A fixed base operator, usually shortened to FBO, is a commercial business that an airport authorizes to sell fuel and provide aeronautical services to aircraft on the field. Fueling is the defining function, but the same operator typically handles parking, towing, hangar storage, passenger and crew amenities, and often maintenance through an on-site repair station. Most general aviation airports host at least one FBO, and busier fields may have two or three competing for traffic.
The airport sponsor — usually a city, county, or port authority — leases ramp space and buildings to the FBO under a long-term agreement. The FBO then sells fuel and services directly to pilots and aircraft operators. Facilities range from a single-counter shop at a rural airstrip to sprawling corporate terminals at major metro airports.
Fuel Sales: The Core Business
Fuel sales generate the majority of revenue for most FBOs. Two products dominate: 100LL avgas for piston-engine aircraft, and Jet A kerosene for turbine-powered planes. Retail pricing varies widely by region and by each FBO’s wholesale supply agreements. Both products carry federal excise taxes, roughly 19.4 cents per gallon on avgas and 21.9 cents per gallon on jet fuel for noncommercial flights, and state taxes stack on top.
Operators of turbine aircraft can reduce per-gallon costs through contract fuel programs, which aggregate the buying power of thousands of aircraft to negotiate bulk discounts. Some programs report savings of 55 to 65 cents per gallon compared to retail posted prices. Piston pilots have a simpler lever: most FBOs waive their ramp or handling fee if you buy a minimum amount of fuel, often somewhere between 10 and 30 gallons depending on the aircraft and the FBO’s policy.
Aircraft owners also have a federally protected right to fuel their own planes. Under Grant Assurance 22, any airport that has accepted federal improvement grants cannot prevent owners from servicing their own aircraft with their own employees and equipment, including fueling. The airport can set reasonable safety rules and can deny self-fueling if the owner lacks the proper equipment, but it cannot ban self-service to protect an FBO’s fuel monopoly.1Federal Aviation Administration. Airport Compliance Manual – Chapter 9: Unjust Discrimination between Aeronautical Users
Ground Handling and Ramp Operations
Once an aircraft lands, FBO ground crews take over. Marshaling guides the pilot to a parking spot with hand signals or lighted wands. Towing equipment, from small tugs for single-engine planes to heavy-duty tractors for large business jets, moves aircraft on the ramp and in and out of hangars. Ground power units supply external electrical power to turbine engines before start. The work sounds routine, but mishandling a $30 million business jet on a crowded ramp ends careers and generates insurance claims.
FBOs charge handling fees for this work, and the fee scales with the aircraft. A large chain recently standardized its piston-aircraft handling fee at $30 for singles and $60 for twins, both waivable with a modest fuel purchase.2Signature Aviation. Signature Aviation Adds Transparency and Reduces Fees for Piston Operators Large-cabin jets, which require more crew, heavier equipment, and more ramp space, push handling fees into the hundreds. At high-demand airports during major events, surcharges climb sharply higher.
Winter adds another layer. De-icing an aircraft before departure involves spraying heated glycol-based fluid to remove ice, frost, or snow from critical flight surfaces. Costs depend on aircraft size, the type and thickness of contamination, and the volume of fluid used. Light frost removal on a midsize business jet might run a few hundred dollars; a full de-ice in heavy winter conditions on a large-cabin jet can cost several thousand.3National Business Aviation Association. Deicing: Dollars and Sense Ramp crews also provide pressurized oxygen for high-altitude flight and nitrogen for tire servicing.
Aircraft Storage Options
Every aircraft needs somewhere to sit between flights, and FBOs offer several tiers at very different price points.
- Tie-downs are the cheapest option. The aircraft sits outside, secured to the pavement or ground with straps or chains. Monthly costs commonly run from around $50 to $150. Full exposure to sun, rain, wind, and temperature swings accelerates wear on paint, seals, and avionics.
- T-hangars are individual enclosed bays shaped like the letter T, designed for single-engine and light twin aircraft. Monthly rents typically range from roughly $150 to $500 depending on the market, with long waitlists at busy airports.
- Corporate box hangars are large enclosed structures with climate control, often exceeding 10,000 square feet, sized for multiple midsize or large business jets. They command premium rents and are frequently leased by corporate flight departments or charter operators on long-term agreements.
At many publicly owned airports, hangar demand far exceeds supply, and waitlists can stretch for years. Airports typically manage these lists on a first-come, first-served basis and require that tenants actually use the space for aircraft storage, not as a workshop or warehouse. Subleasing a hangar is usually prohibited or heavily restricted, and tenants who don’t keep an airworthy aircraft in the hangar risk losing their lease.
Maintenance and Repair Facilities
Many FBOs host or sublease hangar space to FAA-certificated repair stations. These are maintenance facilities holding a Part 145 certificate, which requires approved repair station and quality control manuals, properly trained personnel, and adequate tooling and housing for the work performed.4eCFR. 14 CFR Part 145 – Repair Stations The certificate specifies which articles — airframes, engines, propellers, avionics, or components — the station is rated to work on.
For aircraft owners, having a repair station on the field matters most at annual inspection time. Federal regulations require that no person may operate a civil aircraft unless it has received an annual inspection within the preceding 12 calendar months and been approved for return to service by an authorized person.5eCFR. 14 CFR 91.409 – Inspections That inspection often uncovers items the same shop can address on the spot. Storage and maintenance under one roof is a significant draw when owners choose where to base their aircraft.
Passenger and Crew Amenities
FBOs double as terminals for private aviation, and the quality of the experience varies enormously. At the high end, expect executive lounges with leather seating, conference rooms, full kitchens, and concierge staff who coordinate rental cars, hotel rooms, and catering before you’ve walked through the door. At smaller operations, the “terminal” might be a modest lobby with a coffee pot and a weather computer.
Flight crews get dedicated spaces designed for long duty days. Quiet rest rooms give pilots a place to sleep during layovers, which matters under federal rest requirements. Planning rooms equipped with weather displays and internet access let crews file flight plans and review notices to airmen before departure. These crew facilities are typically included in whatever handling fee the aircraft operator is already paying.
The FBO courtesy car is one of the more charming traditions in general aviation: an older vehicle, often donated or retired from a fleet, that transient pilots can borrow for a quick lunch run or trip into town. The unwritten rules are simple. Bring it back with at least as much fuel as you found, don’t disappear with it for days, and return it clean. Not every FBO offers one, and the cars range from perfectly serviceable to mechanically eccentric, but pilots appreciate the gesture. For crews needing something more reliable, most FBOs also coordinate standard rental car pickups.
Catering is another key service at FBOs serving corporate traffic. Staff coordinate with local vendors to deliver meals directly to the aircraft before departure, handling boxed lunches through multi-course meals for long international flights. The FBO manages the timing so food arrives when the crew is ready.
Federal Rules That Shape FBO Competition
Because most general aviation airports were built or improved with federal money, they operate under grant assurances, which are binding commitments the airport sponsor made to the FAA in exchange for funding. Two of these directly shape how FBOs operate.
Prohibition on Exclusive Rights
Federal law prohibits any person from holding an exclusive right to use an air navigation facility on which government money has been spent.6GovInfo. 49 USC 40103 – Sovereignty and Use of Airspace In practice, an airport sponsor cannot hand a single FBO a monopoly on fuel sales or ground handling and block competitors from entering the market. If a qualified operator shows up willing to invest in facilities and serve the public, the airport generally must negotiate in good faith to accommodate them.
A narrow exception exists. A single FBO may be the only provider if adding a second would be unreasonably costly or impractical, and doing so would require taking back space already leased to the existing operator. But the airport cannot manufacture that situation by leasing all available space to its preferred tenant. Federal rules limit how much ramp an FBO can control to what it can show an immediate need for.7Federal Aviation Administration. Airport Compliance Manual Chapter 8: Exclusive Rights
Enforcement has teeth. The FAA can withhold Airport Improvement Program grants until an exclusive right is removed, and in severe cases it can seek reversion of the airport property itself.7Federal Aviation Administration. Airport Compliance Manual Chapter 8: Exclusive Rights
Non-Discrimination Requirements
Grant Assurance 22 requires the airport to make its facilities available to the public on reasonable terms and without unjust discrimination. This flows down to FBOs. The airport must charge similarly situated operators comparable rents and fees, and it cannot grant preferential treatment to local residents over nonresidents for hangar assignments or other services.1Federal Aviation Administration. Airport Compliance Manual – Chapter 9: Unjust Discrimination between Aeronautical Users When a conflict arises between an FBO’s lease terms and the airport’s federal obligations, the federal obligations win, and leases are supposed to include a subordination clause making that explicit.
Minimum Standards and Lease Structure
Airport sponsors set minimum standards that define the baseline any business must meet before providing aeronautical services on the field. The FAA offers a framework in Advisory Circular 150/5190-7, though each airport tailors its own version to local conditions.8Federal Aviation Administration. FAA Order 5190.6C – Airport Compliance Manual Chapter 10 Typical requirements cover staffing levels, hours of operation, equipment inventories, and insurance minimums. Liability coverage requirements often run into the millions of dollars, covering hangar-keeper liability, ground-handling damage, and related exposures.
FBO leases on public airports typically run 30 to 35 years, long enough for the operator to finance and recoup its investment in buildings and infrastructure.9Federal Aviation Administration. Airport Compliance Manual Chapter 12: Review of Aeronautical Lease Agreements The FAA considers lease terms beyond 50 years potentially problematic, because they may exceed the useful life of the structures and effectively amount to a disposal of public property.
Nearly all FBO ground leases include a reversionary clause. When the lease expires, ownership of any buildings or improvements the FBO constructed on airport land transfers to the airport sponsor. The FAA expects this outcome and considers a 30-year term generally sufficient for the tenant to recover its capital investment. These clauses are not considered a government taking because the FBO agreed to the terms voluntarily as part of its lease negotiation. Leases longer than five years must also include provisions for periodic rent adjustments, preventing a tenant from locking in below-market rates for decades.9Federal Aviation Administration. Airport Compliance Manual Chapter 12: Review of Aeronautical Lease Agreements
Environmental Compliance for Fuel Storage
An FBO’s fuel farm, the cluster of aboveground tanks, piping, and truck-loading facilities that feeds its fueling operation, creates significant environmental exposure. Any facility storing more than 1,320 gallons of oil products in aboveground containers (counting only containers of 55 gallons or more) must prepare and implement a Spill Prevention, Control, and Countermeasure plan under federal regulations.10eCFR. 40 CFR Part 112 – Oil Pollution Prevention Most FBOs clear that threshold easily. A single fuel truck can hold several thousand gallons.
The SPCC plan must be certified by a licensed professional engineer and address secondary containment (berms, dikes, or drip pans around every tank), regular inspection schedules, personnel training at least annually, and security measures to prevent unauthorized access to fuel-handling equipment.10eCFR. 40 CFR Part 112 – Oil Pollution Prevention Inspection records must be kept on site for three years. A spill that reaches a waterway triggers federal reporting obligations and potential cleanup liability that can dwarf the cost of compliance. Environmental pollution liability insurance has become a near-standard requirement for FBO operations, covering cleanup costs, third-party property damage, and bodily injury claims from fuel releases or legacy contamination.