How class ratings affect your
aviation insurance

If you're a pilot or an aviation facility operator, you've likely noticed that insurance rates can vary widely — sometimes significantly — between similar-looking operations. One major reason is class ratings: a system insurers use to categorize aviation structures, activities, and equipment based on their risk profiles.

Understanding how class ratings work gives you a clearer picture of why your premium is what it is — and what you can do to influence it.

What are aviation property class ratings?

Class ratings act as organizational categories for aviation structures and facilities — hangars, fuel storage, runways, terminals, maintenance shops — grouped by their inherent risk level. By categorizing similar risks together, insurers can assess exposure more accurately and price policies more consistently.

Common aviation property class categories

While specific classifications vary by carrier, the following categories are used across most aviation property underwriting:

Hangars

• Private hangars
• Commercial hangars
• Maintenance hangars
• Paint hangars (higher risk — flammable materials)

Fuel storage facilities

• Above-ground and underground fuel tanks
• Refueling stations and fuel distribution systems
• Fuel trucks and mobile fueling equipment

Runways and taxiways

• Paved runways
• Grass and dirt runways (different risk profile than paved)
• Helipads

Aircraft maintenance facilities

• General repair shops
• Avionics shops
• Engine overhaul facilities

Flight schools and training centers

• Full pilot training facilities
• Simulator-only centers
• Training aircraft operations

Fixed base operators (FBOs)

• Small single-service FBOs
• Large full-service FBOs with fueling, maintenance, and charter

Other categories

• Terminal buildings (private and commercial)
• Control towers (permanent and mobile)
• Drone (UAS) infrastructure — hangars and launch/recovery sites
• Agricultural aviation bases
• Aerospace manufacturing plants
• Cargo handling and cold storage facilities
• Airport perimeter security and fire suppression systems

How class ratings influence your premium

Insurers analyze claims history across each class. A class associated with higher loss frequency or severity — like paint hangars that handle flammable materials — will carry higher baseline premiums than a low-activity private storage hangar.

Beyond the baseline rate, several individual factors can move your premium up or down within your class:

• Safety features: Fire suppression systems, security measures, and modern construction can improve your rating within a class
• Claims history: A clean record works in your favor during underwriting
• Aircraft type: The aircraft you're insuring alongside your facility affects the overall risk picture
• Operational scope: A small FBO offering only fuel has different exposure than one offering full maintenance and charter services

Where a broker makes a difference

Class ratings set a baseline, but individual underwriting factors give brokers room to negotiate. An experienced aviation insurance broker can:

• Shop your risk across multiple carriers to find the most favorable class assignment
• Document safety features and operational details that support a better rate
• Identify carriers that specialize in your specific class and understand its nuances
• Help you understand what investments — like adding fire suppression to a hangar — could meaningfully reduce your premium over time

The key takeaway

Class ratings are how insurers create consistency in a complex market. For pilots and facility operators, understanding the system helps you see why your premium is what it is — and what levers you have to influence it. The right broker doesn't just accept the baseline. They work to get you the best possible position within your class.