Considered as the right way for development, Sun Aviation has been initially authorized in 2012 by the Romanian CAA as a NDT Lab with capabilities to perform tests (Visual – Borescope, Ultrasound, Eddy Current Magnetic Particle and Liquid Penetrant) releasing the Test Report at the end. Where applicable, the reports are accompanied by annexes with pictures and video of the findings.

 

SUN AVIATION NDT Lab is capable to provide state-of-the-art standards inspections.

We provide inspections for civil and utility aircraft (both fix and rotary wing).

 

Now, the client portfolio contains major local operators with renewed contracts and regular tasks. There are, also, clients on order or clients with few tasks. Regardless the client status, our specialized engineers provide the highest level service.

 

For the methods that we are authorized, our Lab is fully prepared to provide services at the client location (local or abroad).

 

Lab’s activity is monitorized and managed trough our Q-Manager software, which integrates the quality and commercial side of the jobs. The software is own designed and tailored specifically for the NDT lab needs (starting from the aviation standards, EASA requirements and specific NDT rules).

All inspections comply with FAA, EASA and manufacturers regulations and requiring standards ( ASTM E 1444, ASTM 215, ASTM 1316, ASTM E 164, ASTM E 587, ASTM E 1417, ASTM E 1219, EN 4179, QPL-AMS 3046, QPL-AMS-2644, NAS 410, EN17025, SR-EN-ISO 9001, RACR-NDT, RACR-LTS).

 

For the methods that we are authorized, our Lab is fully prepared to provide services at the client location (local or abroad ). Our NDT inspectors are qualified Level 2 and Level 3 ultrasonic, eddy current, liquid / fluorescent penetrant, magnetic particle and visual inspections.

NDT – VT Visual – Borescope inspection of the engine & APU

The visual inspection (borescope) of the aircraft engines for signs of mechanical and thermal damage or for bird-strike, that can be critical for the engine, is a common (maintenance program included) practice in all aviation sectors: commercial, military and private.

Our knowledge come from years of experience, therefore our team, based on intense borescope inspections and mechanical practices, is capable to make an appropriate evaluation about the condition and reliability of your engine.

Today NDT – VT inspection is the most usual method used for regular inspection for the engine on-wing, such as: compressor, combustion chamber, NGV and turbine.

The visual inspection is required also in following cases:

  • Foreign Object Damage Inspection– FOD,
  • Volcanic Ash, Dust or Sand Ingestion Inspection,
  • Engine Exposure to Fire, High Nacelle Temperature and Extinguishing Agents Inspection,
  • Engine Operations Above the Limits and High Engine Stress Inspection,
  • Bird strike Inspection

The visual inspection is also used for hidden frame section or hard to inspect areas in respect of finding corrosion or other damages, or failure.

1

Low Pressure Compressor

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2

High Pressure Compressor

Stage 4 CFM 56-3C1 Missing material at the leading edge

3

Combustion Chamber

CFM 54 Connecting 2 axial cracks on inner liner nr. 4 and 1 circumferential crack less one dilution land

5

Nozzle Guide Vane

Radial & axial cracks on convex airfoil

4

High Pressure Turbine

Blades Damage Convex Side

6

Low Pressure Turbine

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NDT - UT Ultrasonic Inspection

This method utilizes sound waves (vibrations) that travel through metals at rates that are determined by the material’s physical characteristics of elasticity, density, and homogeneity. The technique, sensitive method that can be used in most materials, metallic, nonmetallic, magnetic or nonmagnetic, has proven to be extremely useful in finding structure-critical material irregularities. UT method is based on easy-to-use portable testing equipment and is applicable for a wide range of materials

Our expert inspectors use ultrasonic testing to detect: surface and subsurface cracks, delamination, lack of fusion, lack of penetration, incomplete penetration.

All NDT – UT inspections comply with FAA, EASA and manufacturers regulations and requiring standards (ASTM E 164, ASTM E 587, ASTM E 1316, NAS 410, EN 4179, RACR-NDT, SR-EN-ISO 9001) and all similar and international standards.

Eddy-current Inspection

With eddy-current technique our specialized team reveal surface and subsurface flaws. This method sensitive to small imperfections allows us to inspect different aircraft components for: corrosion on an inner surface, and conductivity caused by fatigue, stress, and extreme heat, cracks propagating from the edges of fastener holes with and without fasteners removed, cracks occurring at section changes and in blended areas, fire damage or over-aging of aluminum alloys, use also for measurement of thin wall thickness’ from one surface only, for measuring thin coatings , measuring case depth skin corrosion detection, bolt Hole Inspection crack verification and detection.

The eddy current non-destructive testing method employs the electromagnetic field produced by an alternating current passing through a small coil which, when in contact with, or in close proximity to an electrically conducting material, induced eddy current to flow in the material. The electromagnetic field generated by the coil produces a secondary field in the test specimen. The interaction between these electromagnetic fields can be measured since the flow of the secondary field, when disturbed, by cracks in the material, influences the primary field and thus the resistance of the coil. When the bridge circuit is in a balanced state, unbalance will occur when the coil detects a defect in the test specimen.

Eddy current testing equipment consists mainly of an oscillator, amplifier, power pack, display meter and probes.

Some of the advantages of eddy current testing include: can be employed to determine surface flaws on painted or coated surface, is very accurate for dimensional analysis of flaws or coating thickness, does not require couplant and it gives instantaneous response.

All NDT – ET inspections comply with FAA, EASA and manufacturers regulations and requiring standards (ASTM E 215, ASTM E 1316, NAS 410, EN 4179, RACR-NDT, SR-EN-ISO 9001 ) and all similar and international standards.

NDT - MT Magnetic Particle Inspection

This method is capable of detecting open to surface and just below the surface flaws. In this

Method the material is first magnetized either by using a permanent or an electromagnet, or by passing electric current through or around the material. In this time it is been used fluorescent ferrous particles on sprayed on the test surface. The discontinuities in the material causes distortion in the magnetic flux which in turn causes leakage of the magnetic fields at the discontinuity. The magnetic particles, attracted by the surface field, adhere to the edges of the discontinuity appearing the shape of the discontinuity.

Magnetic Particle Inspection is quicker, highly portable NDT and very sensitive method that can reveal using a UV lamp, fine surface and near to surface defects only for ferromagnetic materials.

All NDT – MT inspections comply with FAA, EASA and manufacturers regulations and requiring standards (ASTM E1444, ASTM E1316, AMS 3046, ASTM E 215, NAS 410, EN 4179, RACR-NDT, SR-EN-ISO 9001 ) and all similar and international standards.

NDT - PT Liquid Penetrant Inspection

In addition to visual inspection, PT is used to detect surface defects in alloy materials. This fast and economical method is also called as Dye Penetrant Inspection or Penetrant Testing. These specially prepared liquids easily enter surface-connected voids when the part is dipped into or sprayed by the liquid penetrant.

This is a method which can be employed for the detection of open-to-surface discontinuities in any aeronautical (or civil) product which is made from a non-porous material.

In this method a liquid penetrant is applied to the surface of the product for a certain predetermined time, after which the excess penetrant is removed from the surface. The surface is then dried and a developer is applied to it. The penetrant which remains in the discontinuity is absorbed by the developer to indicate the presence as well as the location, size and nature of the discontinuity. Penetrants used are either visible dye penetrant or fluorescent dye penetrant.

The inspection for the presence of visible dye indications is made under white light while inspection of presence of very fine fatigue cracks by fluorescent dye penetrant is made under ultraviolet (or black) light.

All NDT – PT inspections comply with FAA, EASA and manufacturers regulations and requiring standards (ASTM E1417, ASTM E 1219, QPL-AMS-2644, ASTM E 1316, NAS 410, EN 4179, RACR-NDT, SR-EN-ISO 9001 ) and all similar and international standards.

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