If you own or operate a business jet capable of transatlantic or transpacific travel, you’ve probably heard the term FANS 1/A+. It comes up in pre-buy inspections, in discussions about avionics upgrades, and increasingly in conversations about whether an older aircraft can still fly the routes its owner needs.
Understanding what FANS 1/A+ actually does — and what happens without it — is becoming essential knowledge for serious aircraft owners.
What FANS 1/A+ Is
FANS stands for Future Air Navigation System. It’s a suite of datalink communication technologies that allows pilots and air traffic controllers to exchange information digitally, over routes where traditional radio communication is unreliable or impossible.
The two core components are:
CPDLC — Controller Pilot Data Link Communications. Instead of voice transmissions over high-frequency (HF) radio — which is notoriously unreliable, subject to static, and requires both parties to be available at the same moment — CPDLC allows air traffic controllers to send clearances, instructions, and requests as text messages directly to the flight deck. The crew responds with a simple accept, reject, or standby. The exchange is documented automatically.
ADS-C — Automatic Dependent Surveillance Contract. ADS-C allows aircraft to automatically transmit position reports to air traffic control at defined intervals. In oceanic airspace where radar coverage doesn’t reach, ADS-C gives controllers an accurate, real-time picture of where aircraft are — without requiring voice position reports over HF radio.
The “1/A” in FANS 1/A refers to two standards that developed in parallel — FANS 1 was the Boeing implementation, FANS A was Airbus. The combined standard, FANS 1/A, is now the global benchmark. The “+” designation indicates the aircraft is also capable of VHF datalink (VDL Mode 2), the preferred data channel in regions with VHF coverage.
Why It Matters for Oceanic Operations
The primary driver for FANS 1/A+ is oceanic airspace — specifically the North Atlantic and Pacific, where the overwhelming majority of long-range business jet routes operate.
The North Atlantic Track System (NAT-HLA) handles thousands of flights per day crossing between North America and Europe. Above flight level 285, FANS 1/A+ equipage has been required since 2015. Aircraft without it are excluded from that airspace, which means they’re pushed to less efficient altitudes or denied certain track assignments altogether.
The practical consequences are real: longer flight times, higher fuel burn, and in some cases route restrictions that make certain nonstop city pairs impractical.
Pacific operations — including routes across the North Pacific and to Asia and Australia — have similar requirements. As ICAO continues to mandate FANS equipage in additional flight information regions globally, the list of airspace where non-FANS aircraft face restrictions keeps growing.
What’s at Stake for Buyers of Pre-Owned Aircraft
Many pre-owned long-range business jets — particularly aircraft manufactured before 2010 — were delivered without FANS 1/A+ or with early implementations that don’t meet current requirements. For buyers considering these aircraft for international operations, avionics status is a material consideration.
Retrofitting future air navigation system onto an aircraft that lacks it is possible, but it isn’t simple or cheap. Depending on the aircraft type, the existing avionics architecture, and the depth of the installation required, a full FANS upgrade can run from $300,000 to well over $500,000. Some older platforms require concurrent upgrades to flight management systems or data link hardware that add to both the cost and timeline.
Before closing on any aircraft intended for intercontinental use, buyers should ask:
- Is FANS 1/A+ installed, and to what standard?
- Has the installation been certified by the relevant airworthiness authorities?
- When was the avionics last updated, and are current software versions in compliance?
- Is the aircraft eligible for RVSM operations in NAT-HLA airspace?
A qualified avionics shop should review the aircraft’s FANS status as part of any pre-purchase evaluation. The answers affect both operational capability and resale value.
FANS and Aircraft Value
Avionics compliance increasingly functions as a value bifurcator in the pre-owned jet market. Two aircraft of the same type, year, and total time can command meaningfully different prices based on whether their avionics stacks are current.
For long-range aircraft such as the Global Express, Gulfstream G550, Falcon 7X, and Challenger 604, FANS 1/A+ has effectively become a baseline requirement for buyers intending to operate internationally. An aircraft without FANS 1/A+, or one equipped with an outdated implementation, becomes a more limited platform competing in a smaller pool of potential buyers. That limitation can materially impact both acquisition value and future resale value.
For shorter-range aircraft that will never cross an ocean, FANS 1/A+ may be irrelevant to operations. But it’s worth understanding what airspace you intend to access and confirming equipage before you close.
The Bottom Line
FANS 1/A avionics exists because the world’s oceans are vast, radar doesn’t reach them, and HF radio is an inadequate system for modern long-range operations. The compliance requirements are real and expanding.
For any owner or prospective buyer of a long-range business jet, FANS 1/A+ status should be part of the conversation from day one — not a question that surfaces after the deal is already done.
Evaluating a pre-owned aircraft for international operations? Holstein Aviation represents buyers through the full acquisition process — including avionics compliance review. Contact us to talk through your mission.
