Switzerland-based airliner maintenance, repair and overhaul group SR Technics is moving into the business aircraft completions market through a new alliance with TAG Aviation. The partnership will focus on executive versions of Boeing and Airbus airliners, and will also offer refurbishment and maintenance. The work will be done at SR Technics’s main engineering base in Zurich. The partners have yet to confirm how responsibilities will be shared between them. SR Technics is a subsidiary of Abu Dhabi investment group Mubadala, which also owns another MRO group–Abu Dhabi Aircraft Technologies. The Arabian Gulf region is a key market for Boeing and Airbus bizliners.