Overhaul Support Services

FAA and EASA certificated repair station specializing in overhauling critical helicopter components

Aerospace & Defense




New Applications

Overhaul Support Services (OSS) is an AS9100 and AS9110 certificated aerospace MRO facility as well as a FAA and EASA certificated repair station specializing in overhauling critical helicopter components. Overhaul Support Services was established in 2000 and acquired by our parent company TIGHITCO in 2008. Our primary focus is to support our valued customer base with creative thinking while driving viable solutions.


We provide MRO support using experienced aerospace technicians as well as a strong supply chain capable of performing industry standard specialized processes, such as shot peening, plating, adhesive bonding, and grinding.  This supply chain support along with our internal capabilities provide the maximum flexibility necessary to ensure the repairs are done correctly and quickly to get your fixed wing and rotor wing component back on the aircraft and in the air.

Our state-of-the-art facility and equipment include parts cleaning, plastic media blasting, vapor blasting, NADCAP certified FPI & MPI (NDT), borescope inspection capabilities, CMM inspection, CNC machines, and hydraulic testing. An added asset for this facility is the longevity of the team members – average 10 years – which results in higher consistency and fewer returns. Along with our friendly and knowledgeable office support, you can count on our team to do everything we can to get you back in the air as quickly as possible.

Quality Policy

Operational excellence in meeting customer requirements

Superior Quality

Sustained lean culture

All propelling us to World Class Performance

A Phased Approach to Repairs

Disassembly, Clean & Inspect

Repair & Overhaul

Final Assembly & Test

OSS continues to enhance our extensive list of capabilities to meet our customers’ needs, offering them the convenience of a one stop shop while maintaining the highest standards of safety, reliability, and excellence. Whether you need scheduled or unscheduled maintenance, upgrades, or refurbishment we will exceed your expectations.
Rotor Blades at the Ready

Our commercial and military customers trust us to deliver new, repaired, and overhauled rotor blades. We specialize in complete overhaul of your main and tail rotor blades. We take pride in our work and it shows in the finished product. Our body work and paint restore your blade to a like new condition and will hold up against our competition in all types of conditions.  Localizing repairs to address only the damaged area, drastically cuts down on repair costs, while at the same time maintaining the appropriate level of safety.

Internal Capabilities


Vapor Blast

Boroscope Inspection

Thread Guage Inspection




Blending & Etching


Hydraulic Testing

Sheet Metal Repair



We offer state of the art inspection procedures, using several non-destructive techniques, including but not limited to:


  • Ultrasonic Test
  • Radiography (X-ray)
  • Liquid Fluorescent Penetrant
  • Eddy Current
  • Magnetic Particle
  • Borescope/Visual inspections
Non-Destructive Inspection (NDI)
The inspection of a structure or component in any manner that will not impair its future usefulness. The purpose of the inspection may be to detect flaws, measure geometric characteristics, determine material structure or composition, or it may characterize physical, electrical, or thermal properties without causing any changes in the part.
Non-Destructive Testing
An inspection tool used to determine the structural integrity of a part or assembly without structurally altering it.
Magnetic Particle Inspection - MPI
MPI is completed by inducing a magnetic field in a ferromagnetic material and covering the excited part with iron particles. The particles may be dry or suspended in a fluid. Defects in the surface like voids and cracks cause disruptions in the magnetic field lines of the part, and force the iron particles to concentrate at the indications due to magnetic flux leakage. MPI makes it easy to see cracks and other defects in the surface of a part that would normally be too small to see by eye alone. Common indications found with MPI include cracks, pits, voids, and sometimes even indications below the surface.
Fluorescent Penetrant Inspection – FPI
FPI is one of the oldest methods of finding indications in parts which are not visible by eye. This method utilizes a fluorescent or vividly colored dye that glows brightly when exposed to UV light. To complete this method, a part is coated with the fluorescent dye and then wiped clean. A developer, a liquid which activates the color or fluorescence, is then applied to the surface. When brightly lit or lit with a UV lamp, excess dye will remain in cracks and voids on the surface, making many types of indications easy to see by eye.
Borescope Inspection
A borescope is an optical instrument designed to assist visual inspection of narrow, difficult-to-reach positions, consisting of a rigid or flexible tube with an eyepiece or display on one end, an objective lens or camera on the other, linked together by an optical or electrical system in between. The optical system in some instances is accompanied by (typically fiberoptic) illumination to enhance brightness and contrast. An internal image of the illuminated object is formed by the objective lens and magnified by the eyepiece which presents it to the viewer’s eye.
Thread Gauge Inspection
A thread pitch gauge is a visual checking device to identify the pitch of a threaded part and it is not a typical metrology/inspection device. The goal of inspecting (or measuring) a thread is making sure that the thread is cut at the right depth and that the pitch diameter matches the design specifications. Our standards add confidence and integrity to the inspection process and product.
Coordinate measuring machines (CMMs) play a vital part in precision engineering and quality control in the aerospace industry. A coordinate measuring machine, also known as a CMM, uses a probing system to detect discreet points on the surfaces of objects.

CMMs are integrated within quality assurance or quality control workflows to check the dimensions of components to prevent or resolve quality issues. The advantages of using CMMs over manual inspections or checks performed with conventional metrology instruments, such as micrometers and height gauges, are: accuracy, speed and the reduction of human error.

Special Processes

Vapor Blasting
Vapor blasting is the combination of mixing water with abrasive which forms a slurry. This slurry is mixed into a fluid and evenly mixed as a liquid in the bottom of the hopper. The liquid is pumped up to the blasting gun and compressed air accelerate the mixture propelling it towards the part. Vapor abrasive blasting has many advantages in that it is a chemical free process making it environmentally friendly.

Advantage of Vapor Blasting:

  • Instead of cleaning by impact, it cleans with water
  • It both degreases and blasts at the same time
  • The water acts as a lubricant or a barrier between the media and the component
  • During the blasting process, no media is infused into the material
  • Leaves an appealing satin finish on many surfaces, such as aluminum, brass, and stainless steel

Centers of Excellence

East Granby, CT

  • Aqueous Cleaning
  • Plastic Media Blast Stripping
  • NDT Component Inspection
  • Component Assembly
  • Rotor Blade Repair
  • Titanium/Composite Spart Salvage
  • Cleaning and Paint stripping
  • Heater Mat Removal and Repair
  • Composite Repair
  • Overhaul and Repair of Fixed Wing and Rotorcraft Components
  • Rapid Turn Time Capability
  • Tool Development & Design for Manufacturing
  • Sheet Metal Fabrication and Repairs
  • CNC 4-Axis Milling
  • CNC Turning
  • CNC Boring Capability
  • Resistance and Spot Welding
  • CMM Inspection
  • Boroscope Capability (down to .6mm diameter)
  • Ground Support Equipment Service and Repair

Get your next project started with our team.
Contact us today for more information or to schedule a call.