Support

When it comes to spare parts, the right kind of quality is important. It is equally important for the spare parts to be available where they are needed. Despite the best maintenance, technical problems can affect your valuable aircraft at the most inconvenient of places. We can provide our solutions in the most remote locations so that you can quickly become airborne again.

Pilatus Aircraft

As a sales and service centre for Germany and Austria authorised by Pilatus, we are your contact regarding original spare parts and services for your Pilatus aircraft.

Bombardier Learjet

Over the years, we have developed comprehensive expertise in Learjet maintenance. You can benefit from our knowledge when it comes to spare parts.

Textron Aviation – Cessna Aircraft

As a former dealer of Cessna aircraft, we have extensive experience with all piston engine Cessna aircraft and Caravans. This is another area in which you can benefit from our knowledge of spare parts.

Other manufacturers

The variety of aircraft types is considerable. We look forward to rising to your challenge, and finding the right solutions for the rarest problems.

Avionics equipment

We are an authorised dealer for avionics equipment from various well-known manufacturers, such as GARMIN, Honeywell International, Bendix King and Collins Aerospace. We will be pleased to offer you products and services from the manufacturers to make your flight experience even better – from a straightforward USB connection, to ADS-B capable Mode-S transponders, through to the latest autopilot systems and highly integrated electronic primary flight displays; including installation and STC or minor design change documents as required.

Our strengths – your leading edge


We have been operating in the avionics and aviation sector since 1993. Our expertise is based on a non-reproducible wealth of experience.

A comprehensive portfolio

Consider us to be a partner for all your concerns. We can offer you a comprehensive range of products and services.

Certified quality

Safety and attention to detail are our top priorities. Our maintenance organisation is certified according to EASA Part 145 of the European Aviation Authority.

Retrofitting requests

As a Design Organisation certified according to EASA Part 21, we can carry out conversion requests and design modifications to your aircraft and take care of the official approval.

International network

Our business network is positioned ideally for the implementation of your needs and requirements.


One of the most important success factors for satisfied customers is our enthusiasm for our profession. It motivates us to be a step ahead at all times.

Contact Us

We look forward to hearing from you. Call us or send us an email. A contact person from the relevant specialist department will get in touch with you.

Careers at Air Alliance

Working at Air Alliance means growing with new challenges. As an individual and as a team. Whether it is on the ground or in the air – with us, you can put your strengths to good use.


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