Private Jet Retrofits: LEO Wi-Fi, Cabin Management and Avionics Must Be Planned Together
Why It MattersRetrofit demand is pushing owners and shops to treat connectivity, cabin and avionics upgrades as one integrated programme, with regulatory recommendations such as ADS-B In increasingly priced into older aircraft values.
What happened
A feature from Sarah Larranaga Aviation Design lays out how upgrading connectivity, cabin management and avionics on a business jet involves separate suppliers, certifications and lead times. On connectivity, older business jet Wi-Fi relies on geostationary satellites, while low Earth orbit (LEO) satellites fly lower and shorten signal latency. Gogo's year-end report says its FDX antenna for large jets offers 200 Mbps and the smaller HDX offers 60 Mbps; Starlink service is cited at up to 220 Mbps download and 25 Mbps upload. The article notes these are vendor figures and that real-world performance varies with aircraft, antenna placement and network load. Gogo received FAA supplemental type certificate (STC) approval, issued through Gulfstream Aerospace, for its Galileo HDX on Gulfstream aircraft.
On cabin management, Duncan Aviation warns that an obsolete cabin management system (CMS) can put a jet at risk of not being dispatched, since the system also handles lighting, cabin briefing, lavatory operation and galley functions. Retrofit options it lists include Collins Aerospace Venue, Honeywell Ovation Select and Lufthansa Technik Nice. Inflight says Collins reports Venue has 1,700 installations on 50 aircraft models. Duncan notes that wood refinishing is often one of the biggest costs of a CMS upgrade, because new controls and displays must fit existing cabinetry.
On avionics, the NTSB has recommended ADS-B In traffic display and audible traffic alerts for aircraft already required to carry ADS-B Out. This is a recommendation, not a regulation, and the FAA has not committed to it. Older aircraft with minimum-compliance ADS-B Out systems would face the greatest upgrade burden, and the market tends to price future retrofit obligations into current aircraft values.
Integration in practice
Larranaga refurbished a Gulfstream G450 over five months, telling Robb Report's Malaysia edition that every new system had to work with the existing Gulfstream systems.
Completed examples include Verdant Sky, a Dassault Falcon 2000 fitted with Starlink Wi-Fi, a Rockwell Collins Venue CMS, Alto sound and Prism lighting. West Star Aviation completed it, and it has been shortlisted for the 2026 Private Jet Design Award. Another is Paris Hilton's SlivAir Gulfstream G450, refurbished by Standard Aero in Springfield, Illinois and taken back to the bare bones.
Industry impact & what to watch
The feature shows why retrofit work on a business jet is rarely a single-box swap. A LEO antenna, a cabin management system and an avionics change each sit on a different certification path and supply chain, so the schedule is set by whichever piece has the longest lead time. A five-month G450 refit, with every new system required to work alongside the existing Gulfstream systems, is the kind of sequencing problem that integrators and completion centres are paid to manage.
The ADS-B In question adds a valuation dimension. Because the market tends to price future retrofit obligations into current aircraft values, a recommendation that has not become a rule can still move how older, minimum-compliance aircraft are assessed. The point to follow is whether the FAA commits to the NTSB recommendation, since that decision would turn a pricing assumption into a defined upgrade cost.
