Fri, Sep 07, 2007
AD NUMBER: 2007-18-09
MANUFACTURER: Airbus
SUBJECT: Airworthiness Directive 2007-18-09
SUMMARY: The FAA is
superseding an existing airworthiness directive (AD), which applies
to all Airbus Model A318-100, A319-100, A320-200, A321-100, and
A321-200 series airplanes, and Model A320-111 airplanes.
That AD currently requires an inspection to determine whether
certain braking and steering control units (BSCUs) are installed or
have ever been installed.
For airplanes on which certain BSCUs are installed or have ever
been installed, the existing AD requires an inspection of the nose
landing gear (NLG) upper support, and corrective action if
necessary; and a check of the NLG strut inflation pressure, and an
adjustment if necessary. For some of these airplanes, the existing
AD also requires a revision to the aircraft flight manual to
incorporate an operating procedure to recover normal steering in
the event of a steering failure.
This new AD instead requires repetitive inspections of the NLG
upper support, and related investigative/corrective actions in
accordance with new service information; and removes the onetime
inspection that was required by the existing AD. This new AD also
provides an optional terminating action for the repetitive
inspections.
This AD results from a report of an incident wherean airplane
landed with the NLG turned 90 degrees from centerline, and from
additional reports of NLG upper support anti-rotation lugs
rupturing in service.
We are issuing this AD to prevent landings with the NLG turned
90 degrees from centerline, which could result in reduced
controllability of the airplane.
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