Sun, Jun 21, 2009
AD NUMBER: 2009-12-02
MANUFACTURER: Airbus Model
A300 Airplanes; Model A300 B4-601, B4-603, B4-620, B4-622, B4-605R,
B4-622R, F4-605R, F4-622R, and C4-605R Variant F Airplanes
(Collectively Called A300-600 Series Airplanes); and Model A310
Airplanes
SUBJECT: Airworthiness Directive 2009-12-02
SUMMARY: The FAA is superseding an existing
airworthiness directive (AD), which applies to the airplanes
identified above. That AD currently requires revising the
FAA-approved maintenance program to include a new airplane
maintenance manual task that specifies a detailed inspection after
each ram air turbine (RAT) retraction. That existing AD also
currently requires, for certain airplanes, a one-time inspection to
detect breaks in the bottom flange fitting of the RAT and
corrective actions, if necessary; for certain airplanes, an
adjustment of the ejection jack; and, for certain other airplanes,
replacement of the aluminum part with an improved steel part. This
AD also continues to require certain actions for additional
airplanes and revising the FAA-approved maintenance program to
include procedures for replacing the RAT swivel coupling fork
fitting with a new steel part only. This AD results from a report
that an additional swivel coupling of the RAT yoke fitting was
found cracked during the accomplishment of the requirements of the
existing AD. We are issuing this AD to prevent misrigging of the
ejection jack of the RAT and to ensure removal of any RAT yoke
fitting made from aluminum material. Such conditions could result
in a broken or cracked swivel coupling and consequent failure of
the RAT yoke fitting, which could result in the loss of RAT
function and possible loss of critical flight control systems in
the event of certain emergency situations.
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