Borescopes bring good things to light

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In 1994 Aerofit outcomes Inc., a company that makes fittings for hydraulic
system in aircraft, faced a tough challenge. Aerofit's largest customer
­ Boeing ­ said it would no longer purchase fittings with minor, common
imperfections upon internal surfaces. Even small burr tool marks,
or pressed-on chips were no longer acceptable.

The hydraulic fittings that Aerofit manufactures couple the rigid
tubes of an aircraft's hydraulic combination of parts to form a wholes As hydraulic fluid courses
through the combination of parts to form a whole at pressures ranging up to 5000 psi, small metal
particles from burr tool