Company lists · Data refreshed September 2026

Top 25 Aircraft certification consulting companies based in the United States

Name: Aircraft certification consulting companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 497 companies tracked

RevenueBase identified 497 aircraft certification consulting companies headquartered in the United States as of September 2026 and tracks 5,792 professional contacts across them, including 1,648 with verified work emails. Miami is the largest hub.

This list covers aircraft certification consulting companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

497Companies

5,792Contacts tracked

1,648Verified emails

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The 25 largest aircraft certification consulting companies based in the United States

Ranked by team size

Top 25 of 497 aircraft certification consulting companies based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to aircraft certification consulting companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	PKL Services	Indirect evidence	Poway, CA, United StatesHQ checked Sep 19, 2026	201-500	390 contacts →
	Indirect evidence “Headquartered in Poway, CA, PKL Services, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
2	Cdg, A Boeing Company	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	307 contacts →
	Indirect evidence “What We Do Engineering Services: We provide Boeing and OEMs expertise through the entire engineering lifecycle: from initial design, to aftermarket engineering changes, and…” Source: RevenueBase Database · checked Sep 19, 2026
3	Robbins-Gioia, LLC	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 19, 2026	51-200	303 contacts →
	Indirect evidence “Optimize and modernize depot planning and scheduling to improve utilization, throughput and readiness now and in the future.#FutureReadinessToday” Source: RevenueBase Database · checked Sep 19, 2026
4	Pemco Conversions	Partial evidence	Tampa, FL, United StatesHQ checked Sep 19, 2026	501-1,000	193 contacts →
	Partial evidence “PEMCO Conversions, an Airborne Maintenance and Engineering Services company, has developed over 70 STCs and modified over 350 aircraft and with conversion partnerships in China…” Source: RevenueBase Database · checked Sep 19, 2026
5	Aviation Training Consulting	Partial evidence	Altus, OK, United StatesHQ checked Sep 19, 2026	51-200	179 contacts →
	Partial evidence “At Aviation Training Consulting, we know that trust is earned, not given.” Source: RevenueBase Database · checked Sep 19, 2026
6	Encore Interiors	Strong evidence	Huntington Beach, CA, United StatesHQ checked Sep 19, 2026	501-1,000	160 contacts →
	Strong evidence “EnCore is a full floor-to-floor design, manufacturing, and certification company, offering just about anything that passengers see on the interior of an aircraft- from galleys…” Source: RevenueBase Database · checked Sep 19, 2026
7	Xtreme Aviation LLC	Indirect evidence	Opa-locka, FL, United StatesHQ checked Sep 19, 2026	51-200	134 contacts →
	Indirect evidence “Founded in 2013, Xtreme Aviation began as a field service and AOG rescue team.” Source: RevenueBase Database · checked Sep 19, 2026
8	Professional Aircraft Accessories	Partial evidence	Titusville, FL, United StatesHQ checked Sep 19, 2026	51-200	114 contacts →
	Partial evidence “Located in Titusville, Fla, Professional Aircraft Accessories, a Greenwich AeroGroup Company, offers a variety of services including component repair and overhaul services on…” Source: RevenueBase Database · checked Sep 19, 2026
9	CEF Industries	Indirect evidence	Addison, IL, United StatesHQ checked Sep 19, 2026	51-200	114 contacts →
	Indirect evidence “CEF Industries is an Aerospace qualified full service manufacturing company including marketing/sales, customer service, design engineering, assembly, test and customer support.” Source: RevenueBase Database · checked Sep 19, 2026
10	Aery Aviation, LLC	Strong evidence	Newport News, VA, United StatesHQ checked Sep 19, 2026	51-200	89 contacts →
	Strong evidence “Aery Aviation is an aircraft modification, engineering, certification, and maintenance company based in Newport News, Virginia.” Source: RevenueBase Database · checked Sep 19, 2026
11	Alton Aviation Consultancy	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	51-200	85 contacts →
	Partial evidence “Alton Aviation Consultancy has significant experience delivering large, complex consulting engagements for clients in aviation and aerospace.” Source: RevenueBase Database · checked Sep 19, 2026
12	Southeast Aerospace	Indirect evidence	Melbourne, FL, United StatesHQ checked Sep 19, 2026	51-200	82 contacts →
	Indirect evidence “Southeast Aerospace was created to provide higher level of service, products, and quality to the aviation industry.” Source: RevenueBase Database · checked Sep 19, 2026
13	L2 Aviation	Strong evidence	Dripping Springs, TX, United StatesHQ checked Sep 19, 2026	51-200	80 contacts →
	Strong evidence “L2 Aviation is a global avionics design, engineering, consulting, certification, and installation services company supporting a variety of modification and certification projects…” Source: RevenueBase Database · checked Sep 19, 2026
14	Adci Airport Design Consultants, INC	Indirect evidence	Baltimore/washington Dc, United StatesHQ checked Sep 19, 2026	51-200	77 contacts →
	Indirect evidence “Airport Design Consultants, Inc.(ADCI) provides responsive, high-quality Airport planning, design, and construction management/inspection services to its Aviation Industry clients.” Source: RevenueBase Database · checked Sep 19, 2026
15	Knight Aerospace	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 19, 2026	51-200	74 contacts →
	Indirect evidence “Knight Aerospace, located in San Antonio, Texas, is a design, manufacturing, and modification center dedicated to providing competitive and functional products and reliable…” Source: RevenueBase Database · checked Sep 19, 2026
16	Tes-I	Indirect evidence	Tucson, AZ, United StatesHQ checked Sep 19, 2026	51-200	73 contacts →
	Indirect evidence “TES-i is an agile full-service engineering firm providing in-house concept, requirements, design, development, prototyping, manufacturing, testing, validation, verification, and…” Source: RevenueBase Database · checked Sep 19, 2026
17	Ultra Aviation Services, INC	Partial evidence	Glen Burnie, MD, United StatesHQ checked Sep 19, 2026	n/a	73 contacts →
	Partial evidence “Ultra Aviation is a full-service aviation-consulting firm specializing in buying, selling and marketing new and previously owned high performance piston single and twin-engine…” Source: RevenueBase Database · checked Sep 19, 2026
18	RE Build Answer Engineering	Partial evidence	Englewood, CO, United StatesHQ checked Sep 19, 2026	11-50	71 contacts →
	Partial evidence “Answer Engineering is an aviation & aerospace engineering consulting firm.” Source: RevenueBase Database · checked Sep 19, 2026
19	BYE Aerospace, INC	Indirect evidence	Englewood, CO, United StatesHQ checked Sep 19, 2026	11-50	66 contacts →
	Indirect evidence “Innovation for the Next Generation of Aerospace" Bye Aerospace, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
20	Phoenix Composite Solutions, LLC	Partial evidence	Oscoda, MI, United StatesHQ checked Sep 19, 2026	51-200	60 contacts →
	Partial evidence “Phoenix Composite Solutions, LLC is an FAA certified aircraft repair and overhaul facility located on the former Wurtsmith Air Force Base In Oscoda, Michigan.” Source: RevenueBase Database · checked Sep 19, 2026
21	Guardian JET	Partial evidence	Guilford, CT, United StatesHQ checked Sep 19, 2026	11-50	58 contacts →
	Partial evidence “Aviation sales company specializing in consulting, brokerage & acquisitions.” Source: RevenueBase Database · checked Sep 19, 2026
22	TLG Aerospace	Partial evidence	Seattle, WA, United StatesHQ checked Sep 19, 2026	51-200	57 contacts →
	Partial evidence “TLG Aerospace, LLC (TLG) is an aerospace engineering services company dedicated to providing customers with reliable, efficient design, analysis, and certification for new and…” Source: RevenueBase Database · checked Sep 19, 2026
23	MBA Aviation	Strong evidence	Arlington, United StatesHQ checked Sep 19, 2026	11-50	53 contacts →
	Strong evidence “mba, established in 1992, is an international aviation consulting firm based in Washington D.C, specializing in the analysis of commercial jet transport aircraft and the…” Source: RevenueBase Database · checked Sep 19, 2026
24	Human Solutions Inc., A Division Of Oasis	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1,001-5,000	53 contacts →
	Partial evidence “Human Solutions Inc, a Division of Oasis Systems LLC, is a leading technical services company providing full life-cycle strategic consulting in systems engineering, enterprise…” Source: RevenueBase Database · checked Sep 19, 2026
25	STS Engineering Solutions	Indirect evidence	Jensen Beach, FL, United StatesHQ checked Sep 19, 2026	11-50	51 contacts →
	Indirect evidence “From brilliant minds comes innovation, and this is where the STS Engineering Solutions team excels.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: aircraft certification consulting companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names aircraft certification consulting companies.
Partial evidence: Its own public description names part of aircraft certification consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name aircraft certification consulting companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 497 aircraft certification consulting companies based in the United States

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Aircraft certification consulting companies based in the United States at a glance

As of Sep 19, 2026

28.5%Verified-email coverage

11.7Average contacts per company

1-10Median size (employees)

4.2%Largest-city concentration · Miami

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

318

11-50

124

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 497 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among aircraft certification consulting companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “aircraft certification consulting companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names aircraft certification consulting companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among aircraft certification consulting companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,648 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names aircraft certification consulting companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many aircraft certification consulting companies are there based in the United States?

RevenueBase identified 497 aircraft certification consulting companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

PKL Services, headquartered in Poway, tops this list with the largest team on record.

Which city has the most aircraft certification consulting companies?

Miami leads with 21 headquartered companies, followed by Wichita (14) and Los Angeles (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,648 verified decision-maker contacts tracked across these 497 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.