For buyers who want more control and more access than fractional or charter provides — but aren’t ready to absorb the full cost of sole ownership — private jet shared ownership offers a middle path worth understanding.

Co-ownership, at its core, is exactly what it sounds like: two or more parties jointly own an aircraft, share the operating costs, and divide access according to an agreement they negotiate upfront. Done well, it can be an elegant solution. Done poorly, it creates exactly the kind of conflict and cost that buyers were trying to avoid in the first place.

Here’s what you need to know before entering a co-ownership arrangement.

How Co-Ownership Differs From Fractional Programs

It’s worth drawing a clear line between private jet shared ownership arrangements and commercial fractional programs like NetJets, Flexjet, or Wheels Up.

In a commercial fractional program, you’re purchasing a share of a managed fleet. The operator controls the aircraft, the crew, the scheduling, and the operational infrastructure. You have contractual access to an aircraft — not necessarily your specific aircraft — and the program manages everything else. It functions more like a sophisticated membership than traditional ownership.

In a true co-ownership arrangement, you and your co-owner or co-owners jointly own a specific aircraft. You share the title, the costs, and the responsibilities. There’s no management company intermediary unless you choose to hire one. The arrangement is governed by a co-ownership agreement that you negotiate and execute privately.

The distinction matters because the rights, responsibilities, and risks are meaningfully different between the two models.

The Potential Benefits

When the right parties come together around the right aircraft, co-ownership can work very well.

Cost sharing. The most obvious benefit is economic. Fixed costs — hangar, insurance, crew salaries, management fees — are split between owners. For an aircraft that might cost $300,000 to $500,000 or more annually to operate, sharing those fixed costs with one other party cuts the baseline expense significantly, even accounting for the fact that variable costs (fuel, maintenance) are allocated based on usage.

More access than charter. Co-owners have guaranteed access to their specific aircraft on the terms defined in their agreement. There’s no availability uncertainty the way there is with on-demand charter, and no worrying about whether the model you want is available on short notice.

More control than fractional. Co-owners can make decisions about how their aircraft is maintained, where it’s hangared, what crew it flies with, and whether it generates charter revenue. That level of control isn’t available in a commercial fractional program.

The Risks That Derail Co-Ownership Arrangements

The benefits are real, but so are the ways this structure can go wrong. Most co-ownership arrangements that unravel do so for predictable reasons.

Scheduling conflicts. If two owners with similar travel patterns want the aircraft during the same peak periods — holiday weekends, summer travel months, major events — the scheduling framework becomes the source of ongoing friction. A well-drafted co-ownership agreement addresses this directly, but no agreement can fully eliminate the tension when demand exceeds availability.

Disagreements on maintenance and capital decisions. Aircraft require significant unplanned expenditures — engine events, avionics upgrades, interior refurbishment. Co-owners don’t always agree on when to spend, how much to spend, or which vendor to use. These disagreements can be minor irritants or partnership-ending disputes, depending on the parties involved and how the agreement handles decision-making authority.

Exit complications. What happens when one owner wants out? If one party wants to sell their share and the other doesn’t want to buy it or doesn’t have the capital to do so, the exit can become complicated. The co-ownership agreement needs to address buyout rights, right of first refusal, valuation methodology, and what happens if the parties can’t agree — before anyone is trying to exit.

Misaligned expectations. Co-ownership works best when the parties have similar flying profiles, similar standards for aircraft condition and service, and similar tolerance for the ambiguities that come with shared ownership. Misalignment on any of these dimensions is a slow source of conflict.

Key Terms Every Co-Ownership Agreement Should Address

If you’re pursuing a co-ownership arrangement, the agreement is the foundation. It should clearly address at minimum:

• Ownership percentages — what share each party holds
• Cost allocation — how fixed costs are split and how variable costs are tracked and billed
• Scheduling protocol — how access is divided, how conflicts are resolved, and what happens during peak demand periods
• Maintenance authority — who has decision-making authority for routine maintenance versus major capital expenditures, and how disagreements are resolved
• Charter policy — whether the aircraft will be placed on charter, and how that revenue is split
• Buyout and exit provisions — right of first refusal, valuation methodology, timeline for exit
• Dissolution — what happens if the parties decide to sell the aircraft entirely

This agreement should be drafted with the involvement of an aviation attorney. A generic partnership agreement doesn’t account for the specific operational and regulatory nuances of aircraft co-ownership.

The Right Structure for Co-Ownership

Most co-ownership arrangements are structured through a limited liability company (LLC), with each owner holding a membership interest proportional to their ownership share. The LLC owns the aircraft, and the operating agreement governs the relationship between the members.

This structure provides liability protection, simplifies the ownership registration with the FAA, and creates a clean framework for cost allocation and exit. It also provides a layer of separation between the aircraft and the personal assets of each owner — which matters more than some buyers initially appreciate.

Who Co-Ownership Is Right For

Co-ownership tends to work best for buyers who have an existing relationship with their prospective co-owner — a business partner, a close colleague, or a trusted peer whose travel patterns and standards they know well. Entering a co-ownership arrangement with someone you don’t know is a significant risk, regardless of how well the agreement is drafted.

It also works better for buyers who have realistic expectations about access. Co-ownership is not sole ownership. There will be times when the aircraft is unavailable to you. If guaranteed, unrestricted access is a priority, sole ownership is the right answer — or a commercial program that contractually guarantees availability.

For the right parties, though, co-ownership can deliver a genuinely excellent ownership experience at a meaningfully lower cost basis than sole ownership. The key is going in with clear terms, realistic expectations, and the right partner.

Considering aircraft co-ownership? Holstein Aviation can help you evaluate the structure, identify the right aircraft for a shared profile, and navigate the acquisition process. Contact us to start the conversation.