Contact us via e-mail:

For AOG:

Phone 0044 1279 297 000

Our Approvals


We have 2 offices in the UK (headquarters) and Sri Lanka representatives around the World enabling us to service clients in time zones and regions all over the world. Please direct inquiries to our email address or phone us on the numbers below.

Headquarters, Design Office - UK
KNSI Aviation Engineering Ltd
Suite 11B, Diamond Hangar
Long Border Road,London Stansted Airport,
Stansted Essex,
CM24 1RE, UK

Tel: +44 (0)1279 297 000

Fax: +44 (0)1279 681 235

Design Office, POA and Spares - Sri Lanka
No. 134,
St. Joseph Street
Sri Lanka

Tel.: +94 (0)31 22 27 100

About us

KNSI Aviation Engineering is managed and operated by industry professionals with over 30 years of experience. Our staff members operate from Asia, Europe, North America and Australia. Our expertise and experience coupled with our Design, Production and Maintenance Approvals offers a distinct advantage to suit the needs of each customers' diverse requirements.

We pride ourselves on providing quality service with competitive prices and timely delivery. We work diligently to meet and exceed our customer expectations, no matter how complicated the needs may be. We assure you our most prompt services at all times.

  • Customer Oriented: It is KNSI’s objective to provide our clients with high quality products, services at competitive prices, meeting prompt delivery schedules, coupled with superior customer service by maintaining industry renowned quality systems.
  • Expertise: We have responsive team with extensive experience in the industry. Our expertise extends to vast boundaries from aircraft design to spare parts supply.
  • Dedication: Our team is sensitive to customer requirements and is ready to provide support where and when a requirement arises.
  • Integrity: KNSI’s backbone is its experienced industry expert staff and contains full capacity to compete with the industry leaders. Our success lies in serving the demanding requirements of our existing domestic and international clients.


Mr.Kalyana P. B. Obeysekara (Obey), was a former senior structures engineer and spearheaded the introduction of Airbus A340/A320 aircrafts to the Airlanka Airlines. In his career he has worked in many multinational companies such as GAMCO-UAE, SR-Technics UK in positions of Senior Structures Engineer and Compliance Verification Engineer (CVE).

At his previous appointment, as the Managing Director of TASS-EU, Mr. Obeysekara served a number of world renowned airlines including Sri Lankan Airlines with multi-disciplinary engineering support and was able to bring the EASA Part 21.J/G offices to Sri Lanka along with the engineering support to Aircraft manufacturers such as Bombadier, Learjet and others which brought Sri Lankan engineering into the World market.

Currently Mr. Obeysekara is the CEO and Head of Design at KNSI Aviation Engineering headquartered in Stansted Airport UK.

Kalyana Obeysekara

Standard Terms Of Business

KNSI carries out business as per the standard terms and conditions listed in the document here: Standard Terms of Business 2016