[Federal Register: November 14, 2005 (Volume 70, Number 218)]
[Rules and Regulations]
[Page 69065-69067]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr14no05-12]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2005-22881; Directorate Identifier 2005-NM-202-AD;
Amendment 39-14368; AD 2005-23-10]
RIN 2120-AA64
Airworthiness Directives; Airbus Model A330-200 and A330-300
Series Airplanes; and Model A340-200 and A340-300 Series Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule; request for comments.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all
Airbus Model A330-200 and A330-300 series airplanes; and Model A340-200
and A340-300 series airplanes. This AD requires an accelerated schedule
of repetitive testing of the elevator servo control loops, and
corrective actions if necessary. This AD results from reports of failed
elevator servo controls due to broken guides. We are issuing this AD to
ensure proper functioning of the elevator servo controls. Failure of
the elevator servo controls during certain phases of takeoff could
result in an unannounced loss of elevator control and consequent
reduced controllability of the airplane.
DATES: This AD becomes effective November 29, 2005.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in the AD as of November 29,
2005.
We must receive comments on this AD by January 13, 2006.
ADDRESSES: Use one of the following addresses to submit comments on
this AD.
DOT Docket Web site: Go to http://dms.dot.gov and follow
the instructions for sending your comments electronically.
Government-wide rulemaking Web site: Go to http://www.regulations.gov
and follow the instructions for sending your
comments electronically.
Mail: Docket Management Facility; U.S. Department of
Transportation, 400 Seventh Street SW., Nassif Building, Room PL-401,
Washington, DC 20590.
Fax: (202) 493-2251.
Hand Delivery: Room PL-401 on the plaza level of the
Nassif Building, 400 Seventh Street SW., Washington, DC, between 9 a.m.
and 5 p.m., Monday through Friday, except Federal holidays.
Contact Airbus, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex,
France, for service information identified in this AD.
FOR FURTHER INFORMATION CONTACT: Tim Backman, Aerospace Engineer,
International Branch, ANM-116, FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425)
227-2797; fax (425) 227-1149.
SUPPLEMENTARY INFORMATION:
Discussion
The Direction Generale de l'Aviation Civile (DGAC), which is the
airworthiness authority for France, notified us that an unsafe
condition may exist on all Airbus Model A330-200 and A330-300 series
airplanes; and Model A340-200 and A340-300 series airplanes. The DGAC
advises that it has received reports of elevator servo control removals
resulting from the ``F/CTL ELEV SERVO FAULT'' warning. During repair,
some of these servo controls installed at the active position (2CS1)
(Left Green) or (2CS2) (Right Green) were found with a broken guide.
The broken guides resulted in the inability for the affected servo
controls to change their operating mode, leading to ``F/CTL ELEV SERVO
FAULT'' warnings. Results of the investigation revealed a fatigue
rupture inside the servo control induced by successive pressure cycles
and resulting in a progressive decrease of the tightening torque of the
plug to be the root cause of the broken guides.
Each elevator is equipped with two servo controls having three
operating modes: active mode, damping mode, and centering mode. In
normal operating conditions, each elevator is actuated by one servo
control in active mode, while the other is in damping mode. The mode
change from active to damping is achieved by a mode-selector spool
valve installed inside each servo control. The position of this spool
valve is commanded by a rod that slides through a guide. A broken guide
could result in the inability for the affected servo control to change
its operating mode.
Failure of the elevator servo controls during certain phases of
takeoff, if not corrected, could result in an unannounced loss of
elevator control and consequent reduced controllability of the
airplane.
Relevant Service Information
Airbus has issued All Operators Telex (AOT) A330-27A3138, Revision
01, dated October 3, 2005, for Model A330-200 and -300 series
airplanes; and AOT A340-27A4137, Revision 01, dated October 3, 2005,
for Model A340-200 and -300 series airplanes. The AOTs describe
procedures for repetitive tests of the elevator servo-loops and
corrective actions if the test fails. If the test fails, the AOTs
specify performing the associated troubleshooting manual tasks and
applicable corrective actions. The corrective actions include repairing
wiring, replacing certain solenoid valves, replacing certain mode
selector valve transducers, and replacing the elevator servo control,
among other actions, depending on the fault message displayed. The AOTs
also specify reporting failed tests and sending replaced servo controls
to Airbus.
The DGAC mandated the AOTs and issued French airworthiness
directive UF-2005-171, dated October 3, 2005, to ensure the continued
airworthiness of these airplanes in France.
FAA's Determination and Requirements of This AD
These airplane models are manufactured in France and are type
certificated for operation in the United States under the provisions of
section
[[Page 69066]]
21.29 of the Federal Aviation Regulations (14 CFR 21.29) and the
applicable bilateral airworthiness agreement. Pursuant to this
bilateral airworthiness agreement, the DGAC has kept the FAA informed
of the situation described above. We have examined the DGAC's findings,
evaluated all pertinent information, and determined that we need to
issue an AD for products of this type design that are certificated for
operation in the United States.
Therefore, we are issuing this AD to ensure proper functioning of
the elevator servo controls. Failure of the elevator servo controls
during certain phases of takeoff could result in an unannounced loss of
elevator control and consequent reduced controllability of the
airplane. This AD requires accomplishing the actions specified in the
service information described previously.
This AD also requires that operators report results of failed
servo-loop tests to Airbus. These required failed-test reports will be
instrumental in ensuring that as much information as possible is
gathered regarding the nature of the fatigue rupture causing the broken
guides and that the new design of servo control to be used in a
terminating modification, which the manufacturer is currently
developing, will adequately address the subject unsafe condition.
Clarification of Corrective Actions Specified in the French
Airworthiness Directive
The French airworthiness directive does not define what
``corrective actions'' should be taken when an elevator servo-loop test
fails. We have verified that those corrective actions are the actions
described previously under ``Relevant Service Information.''
Interim Action
We consider this AD interim action. The manufacturer is currently
developing a modification that will address the unsafe condition
identified in this AD. Once this modification is developed, approved,
and available, we may consider additional rulemaking.
FAA's Determination of the Effective Date
An unsafe condition exists that requires the immediate adoption of
this AD; therefore, providing notice and opportunity for public comment
before the AD is issued is impracticable, and good cause exists to make
this AD effective in less than 30 days.
Comments Invited
This AD is a final rule that involves requirements that affect
flight safety and was not preceded by notice and an opportunity for
public comment; however, we invite you to submit any relevant written
data, views, or arguments regarding this AD. Send your comments to an
address listed in the ADDRESSES section. Include ``Docket No. FAA-2005-
22881; Directorate Identifier 2005-NM-202-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of the AD that might
suggest a need to modify it.
We will post all comments we receive, without change, to http://dms.dot.gov
, including any personal information you provide. We will
also post a report summarizing each substantive verbal contact with FAA
personnel concerning this AD. Using the search function of that Web
site, anyone can find and read the comments in any of our dockets,
including the name of the individual who sent the comment (or signed
the comment on behalf of an association, business, labor union, etc.).
You may review the DOT's complete Privacy Act Statement in the Federal
Register published on April 11, 2000 (65 FR 19477-78), or you may visit
http://dms.dot.gov.
Examining the Docket
You may examine the AD docket on the Internet at http://dms.dot.gov
, or in person at the Docket Management Facility office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The Docket Management Facility office (telephone (800) 647-
5227) is located on the plaza level of the Nassif Building at the DOT
street address stated in the ADDRESSES section. Comments will be
available in the AD docket shortly after the Docket Management System
receives them.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII, Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in
subtitle VII, part A, subpart III, section 44701, ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
Regulatory Findings
We have determined that this AD will not have federalism
implications under Executive Order 13132. This AD will not have a
substantial direct effect on the States, on the relationship between
the National Government and the States, or on the distribution of power
and responsibilities among the various levels of government.
For the reasons discussed above, I certify that the regulation:
1. Is not a ``significant regulatory action'' under Executive Order
12866;
2. Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979); and
3. Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
We prepared a regulatory evaluation of the estimated costs to
comply with this AD and placed it in the AD docket. See the ADDRESSES
section for a location to examine the regulatory evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
0
Accordingly, under the authority delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The Federal Aviation Administration (FAA) amends Sec. 39.13 by
adding the following new airworthiness directive (AD):
2005-23-10 Airbus: Amendment 39-14368. Docket No. FAA-2005-22881;
Directorate Identifier 2005-NM-202-AD.
Effective Date
(a) This AD becomes effective November 29, 2005.
Affected ADs
(b) None.
Applicability
(c) This AD applies to all Airbus Model A330-201, -202, -203, -
223, -243, -301, -321, -322, -323, -341, -342, and -343
[[Page 69067]]
airplanes; and Model A340-211, -212, -213, -311, -312, and -313
airplanes; certificated in any category.
Unsafe Condition
(d) This AD results from reports of elevator servo control
failures due to broken guides. We are issuing this AD to ensure
proper functioning of the elevator servo controls. Failure of the
elevator servo controls during certain phases of takeoff could
result in an unannounced loss of elevator control and consequent
reduced controllability of the airplane.
Compliance
(e) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Service Information
(f) The term ``AOT,'' as used in this AD, means section 4.2.
``Description'' of the following service information, as applicable:
(1) For Model A330-200 and -300 series airplanes: Airbus All
Operators Telex A330-27A3138, Revision 01, dated October 3, 2005;
and
(2) For Model A340-200 and -300 series airplanes: Airbus All
Operators Telex A340-27A4137, Revision 01, dated October 3, 2005.
Initial and Repetitive Elevator Servo-Loop Tests
(g) Within 200 flight hours after the effective date of this AD:
Test the elevator servo-loops, in accordance with the AOT. If the
test of the elevator servo-loops passes, repeat the test at
intervals not to exceed 140 flight hours or 8 days, whichever occurs
first.
Failed Tests
(h) If any test of the elevator servo-loops required by
paragraph (g) of this AD fails: Before further flight, troubleshoot
the cause of the test failure, and do the applicable corrective
actions; in accordance with the AOT. Thereafter, repeat the test at
the times specified in paragraph (g) of this AD.
Reporting Requirement
(i) Following each test required by paragraph (g) of this AD,
submit a report of the findings of only failed elevator servo-loop
tests to Airbus Customer Services, Engineering and Technical
Support, Attention: Mr. J. Laurent, SEE53, fax +33/(0)5.61.93.44.25;
at the applicable time specified in paragraph (i)(1) or (i)(2) of
this AD. The report must include the description of the failure
experienced during the test, the identified cause of the failure,
and the number of flight hours and flight cycles on the airplane.
Under the provisions of the Paperwork Reduction Act of 1980 (44
U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has
approved the information collection requirements contained in this
AD and has assigned OMB Control Number 2120-0056.
(1) If the test was done after the effective date of this AD:
Submit the report within 10 days after the test.
(2) If the test was done prior to the effective date of this AD:
Submit the report within 10 days after the effective date of this
AD.
Alternative Methods of Compliance (AMOCs)
(j)(1) The Manager, International Branch, ANM-116, Transport
Airplane Directorate, FAA, has the authority to approve AMOCs for
this AD, if requested in accordance with the procedures found in 14
CFR 39.19.
(2) Before using any AMOC approved in accordance with Sec.
39.19 on any airplane to which the AMOC applies, notify the
appropriate principal inspector in the FAA Flight Standards
Certificate Holding District Office.
Related Information
(k) French airworthiness directive UF-2005-171, dated October 3,
2005, also addresses the subject of this AD.
Material Incorporated by Reference
(l) You must use Airbus All Operators Telex A330-27A3138,
Revision 01, dated October 3, 2005; or Airbus All Operators Telex
A340-27A4137, Revision 01, dated October 3, 2005; as applicable, to
perform the actions that are required by this AD, unless the AD
specifies otherwise. The Director of the Federal Register approved
the incorporation by reference of these documents in accordance with
5 U.S.C. 552(a) and 1 CFR part 51. Contact Airbus, 1 Rond Point
Maurice Bellonte, 31707 Blagnac Cedex, France, for a copy of this
service information. You may review copies at the Docket Management
Facility, U.S. Department of Transportation, 400 Seventh Street SW.,
room PL-401, Nassif Building, Washington, DC; on the Internet at
http://dms.dot.gov; or at the National Archives and Records
Administration (NARA). For information on the availability of this
material at the NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_
register/code--of-- federal--regulations/
ibr--locations.html.
Issued in Renton, Washington, on October 31, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-22213 Filed 11-10-05; 8:45 am]
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