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Fri, Jul 12, 2013

AD: Dowty Propellers

AD NUMBER: 2010-17-11R1

PRODUCT: All Dowty Propellers R408/6-123-F/17 model propellers.
SUBJECT: Airworthiness Directive 2010-17-11R1
ACTION: Final Rule

SUMMARY: The FAA is revising an existing airworthiness directive (AD) that applies to the product listed above.

That AD currently requires initial applications of sealant between the bus bar assembly and the backplate assembly of certain line-replaceable units, and repetitive applications of sealant on all R408/6-123-F/17 model propellers. This new AD requires the same actions and allows the use of an equivalent sealant as prescribed in revised service information.

This AD was prompted by the need to add an optional terminating action to the applications of sealant. The FAA is issuing this AD to prevent an in-flight double generator failure, which could result in reduced control of the airplane.

DATES: This AD is effective August 14, 2013.

FMI: AD

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