Fri, Jun 03, 2011
Comments On New AD Due By June 6
The FAA announced in April that it is superseding an existing
emergency airworthiness directive (EAD) for the Bell Helicopter
Textron, Inc. (Bell) Model 212 helicopters with a certain main
rotor hub inboard strap fitting (fitting) installed. The period for
public comment on the AD is about to close.
Bell 212 File Photo
That EAD requires, before further
flight, removing certain serial-numbered fittings and replacing
them with airworthy fittings. It also requires performing a
magnetic particle inspection (MPI) on fittings with certain serial
numbers (S/Ns) to inspect for a crack. If a crack is found, the
cracked fitting must be replaced with an airworthy fitting, and
certain data must be reported to the FAA.
This airworthiness directive (AD) retains the requirements of that
EAD and expands the applicability to require performing an MPI for
a crack on additional serial-numbered fittings. This AD is prompted
by the determination that certain fittings were not manufactured in
accordance with the approved manufacturing processes and controls.
In total, eight fittings have been found that have cracks. The FAA
issued this AD to prevent failure of a fitting, loss of a main
rotor blade, and subsequent loss of control of the
Comments on this AD will be accepted until June 6, 2011.
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