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Wed, Aug 12, 2009

AD: Pilatus

AD NUMBER: 2009-16-02

MANUFACTURER: Pilatus Aircraft Limited Model PC-7 Airplanes
SUBJECT: Airworthiness Directive 2009-16-02

SUMMARY: This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

This Airworthiness Directive (AD) is prompted due to reported corrosion on the bolts and in the bores of the attachment fittings for the engine mounting frame. The corrosion is caused by damaged cadmium plating of the bolts or damaged surface finish of the attachment fitting.

Such a condition, if left uncorrected, could lead to crack initiation at the bolt and the fitting bore and subsequently to the failure of the engine attachment fitting.

We are issuing this AD to require actions to correct the unsafe condition on these products.

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/402849B9BA369DC58625760900512FCD?OpenDocument

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