From Submission
to Approval
Liberty Partners has supported 50+ STC programs and holds T-PED STCs for Part 23, 25, 27, and 29 aircraft — our T-PED program dates to 2012. From certification plans and data packages to conformity inspections and major alteration approvals, our certification team works alongside engineering and manufacturing in-house — eliminating the handoffs that stall most programs.
Core Certification Services
Complete FAA approval paths for the aircraft modifications and parts you bring to market. Whether your team ends up as the STC holder or Liberty Partners retains the certification, we handle the regulatory process end-to-end.
Supplemental Type Certificates (STC)
Complete STC development and management — from certification plan and compliance documentation through final FAA approval. Most STCs we develop transfer to the customer as holder; we also hold our own, including our flagship T-PED portfolio.
FAA Parts Manufacturer Approval (PMA)
PMA application support, test plans, and approval guidance. Liberty Partners holds its own PMA and can navigate the process for your parts program.
Major Alterations & Repairs
Certification data packages for complex structural and systems changes that exceed the scope of minor alterations and require formal FAA approval.
Instructions for Continued Airworthiness (ICA)
ICA documentation defining the inspection, maintenance, and repair procedures required to keep modified aircraft airworthy after certification.
International Validation Support
Validations completed with EASA (European Union), TCCA (Canada), and ANAC (Brazil). Additional international coordination available through the FAA's bilateral agreements with foreign airworthiness authorities.
Compliance & Documentation
The audit-ready documentation that separates a clean approval from a stalled one. Certification plans, conformity inspections, test witnessing, and complete data packages that satisfy regulators and protect your schedule.
Certification Plans
Complete certification plans mapping compliance findings, methods, and deliverables against applicable regulations — setting schedule, scope, and evidence requirements for your program.
Conformity Inspections
Formal conformity inspections verifying that parts, installations, and test articles match approved type design data and certification plans.
Test Witnessing
Coordination and witnessing of certification tests to generate regulation approved data for STC, PMA, and major alteration programs.
Certification Data Packages
Complete, audit-ready packages covering certification plans, compliance documentation, test reports, drawings, and conformity statements.
Program Highlights
A cross-section of the work our certification team has delivered — from head-of-state completions to PMA production programs to industry-first connectivity STCs.
Head-of-State & Government VIP Programs
Engineering and certification support for head-of-state VIP completions and government aviation programs — among the most demanding work in the industry for security, documentation, and quality standards.
General Aviation OEM PMA Program
Designed and manufactured precision actuator components for a leading general aviation OEM under our FAA Parts Manufacturer Approval — an end-to-end example of engineering, production, and certification integrated under one roof.
Air-to-Ground Connectivity STCs
Developed four FAA STCs for a next-generation air-to-ground connectivity system, including installations on the Cessna Citation X. Delivered engineering, certification data, parts fabrication, test execution, and certified installation kits.
T-PED Certification
Liberty Partners has run a dedicated T-PED certification program since 2012, with STCs certifying that aircraft critical systems are tolerant of Wi-Fi and Transmitting Portable Electronic Device (T-PED) interference. Our T-PED portfolio covers Part 23, 25, 27, and 29 aircraft — four STCs spanning every airplane and rotorcraft category — with 3,000+ aircraft certified and counting.
Why Choose Liberty Partners Certification
50+ STC Programs Supported
Two decades of engineering, certifying, and supporting FAA approvals across VIP modifications, connectivity systems, and special-mission aircraft — facilitating thousands of modified aircraft worldwide.
Proven with Industry Leaders
Trusted certification partner for head-of-state and government VIP programs, general aviation OEM PMA components, and next-generation air-to-ground connectivity STCs.
End-to-End Under One Roof
Certification works shoulder-to-shoulder with engineering and manufacturing — so compliance is designed and built in, not bolted on.
Related Services
Engineering
Certification-ready engineering from the first sketch. Structural, electrical, avionics, and 3D modeling — all designed for approval from day one.
Manufacturing
FAA-PMA and AS9100D-certified manufacturing. Precision machining, fabrication, composites, and finishing — with the quality documentation your program requires.
T-PED Certification
Four T-PED STCs covering Part 23, 25, 27, and 29 — our T-PED certification program has run since 2012, certifying aircraft critical systems tolerant of Wi-Fi and PED interference.
Need Certification Support?
Whether you're bringing an existing design for STC support, planning a PMA program, or need ICA documentation for a completed modification, our certification team will scope the path, the schedule, and the documentation required.