The GEnx engine family powers some of the world’s most advanced widebody aircraft, including the Boeing 787 Dreamliner and Boeing 747-8. Known for fuel efficiency, reduced noise, and advanced composite materials, GEnx engines are high-value assets that demand specialist oversight throughout their lifecycle.
GEnx-1B (Boeing 787) – Operator Challenges
- Advanced composite fan blades and turbine components requiring specialist expertise
- Long maintenance intervals with high-value workscope decisions
- Lease returns and acquisitions demanding robust records and technical validation
How TGIS Supports
- Independent shop visit management and workscope challenge
- Lease return and acquisition support, protecting cost and contract position
- Records and compliance oversight for smooth transitions
- Cost modelling to forecast exposure and inform long-term decisions
GEnx-2B (Boeing 747-8) – Operator Challenges
- Large, complex widebody engines with long shop visit durations
- Scheduling pressure driven by limited shop capacity
- High documentation standards required to preserve asset value
How TGIS Supports
- End-to-end shop visit oversight and MRO management
- Independent lease return support
- Technical records review and compliance management
- Commercially informed cost modelling to manage financial risk
Our Experience with GEnx Engines
TGIS has supported large 787 acquisitions and fleet transitions involving close to 100 GEnx engines, providing operators, lessors, and investors with clear, independent technical leadership.
Our experience includes:
- Building accurate long-term maintenance and cost forecasts
- Supporting shop selection and workscope negotiation
- Identifying emerging risks (including known HPT blade issues) before they impact asset value
- Reducing unnecessary cost exposure during transitions and redeliveries
As an independent, engine-specialist partner, we help clients make confident, commercially sound decisions across the full GEnx lifecycle.

