A twin-engine airliner on approach through a mist-filled canyon, a waterfall falling behind it
Aeronautical Valuation

The Academic Authority on Aeronautical Valuation

Academic Research. Financial Rigor. Aviation Expertise.

Evidence-based valuation and advisory across aviation businesses, aircraft, and airport real estate.

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Dr. Clay W. Carter, DBA, CFA, FRM, founder of Valuation Takes Flight LLC
Dr. Clay W. Carter
DBA · CFA · FRM · CAIA · CIPM
Member · CFA Institute · GARP · CAIA Association
What We Do

Seven Specialized Advisory Services

Each engagement pairs doctoral real estate research with aviation-specific expertise, delivered for the people who underwrite, litigate, and invest in aviation businesses and real estate.

View detailed service pages →

01

Aircraft Hangar Appraisal

Independent appraisals of aircraft hangars and airport improvements, grounded in doctoral research and the reference textbook on the subject. Hangars look like industrial warehouses but trade on different fundamentals: aircraft capacity, airport ground leases, FAA grant assurances, and the years remaining before improvements revert to the airport.

USPAP-InformedGround LeaseReversionLeasehold
02

Hangar Property Tax Appeals

County assessors routinely value hangars from generic commercial cost tables, ignoring ground lease term, reversion, functional obsolescence, and airport use restrictions. We prepare the independent appraisal that anchors an appeal, rebut the assessor's methodology, and provide testimony if the matter escalates.

Assessment AppealCost Table RebuttalCounty Board
03

Airport Hangar Rent Studies

Fair market rent studies for airport hangars and ground leases. We set supportable rental rates using comparable lease evidence and a rate of return on underlying land value, the analysis airport sponsors and tenants rely on for rent resets, lease renewals, through the fence agreements, and FAA rate and rental structure compliance.

Fair Market RentGround LeaseRate of ReturnRent Resets
04

Aviation Business & FBO Valuation

Business valuations for privately held aviation companies: FBO, MRO, charter, parts, and flight training operators. For fixed base operators the analysis separates the business enterprise from the underlying leasehold, pricing fuel volumes and margins, hangar and ramp revenue, and the operating agreement with the airport sponsor.

FBOMROCharterEBITDA Multiple
05

ESOP Valuations for Aviation Companies

Opinions of value for employee stock ownership plans at aviation companies, including the annual updates an ESOP trustee requires. An ESOP valuation must hold up to Department of Labor scrutiny of adequate consideration, and aviation operators carry value drivers a generalist appraiser rarely prices.

ESOPAdequate ConsiderationAnnual Update
06

Expert Witness & Litigation Support

Retained testifying and consulting expert work in hangar and airport valuation disputes: condemnation and eminent domain, ground lease termination, property tax litigation, insurance coverage, and ownership disputes. We serve attorneys on both sides of the docket, nationwide.

QualifiedCondemnationEminent DomainRebuttal
07

Performance Verification & GIPS Advisory

Independent reviews of a fund's reported returns that account for the structural biases unique to hangar portfolios: appraisal smoothing, IRR manipulation, lease-term amortization distortion, and GP-LP information asymmetry. We serve LPs, GPs preparing for institutional raises, and pension funds.

GIPS ComplianceIRR VerificationLP Due Diligence

A Hangar Is Not a Warehouse

Three conditions separate an aircraft hangar from the industrial building it resembles. Each one moves value in a direction a generalist appraisal will not capture, and each one is where our work concentrates.

Free Tools & Resources

Tools You Can Use Right Now

Source-grounded calculators, maps, directories, and trackers for anyone who owns, buys, finances, or litigates an aircraft hangar or airport property.

Quarterly Benchmark

GA Hangar Rent Index

The first quarterly market-rent benchmark for US general aviation hangar storage. The Index closes the gap that has frustrated every appraiser, airport sponsor, and FBO acquirer working in this niche: until now there was no independent benchmark for what hangar space actually rents for.

Open the GA Hangar Rent Index

GA Hangar Rent Index
The Only Indexes of Their Kind

Aviation Business Value Benchmarks

Most aviation market data tracks aircraft. Our indexes track the companies that maintain, fly, and service them, built entirely from public data and published each quarter. The read is reported by segment, so it applies whether you run an MRO, an FBO, a parts business, or a flight school.

PABVI · Private Aviation Business Value Index
Firming
▲ Values holding across all four segments
Mechanic Scarcity Index
Tightening
▲ Supply falling behind maintenance demand

The story this quarter is the maintenance crunch. Nearly 74% of the pre-owned business-jet fleet for sale is now 16 years or older, up from 70% a year earlier, and the certificated mechanic workforce is aging toward retirement. The scarcity index is elevated, which is durable pricing power for MRO and repair-station owners.

MRO / Repair StationsScarcity is lifting margins and multiples.
FBO / CharterValues steady as flight activity normalizes.
Parts / AvionicsAftermarket demand keeps multiples firm.
Flight TrainingPilot demand supports asset-light valuations.
Curious what your business would be worth today?
Complimentary valuation snapshot for your segment. No obligation.

Valuing Aircraft Hangars: A Textbook for Real Estate Appraisers by Dr. Clay W. Carter
The Textbook

The Definitive Professional Guide

The definitive academic reference for aircraft hangar valuation, covering the federal regulatory framework, airport ground lease structures, and the cost, income, and sales-comparison approaches adapted for aviation-specific conditions. Dedicated treatment of PFAS contamination, USPAP-compliant reporting, Standard 3 review, and specialty properties including T-hangars, FBOs, MRO facilities, vertiports, and sustainable aviation fuel infrastructure.

Grounded in aeronautical expertise, doctoral real estate research, and a credential depth unmatched in the field. Required reading for aviation lenders, appraisers, airport authorities, and institutional investors entering the hangar market.

View on AmazonRead the Underlying Research
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About Dr. Carter

The Scholar Behind the Practice

Dr. Clay W. Carter holds the DBA, MBA, MS, CFA, FRM, CAIA, and CIPM designations. He serves as Assistant Professor at an aeronautical university in Daytona Beach, Florida, where his research focuses on hangar valuations. He has authored a textbook on the subject along with several other aviation-related books.

As founder of Valuation Takes Flight LLC, he applies this research to consulting services for aviation lenders, airport authorities, private equity funds, and litigation attorneys who need rigorous analytical support alongside traditional appraisal work.

Rigorous analytical support for the people who underwrite, litigate, and invest in aviation real estate.
Begin an Engagement
Regulatory Capability

The FAA Rules Behind Every Rent and Every Value

Twenty federal authorities decide what an airport may charge and what a hangar is worth, and most of them are not in the Code of Federal Regulations. We mapped each one to the problem it creates and the engagement that answers it.

Explore the 20 Authorities
Two airliners on final approach in a clear sky, one sequenced behind the other
Begin an Engagement

Ready to Work Together?

Reach out to discuss litigation support, a ground lease analysis, or institutional performance verification.

Also by Dr. Carter

Other Aviation Works

Additional books exploring aviation economics, markets, and investment history.

Cover of Open Skies, Open Markets: How South America's Mid-Size Cities Can Win the US Consumer by Clay W. Carter

Open Skies, Open Markets

How South America's Mid-Size Cities Can Win the US Consumer
View on Amazon
Cover of Capital Takes Flight: Early Investors in Aviation by Clay W. Carter

Capital Takes Flight

Early Investors in Aviation
View on Amazon