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Cessna believes that each aircraft need to have an extensive inspection in these areas because of the age of the fleet and no history of corrosion program. The engineers have tried to develop an alternate method of inspecting the wing and strut attach points without removing the bolts but this effort has not yielded another process other than eddy current. The only way to achieve positive results with the eddy current in these specific areas is to remove the bolts. The SID inspection is detecting cracks and signs of metal fatigue where the corrosion inspection is a visual inspection.
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Herb R Harney
1968 337C
Flying the same Skymaster for 47 years
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01-13-10, 08:14 AM
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