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Tue, Apr 02, 2013

AD: Hughes Helicopters, Inc.

AD NUMBER: 2013-05-16

PRODUCT: MD Helicopters, Inc. (MDHI) Model 369D, 369E, 369F, and 369FF helicopters with certain serial-numbered tailboom assemblies.
SUBJECT: Airworthiness Directive 2013-05-16
ACTION: Final Rule

SUMMARY: This AD requires measuring the distance between aft longeron rivets and the outboard edge of frame rings. If the distance is too short to ensure a safe flight, the AD requires installing a doubler. This AD was prompted by the discovery of short-edge margin conditions on two tailboom assemblies.

The actions are intended to detect a short-edge margin condition, prevent failure of the tailboom and loss of control of the helicopter.

DATES: This AD is effective April 30, 2013.

FMI: AD

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