FAA repair station certification is the regulatory foundation that separates a legally authorized overhaul facility from one that is not. When a helicopter component is removed from an aircraft for overhaul, repair, or inspection, it cannot return to airworthy service through just any shop. The Federal Aviation Administration is explicit on this point. Only facilities that hold the appropriate certification under 14 CFR Part 145 can legally perform maintenance and return aviation articles to service with an airworthiness approval.
For helicopter operators and procurement teams evaluating MRO suppliers, understanding what FAA repair station certification requires — and what it authorizes — is essential context for every sourcing decision. This article explains the Part 145 framework, the rating system, the FAA’s requirements, and why Rotair Aerospace Corporation’s FAA Repair Station Certificate #OHBR591K matters for the operators it supports.
What Is FAA Repair Station Certification?
An FAA Repair Station is a maintenance facility that holds an Air Agency Certificate issued under 14 CFR Part 145. The certificate authorizes the facility to perform maintenance, preventive maintenance, alterations, and inspections on aircraft and aircraft components. Crucially, it only covers the specific articles and functions for which the FAA has approved that facility.
There is an important distinction between a certificated repair station and an individual mechanic holding an Airframe and Powerplant (A&P) certificate. The repair station certificate belongs to the facility itself. The FAA reviews and approves the shop’s physical facilities, equipment, tooling, personnel qualifications, technical data holdings, and quality control procedures — not just individual technician credentials. As a result, when a certificated repair station releases a component with an FAA Form 8130-3 Airworthiness Approval Tag, that release carries the full weight of the facility’s certified quality system.
Furthermore, a repair station can only perform work within its specific rating. A facility without the appropriate rating for a particular component type cannot legally maintain that component and return it to airworthy service — regardless of how experienced its personnel are.
The Rating and Class System Under Part 145
The Part 145 rating system defines exactly what a certificated repair station may do. There are six general rating categories, each broken down into classes. Together, they determine the full scope of a facility’s authorized work.
Airframe Ratings (Classes 1–4)
These authorize maintenance on aircraft airframes. Classes range from simple fabric and wood construction through to large all-metal transport category aircraft and helicopters.
Powerplant Ratings (Classes 1–2)
These authorize overhaul and maintenance of reciprocating engines (Class 1) and turbine engines (Class 2).
Propeller, Radio, and Instrument Ratings
Propeller ratings (Classes 1–2) cover fixed-pitch and constant-speed propellers. Radio ratings (Classes 1–3) cover communication, navigation, and radar equipment. Instrument ratings (Classes 1–3) cover mechanical, electrical, and gyroscopic instruments.
Accessory Ratings (Classes 1–3)
This is the rating category most directly relevant to helicopter component MRO. Accessory ratings authorize maintenance on the following:
- Class 1 — Mechanical accessories: hydraulic components, pneumatic components, wheel brakes, landing gear, shock absorber struts, servo units, and mechanically driven pumps.
- Class 2 — Electrical accessories: generators, starters, electric motors, voltage regulators, and electrically driven components.
- Class 3 — Electronic accessories: avionics, flight control electronics, sensors, and electronic control units.
For helicopter MRO, a facility’s specific accessory class ratings — combined with the aircraft makes and models listed in its Operations Specifications — define exactly which components it can legally overhaul and return to service.
What the FAA Requires Before Issuing a Repair Station Certificate
FAA repair station certification is not a registration or a self-declaration. It requires a formal application, a comprehensive FAA review, and a physical inspection of the facility. Below are the key requirements a facility must satisfy.
Fixed Location and Adequate Facilities
The FAA requires a fixed physical address. The facility must provide adequate housing for the maintenance activities the station intends to perform. This includes appropriate environmental controls, lighting, ventilation, and contamination protection for the component types being worked.
Equipment, Tools, and Calibrated Test Equipment
Every tool and piece of test equipment required by the applicable maintenance manuals must be on hand, in working order, and — where calibration applies — current with traceable records. For avionics and hydraulic component overhaul, this includes specialized test benches, environmental chambers, and vibration platforms. In short, a repair station cannot claim to perform a function it lacks the equipment to execute.
Qualified Personnel
Technicians performing maintenance must hold valid A&P certificates. Inspectors must be separately qualified. Additionally, the station must maintain training records showing that every employee is current on the equipment and procedures they are authorized to use.
Current Technical Data
The station must hold current copies of every maintenance manual, service bulletin, airworthiness directive, and Component Maintenance Manual (CMM) applicable to the articles it services. For helicopter component overhaul, this means the relevant Sikorsky, Bell, or Boeing CMMs for every component type on the capability list. Moreover, those documents must stay current as revisions are issued.
Repair Station Manual and Quality Control Manual
Every Part 145 repair station must develop and operate under an approved Repair Station Manual (RSM) and Quality Control Manual (QCM). These documents define the facility’s procedures for performing, inspecting, and documenting all maintenance functions. The FAA reviews and approves both manuals before issuing the certificate.
Ongoing FAA Surveillance
FAA repair station certification is not a one-time achievement. The FAA conducts ongoing surveillance of certificated facilities. Any deficiency in facilities, equipment, personnel, or documentation can result in certificate suspension or amendment. This continuous oversight is what makes a Part 145 certificate a meaningful, ongoing quality assurance mechanism — not just an initial qualification.
The Significance of FAA Form 8130-3
One of the most tangible outputs of FAA repair station certification is the authority to issue FAA Form 8130-3 — the Authorized Release Certificate and Airworthiness Approval Tag. This document accompanies an overhauled or repaired component when it returns to airworthy service.
For any operator receiving an overhauled component, the 8130-3 is the legal basis for accepting that component for installation. Without a valid 8130-3 from a certificated repair station, a component cannot be legally installed on a civil-registered aircraft. The form documents the work performed, the maintenance data used, the identity of the releasing facility, and the certification that the article is airworthy.
For military components procured through DLA and other government channels, the 8130-3 is similarly required. As a result, FAA repair station certification is a prerequisite for any supplier seeking to support depot-level maintenance contracts.
How Rotair’s FAA Repair Station Certificate #OHBR591K Works in Practice
Rotair Aerospace Corporation holds FAA Repair Station Certificate #OHBR591K. Specifically, this certificate authorizes the overhaul and repair of mechanical and hydraulic accessories (Class 1) and electronic accessories (Class 3) for all makes and models of Sikorsky and Bell commercial and military helicopters. This scope directly covers the hydraulic components, avionics assemblies, and mechanical accessories that Rotair’s customers require for airworthy maintenance.
In practice, here is what this means for operators sourcing overhauled components from Rotair:
- Every overhauled component leaves with a legally issued FAA Form 8130-3 — the release document required for civil and government aircraft maintenance.
- All overhaul work follows documented, FAA-reviewed procedures contained in Rotair’s approved Repair Station Manual and Quality Control Manual.
- Rotair’s hydraulic test facility, environmental chamber, and vibration platform all operate under current calibration schedules — schedules that the FAA itself surveys.
- All technicians hold valid qualifications for the specific component types within the station’s rated scope, and training records are maintained accordingly.
- Rotair holds and maintains current CMMs for every Sikorsky and Bell component it overhauls — keeping technical data current as revisions are issued.
Rotair’s capabilities page details the full scope of its overhaul and manufacturing capabilities. The S-70/H-60 overhaul capability list provides specific component coverage for UH-60 Black Hawk operators.
The repair station certificate works alongside Rotair’s other quality credentials — FAA-PMA approval for over 3,500 part numbers and certification to AS9100 Rev D and ISO 9001:2015 — to provide a complete quality framework covering both new manufacture and overhaul.
FAQs: FAA Repair Station Certification
What is an FAA Repair Station certificate?
It is an Air Agency Certificate issued by the FAA under 14 CFR Part 145. It authorizes a facility to perform maintenance, overhaul, repair, and inspection on specific aircraft and aircraft components. Only facilities holding the appropriate rating for a given component type can legally return that component to airworthy service.
What is FAA Form 8130-3?
FAA Form 8130-3 is the Authorized Release Certificate and Airworthiness Approval Tag. A certificated repair station issues it when releasing a maintained or overhauled component back to service. It is the legal document required for installation of the component on a civil aircraft.
What is the difference between a Part 145 repair station and an A&P mechanic?
An A&P mechanic holds an individual certificate that authorizes personal maintenance work. A Part 145 repair station is a facility certificate. The FAA approves the facility’s equipment, procedures, personnel, and quality system — not just an individual’s credentials. Consequently, only the repair station can issue FAA Form 8130-3; an individual A&P mechanic cannot.
What does Rotair’s FAA Repair Station Certificate #OHBR591K cover?
Certificate #OHBR591K authorizes Rotair to overhaul and repair mechanical and hydraulic accessories (Class 1) and electronic accessories (Class 3) for all makes and models of Sikorsky and Bell commercial and military helicopters. This includes hydraulic servo-actuators, dampers, landing gear components, and avionics assemblies.
How do I verify a repair station’s certification?
The FAA maintains a searchable repair station database at faa.gov/aircraft/repair. Operators can look up any certificated repair station by name, certificate number, or location to confirm its current certification status and ratings.
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Work With a Certified Helicopter Component Overhaul Specialist
FAA repair station certification is the non-negotiable first credential to verify when sourcing overhauled helicopter components — before price, lead time, or any other consideration. Rotair Aerospace Corporation’s FAA Repair Station Certificate #OHBR591K, combined with AS9100 Rev D certification and over 3,500 FAA-PMA approvals, provides the complete regulatory and quality framework that military and commercial helicopter operators rely on.
To discuss your overhaul requirement, visit Rotair’s contact page or reach the team directly:
Phone: (203) 576-6545
Email: webinquiries@rotair.com
Address: 964 Crescent Avenue, Bridgeport, CT 06607
