AD on Landing Gear Aft Crosstube Assembly for Agusta AB412 and Bell 412 Helicopters

The FAA is adopting a new airworthiness directive (AD) 2012-11-13 for the Aeronautical Accessories, Inc. (AAI), High Landing Gear Aft Crosstube Assembly (aft crosstube) installed on certain Bell Helicopter Textron, Inc. (Bell) and Agusta S.p.A. (Agusta) model helicopters as an approved Bell part installed during production or based on a Supplemental Type Certificate (STC). This AD requires certain recurring visual, dimensional, and fluorescent penetrant inspections of each aft crosstube, and replacing any cracked crosstube. This AD also requires establishing a life limit and creating a component history card or equivalent record for one of the affected part-numbered aft crosstubes. This AD was prompted by three reports of failed crosstubes because of cracks. The actions are intended to prevent failure of a crosstube, collapse of the landing gear, and subsequent loss of control of the helicopter.

DATES: This AD is effective July 30, 2012.

2012-11-13 – Rotorcraft/Agusta S.p.A./AB412 2012-11-13 – Rotorcraft/Agusta S.p.A./AB412 EP 2012-11-13 – Rotorcraft/Bell Helicopter Textron/412 2012-11-13 – Rotorcraft/Bell Helicopter Textron/412CF 2012-11-13 – Rotorcraft/Bell Helicopter Textron/412EP

pdf icon2012-11-13.pdf

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