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Old 05-07-2020, 11:21 PM   #7
GB SISSON
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Join Date: Jan 2014
Location: Orcas Island Washington
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Default Re: Block Pressure Test

Quote:
Originally Posted by rotorwrench View Post
Some of the old French Aerospatiale helicopters fixed pressure indicators to the steel tube frames so that they could pressure them up with nitrogen gas. It was a daily requirement to check the BIM indicator for loss of pressure. It will indicate a crack if one forms in a structural part so equipped. They are also used on main rotor blades by some manufacturers.
I know very little about heavier than air craft, but I have heard that helicopters need a reliable drivetrain to stay aloft. I trust what you say about their mechanics.
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