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Engine and Gearbox Shock Load Inspection

The Rotax definition of a propeller strike is: Sudden stoppage or any type of incident while the engine is stationary or running which makes is necessary to perform repairs on the propeller.

Airmasters have the facilities, expertise and equipment to perform the required Shock Load Inspection. 
We offer both in-house and mobile services.

Shockload Inspection

Magnetic Particle Inspection is a non-destructive method for detecting defects in ferrous metals.  A magnetic field created with AC or DC current is applied through the material, causing distortion in the magnetic flow at the surface or near-surface flaw. 
Fine magnetic iron oxide particles, coated with a fluorescent dye and held in a suspension liquid, are attracted to the distortion in the magnetic field, in the area of the defect and will hold onto the edges of the defect to reveal it as a build-up of particles. The photographs show a Rotax 912 gears being viewed with ultra-violet light (black light) as part of the magnetic testing process.

Components are measured with precision instruments, to ensure they are within the tolerances specified by Rotax. 

A Crankshaft inspection is carried out to check  'Cylinder Phasing'. This process is to  measure if the crankshaft has been Twisted.

Shockload Inspection
Shockload Inspection

The Gearbox housing is checked for damage and a Dye Penetrant process is carried out to inspect for any cracks that may have been caused. 


A crack at the base of the tooth, highlighted by Magnaflux NDT test.

Shockload Inspection
Shockload Inspection

The picture (right) shows the broken gear tooth detached from the main gear, which was invisible to the naked eye.

Shockload Inspection
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