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Fact Sheets

Following are some of our factsheets providing a brief summary of specific services.

Aircraft Deliveries

Aircraft Audits

Lease Support Services

Airline Support Services

BFE Management


Flight Operations Support

Corporate Aircraft Support

Maintenance Reserve Analysis & Review

Airline Assessment



Pestalozzistrasse 25


Hamburg, DE 22305




Latitude: 53.587591

Longitude: 10.048302



Tel :+33 ( 0 ) 5 34 36 80 80

Fax :+33 ( 0 ) 5 34 36 80 89


The Team

Dr. Mohamed El-Boraï,Managing Director

Dr. Mohamed El-Boraï,

Managing Director

Mohamed El-Borai graduated with a Ph.D. in Computational Aerodynamics from the UK after completing his apprenticeship with Hawker Siddeley Aviation (Hatfield). German born, Egyptian, he then joined the Boeing Commercial Airplane Co. in Seattle in 1980.


In 1982 he joined Saudi Arabian Airlines in Jeddah to set up the Flight Operations Performance Engineering department and subsequently headed the Flight Operations Automation.


Five years later, in 1987, having held various senior positions in Flight Operations he left to join Airbus Industrie. Starting as Regional Manager Middle East and Africa of Airbus Industrie’s Product Support Division he reached the position of Vice-President Customer Support Services in charge of both the Product Support and Training.


In 2001 he founded Reliance Aerospace Solutions and while setting up the company, Mohamed joined Thomas Cook AG. as V.P. Airline Operations and subsequently was appointed Managing Director of the UK Charter Airline JMC (now Thomas Cook Airlines UK) and Board Member of the Thomas Cook UK Executive Board. He completed a successful turnaround of the airline during the difficult period between 2001 and 2002.


From 2002 onwards he has concentrated on developing Relaer where the income tripled in the first five years.

Claus-Peter Sülflow ,Senior Vice President

Claus-Peter Sülflow ,

Senior Vice President

Claus has enjoyed a multi-faceted career within the aviation industry, having more than 27 years of aviation experience.

He initially started at MTU Maintenance GmbH, moved to Hapag-Lloyd Flug in 1986, joined Deutsche Airbus end of 1990, where he was the Project Manager for the first A310 Pax to Freighter conversion for FedEx. 

In 1994 he worked for Airbus in Toulouse as Deputy Programme Director for A300/A310. End of 1998 he left Airbus to join the Board of ASL GmbH as Vice President Base Maintenance, mainly involved in heavy maintenance for all Airbus types and MD 80.

Since 2003, and until joining Relaer, he was the Technical Director, Postholder Continuing Airworthiness Management and CEO/Head of Design Organisation  for Hapag-Lloyd Flug, now named TUIfly GmbH, in Hannover. His main focus was on productivity improvement and cost savings. In 2010 TUIfly Technik started to implement LEAN Maintenance procedures. 


Rayan El-Boraï,Director

Rayan El-Boraï,


He graduated with a Masters in International Business from the Instituto de Empresa (IE) in Madrid.  Rayan worked on Maintenance Reserve business modelling as well as airline business plans. He was part of the team involved in a start-up airline in Africa where he prepared the business plan and held the function of Implementation Manager.


Rayan has been in charge of business development for Relaer since 2010. 

He has established strategic partnerships with various companies in order to broaden Relaer’s market reach.

His presence and contribution has markedly improved the customer base and activity portfolio.


Rayan is also actively involved in strengthening Relaer’s presence in Aviation finance activities. 


Furthermore, he has prepared the business case for Relaer’s sister company Relaer Deutschland GmbH.


Fluent Spanish speaker and perfectly bi-lingual in French and English.


Paul Mettery,Technical Manager

Paul Mettery,

Technical Manager

Paul joined Relaer in 2014 having completed a degree in Mechanical and Aeronautical engineering at Toulouse University. This qualification was obtained in addition to his background in production engineering with particular emphasis on composite materials. 
Previously, Paul completed an analysis on addressing the problem of FOD on the assembly line within ATR’s Quality management department. This experience provides him the insight needed to address customer demands and will be put to good use in Final Assembly Line quality inspections. Paul was part of the team of inspectors on the first A380 delivery to Etihad. 
Paul is currently working on the Hamburg Final Assembly Line on A321, A320 and A380 deliveries for a variety of clients including Thomas Cook, Air Asia and Etihad.