Tue, Nov 01, 2011
AD NUMBER: 2011-26-52
MANUFACTURER: Bell Helicopter Textron, Inc.
Model 204B, 205A, 205A-1, 205B, 210, 212, 412, 412CF, 412EP
SUBJECT: Airworthiness Directive 2011-26-52
ACTION: Final rule; request for comments.
SUMMARY: The FAA is publishing in the Federal
Register an amendment which was sent previously to all known U.S.
owners and operators that supersedes an existing airworthiness
directive (AD) for the specified Bell Helicopter Textron, Inc.
(BHT) Model helicopters with certain tail rotor blades
The superseded AD requires, before further flight, replacing
certain blades with airworthy blades. This AD retains the
requirements of the superseded AD but adds new blade part numbers
(P/Ns) and serial numbers (S/Ns) to the applicability.
This AD was prompted by another incident in which the blade tip
weight separated from a blade during flight, causing vibration.
This incident led to the determination that additional blades could
be affected, and should be added to the applicability.
The FAA is are issuing this AD to prevent loss of the blade tip
weight, loss of a blade, and subsequent loss of control of the
DATES: This AD is effective November 15, 2011
to all persons except those persons to whom it was made immediately
effective by Emergency AD
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