A

Access Window

The guaranteed notice period required to book a flight (often 8–24 hours) during which
a provider commits to supplying an aircraft.

Aircraft Category

A classification of aircraft based on size, range, and cabin type (e.g., light, midsize, super-midsize, largecabin).

Amortization

The spreading of an upfront cost (such as a share purchase) over time to evaluate annualized cost.

b

Block Hours

Pre-allocated flight hours associated with a share size or access program.

c

Capital Commitment

The upfront investment required to purchase a fractional share.

Charter

Trip-by-trip private aircraft booking without ownership or long-term commitment.

Contract Term

The length of time an owner is obligated to a fractional ownership agreement.

d

Depreciation

The reduction in aircraft value over time due to age, usage, and market conditions.

e

Equity Fractional Ownership

A fractional program in which owners hold a partial equity interest in an aircraft.

Escalation Clause

A contract provision allowing costs to increase over time due to fuel prices, labor, or inflation.

Exit Terms

Rules governing how and when an owner can leave a fractional program and recover capital.

f

Fleet Access

The ability to fly multiple aircraft within a managed fleet rather than a single tail number.

Fleet Interchange

The practice of substituting aircraft of the same category to ensure availability.

g

Guaranteed Availability

A contractual promise to provide an aircraft when booked within the defined access window.

h

Hourly Operating Cost

The variable cost charged per flight hour, typically covering fuel and maintenance reserves.

l

Large-Cabin Jet

A long-range aircraft with a stand-up cabin, often used for international travel.

Lease (Aircraft Leasing)

An arrangement providing access to an aircraft without purchasing it outright.

m

Management Fee

A fixed monthly charge covering crew, maintenance oversight, insurance, and administration.

Managed-Fleet Program

A fractional structure emphasizing access to a fleet rather than ownership of a specific aircraft.

0

Occupied Hour

A billable flight hour during which passengers are onboard.

p

Peak Days

High-demand travel dates (e.g., holidays) that may have special access rules or pricing.

Pricing Transparency

The clarity with which all costs and potential fees are disclosed.

r

Resale Formula

A contract-defined method for calculating the value of a fractional share at exit.

s

Share Size

The percentage of an aircraft owned (e.g., 1/16, 1/8, 1/4), determining annual flight hours.

Super-Midsize Jet

An aircraft category offering longer range and larger cabins than midsize jets.

t

Tail Number

The registration identifier of a specific aircraft.

Term Length

Another term for contract duration.

u

Utilization

The number of flight hours an owner actually flies in a year

w

Whole Aircraft Ownership

Owning 100% of an aircraft and assuming full operational and financial responsibility.
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Explore Related Resource

For deeper explanations, explore:

Fractional ownership costs and pricing

Fractional ownership risks and downsides

Fractional ownership options and structures

Fractional vs other private aviation models

Editorial Disclosure

This glossary is provided for educational purposes to clarify terminology used in fractional jet ownership.
Definitions may vary slightly by provider or jurisdiction.