Specialising in business jets, regional aircraft and helicopters.

previous arrow
next arrow

ALTEA is retained by those who want fresh thinking secured by experience in asset management; procurement and sales; financial solutions and design.

An expert team interprets knowledge and insight to achieve extraordinary results. From concept to completion, our authoritative approach and meticulous attention to detail protects your interests.

ALTEA was founded by Andrew Butler, Robin Dunlop, Jean Sémiramoth and Angus von Schoenberg, four highly experienced aviation professional partners specialising in business jets, regional aircraft and helicopters. They are supported by a multi-skilled and multi-lingual team with ingrained expertise across transaction & asset management; financing; contractual & commercial solutions; design & engineering.

Through a proficient and balanced combination of traditional skills, unconventional techniques and innovation, ALTEA brings a respected perspective that is valued by manufacturers, completion and maintenance centres, financiers, and customers alike – and is designed to deliver success.

Altea | Basel | Copenhagen | London | Toulouse | Vancouver


$120m Equity and >$200m Debt raised for airlines and lessors


35+ Industry Reports


35+ Benchmarking Studies


415+ Aircraft Inspections & Valuations


50+ Aircraft Repossessions


140 years collective completion experience
27 VIP Completions


Aircraft worth $1.1 billion acquired,sold or leased

previous arrow
next arrow

Meet the team


With nearly 25 years of business aircraft experience ranging from aircraft inspections and appraisals through to their acquisition and sale, Andrew is primarily focused on the asset management areas of ALTEA’s partnership expertise, including aircraft delivery oversight, aircraft acquisitions and sales. ALTEA’s comprehensive client portfolio of banks and financial institutions, Ultra High Net Worth Individuals and Heads of State, rely on his depth of technical knowledge which instils confidence and nurtures complete peace of mind.


With a career originating at Airbus and Bureau Veritas, Jean brings considerable experience in aviation asset management projects. This includes aircraft appraisals, registration transfers, operator assessments, aircraft sales and acquisitions. Multidisciplinary, with a special focus on business aircraft, he is dedicated to finding the optimum solution to fulfil each customer’s individual requirements. His methodical approach and rigorous attention to every aspect and detail, delivers an incisive edge to the ALTEA partnership.


Starting with Groupe Paribas and subsequently engaged by Embraer and Airstream International Group, Angus was instrumental in the latter’s transformation into a leading regional aircraft remarketer. Later he was also one of the group that founded the regional aircraft lessor, TrueNoord in 2016. Specialising in regional aircraft finance, remarketing and economics for the ALTEA partnership, Angus has successfully managed numerous transactions across a wide variety of aircraft types and is a respected member of the global aviation finance community. He enables customers to make informed decisions on fleet planning, aircraft finance, procurement and disposal issues.


An industrial design engineer, with a passion for aviation that spans more than two decades, Robin heads up ALTEA’s dedicated design consultancy services working on some of the most sophisticated, technically challenging, and creative aircraft interiors within the industry. Long-term relationships founded on trust allow complex and sophisticated projects to be placed securely in his hands where his creative perspective delivers innovation and dynamism for exacting customers.

ALTEA Associates

Chris Holliday
  • 35 years in aviation, specialising in regional aviation, corporate communications, product marketing, aircraft and airline analysis, airline operations and sales, future technologies
  • On the board with Cranfield Aerospace Solutions, Aurigny Air Services, Highlands & Islands Airports

Chris is an extremely knowledgeable aviation consultant. His detailed and constructive approach is respected by peers and customers alike.

Michael Hoby Andersen
  • 26 years in aviation, licensed flight engineer, trusted right-hand customer support
  • Based in Copenhagen
  • Fluent in Danish, English

Michael’s in-depth fixed wing and rotary technical expertise instils complete confidence that your aircraft is fit to fly.

Rainer Albecker
  • 45 years in aviation, over 100 aircraft completions
  • Based in Basel – a worldwide cluster for VVIP aircraft interior customisation
  • Fluent in German, French, English

Rainer’s unrivalled 45 years’ of VVIP aircraft interior customisation understanding is dedicated to providing an exemplary ALTEA customer experience.

Boeing Business