[Federal Register Volume 66, Number 84 (Tuesday, May 1, 2001)]
[Proposed Rules]
[Pages 21697-21698]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 01-10724]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2001-NM-72-AD]
RIN 2120-AA64


Airworthiness Directives; Airbus Model A300 B2; A300 B4; A300 B4-
600, B4-600R, and F4-600R (Collectively Called A300-600); A310; A319; 
A320; A321; A330; and A340 Series Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: This document proposes the adoption of a new airworthiness 
directive (AD) that is applicable to certain Airbus Model A300 B2; A300 
B4; A300 B4-600, B4-600R, and F4-600R (collectively called A300-600); 
A310; A319; A320; A321; A330; and A340 series airplanes. This proposal 
would require replacement of Labinal actuators in certain powered 
cockpit seats by new improved actuators. This action is necessary to 
prevent uncommanded horizontal movement of the cockpit seats or loss of 
ability to lock the seats in place during flight, which could limit the 
ability of the crew to perform necessary tasks, leading to reduced 
controllability of the airplane. This action is intended to address the 
identified unsafe condition.

DATES: Comments must be received by May 31, 2001.

ADDRESSES: Submit comments in triplicate to the Federal Aviation 
Administration (FAA), Transport Airplane Directorate, ANM-114, 
Attention: Rules Docket No. 2001-NM-72-AD, 1601 Lind Avenue, SW., 
Renton, Washington 98055-4056. Comments may be inspected at this 
location between 9:00 a.m. and 3:00 p.m., Monday through Friday, except 
Federal holidays. Comments may be submitted via fax to (425) 227-1232. 
Comments may also be sent via the Internet using the following address: 
<a href="/cdn-cgi/l/email-protection#bc8591ddd2d191d2ccced1dfd3d1d1d9d2c8fcdadddd92dbd3ca"><span class="__cf_email__" data-cfemail="e2dbcf838c8fcf8c92908f818d8f8f878c96a2848383cc858d94">[email protected]</span></a>. Comments sent via fax or the Internet must 
contain ``Docket No. 2001-NM-72-AD'' in the subject line and need not 
be submitted in triplicate. Comments sent via the Internet as attached 
electronic files must be formatted in Microsoft Word 97 for Windows or 
ASCII text.
    The service information referenced in the proposed rule may be 
obtained from SOGERMA Z.I. de l'arsenal, BP. 109-17303 Rochefort Cedex, 
France. This information may be examined at the FAA, Transport Airplane 
Directorate, 1601 Lind Avenue, SW., Renton, Washington.

FOR FURTHER INFORMATION CONTACT: Dan Rodina, Aerospace Engineer, 
International Branch, ANM-116, FAA, Transport Airplane Directorate, 
1601 Lind Avenue, SW., Renton, Washington 98055-4056, telephone (425) 
227-2125; fax (425) 227-1149.

SUPPLEMENTARY INFORMATION:

Comments Invited

    Interested persons are invited to participate in the making of the 
proposed rule by submitting such written data, views, or arguments as 
they may desire. Communications shall identify the Rules Docket number 
and be submitted in triplicate to the address specified above. All 
communications received on or before the closing date for comments, 
specified above, will be considered before taking action on the 
proposed rule. The proposals contained in this action may be changed in 
light of the comments received.
    Submit comments using the following format:
    <bullet> Organize comments issue-by-issue. For example, discuss a 
request to change the compliance time and a request to change the 
service bulletin reference as two separate issues.
    <bullet> For each issue, state what specific change to the proposed 
AD is being requested.
    <bullet> Include justification (e.g., reasons or data) for each 
request.
    Comments are specifically invited on the overall regulatory, 
economic, environmental, and energy aspects of the proposed rule. All 
comments submitted will be available, both before and after the closing 
date for comments, in the Rules Docket for examination by interested 
persons. A report summarizing each FAA-public contact concerned with 
the substance of this proposal will be filed in the Rules Docket.
    Commenters wishing the FAA to acknowledge receipt of their comments 
submitted in response to this action must submit a self-addressed, 
stamped postcard on which the following statement is made: ``Comments 
to Docket Number 2001-NM-72-AD.'' The postcard will be date stamped and 
returned to the commenter.

Availability of NPRMs

    Any person may obtain a copy of this NPRM by submitting a request 
to the FAA, Transport Airplane Directorate, ANM-114, Attention: Rules 
Docket Number 2001-NM-72-AD, 1601 Lind Avenue, SW., Renton, Washington 
98055-4056.

Discussion

    The Direction Generale de l'Aviation Civile (DGAC), which is the 
airworthiness authority for France, recently notified the FAA that an 
unsafe condition may exist on Airbus Model A300 B2; A300 B4; A300 B4-
600, B4-600R, and F4-600R (collectively called A300-600); A310; A319; 
A320; A321; A330; and A340 series airplanes, equipped with certain 
powered cockpit seats manufactured by SOGERMA. The DGAC advises that 
there have been incidents of uncommanded horizontal movement of the 
seats during flight. Investigation indicated that these incidents were 
due to broken Labinal actuators for the electric brake on the seats. 
This condition, if not corrected, could result in uncommanded movement 
of the cockpit seats or loss of ability to lock the seats into place 
during flight, which could limit the ability of the crew to perform 
necessary tasks, leading to reduced controllability of the airplane.

Explanation of Relevant Service Information

    SOGERMA has issued Service Bulletin SB TAAI2-25-402, Revision 1, 
dated December 21, 2000, which describes procedures for replacement of 
the Labinal actuators in the cockpit seats with new improved actuators. 
Accomplishment of the actions specified in the service bulletin is 
intended to adequately address the identified unsafe condition. The 
DGAC classified this service bulletin as mandatory and issued French 
airworthiness directive 2000-524(B), dated December 27, 2000, in order 
to

[[Page 21698]]

assure the continued airworthiness of these airplanes in France.

FAA's Conclusions

    These airplane models are manufactured in France and are type 
certificated for operation in the United States under the provisions of 
Sec. 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. The FAA has examined the findings of 
the DGAC, reviewed all available information, and determined that AD 
action is necessary for products of this type design that are 
certificated for operation in the United States.

Explanation of Requirements of Proposed Rule

    Since an unsafe condition has been identified that is likely to 
exist or develop on other airplanes of the same type design registered 
in the United States, the proposed AD would require accomplishment of 
the actions specified in the service bulletin described previously.

Cost Impact

    The FAA estimates that 548 airplanes of U.S. registry would be 
affected by this proposed AD, that it would take approximately 4 work 
hours per airplane to accomplish the proposed replacement, and that the 
average labor rate is $60 per work hour. Required parts would be 
provided at no cost to the operator. Based on these figures, the cost 
impact of the proposed AD on U.S. operators is estimated to be 
$131,520, or $240 per airplane.
    The cost impact figure discussed above is based on assumptions that 
no operator has yet accomplished any of the proposed requirements of 
this AD action, and that no operator would accomplish those actions in 
the future if this proposed AD were not adopted. The cost impact figure 
discussed in AD rulemaking actions represent only the time necessary to 
perform the specific actions actually required by the AD. These figures 
typically do not include incidental costs, such as the time required to 
gain access and close up, planning time, or time necessitated by other 
administrative actions.

Regulatory Impact

    The regulations proposed herein would 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. Therefore, it 
is determined that this proposal would not have federalism implications 
under Executive Order 13132.
    For the reasons discussed above, I certify that this proposed 
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) if promulgated, 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. A copy of the draft 
regulatory evaluation prepared for this action is contained in the 
Rules Docket. A copy of it may be obtained by contacting the Rules 
Docket at the location provided under the caption ADDRESSES.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

The Proposed Amendment

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the Federal Aviation Administration proposes to amend 
part 39 of the Federal Aviation Regulations (14 CFR part 39) as 
follows:

PART 39--AIRWORTHINESS DIRECTIVES

    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]

    2. Section 39.13 is amended by adding the following new 
airworthiness directive:

Airbus Industrie:  Docket 2001-NM-72-AD.

    Applicability: Model A300 B2; A300 B4; A300 B4-600, B4-600R, and 
F4-600R (collectively called A300-600); A310; A319; A320; A321; 
A330; and A340 series airplanes; certificated in any category; 
equipped with powered cockpit seats manufactured by SOGERMA and 
having the serial numbers listed in SOGERMA Service Bulletin SB 
TAAI2-25-402, Revision 1, dated December 21, 2000.

    Note 1: This AD applies to each airplane identified in the 
preceding applicability provision, regardless of whether it has been 
modified, altered, or repaired in the area subject to the 
requirements of this AD. For airplanes that have been modified, 
altered, or repaired so that the performance of the requirements of 
this AD is affected, the owner/operator must request approval for an 
alternative method of compliance in accordance with paragraph (c) of 
this AD. The request should include an assessment of the effect of 
the modification, alteration, or repair on the unsafe condition 
addressed by this AD; and, if the unsafe condition has not been 
eliminated, the request should include specific proposed actions to 
address it.

    Compliance: Required as indicated, unless accomplished 
previously.
    To prevent uncommanded horizontal movement of the cockpit seats 
or loss of ability to lock the seats into place during flight, which 
could limit the ability of the crew to perform necessary tasks, 
leading to reduced controllability of the airplane, accomplish the 
following:

Replacement

    (a) Within 6 months after the effective date of this AD: Remove 
Labinal actuators having part number (P/N) 4136290003 and replace 
them with Labinal actuators having P/N 4136290004 or 4136290005 or 
AVIAC actuators having P/N 6147-6, in accordance with SOGERMA 
Service Bulletin SB TAAI2-25-402, Revision 1, dated December 21, 
2000.

Spares

    (b) As of the effective date of this AD, no person shall install 
a powered cockpit seat which has a Labinal actuator having P/N 
4136290003 on any airplane.

Alternative Methods of Compliance

    (c) An alternative method of compliance or adjustment of the 
compliance time that provides an acceptable level of safety may be 
used if approved by the Manager, International Branch, ANM-116, 
Transport Airplane Directorate, FAA. Operators shall submit their 
requests through an appropriate FAA Principal Maintenance Inspector, 
who may add comments and then send it to the Manager, International 
Branch, ANM-116.

    Note 2: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from the International Branch, ANM-116.

Special Flight Permits

    (d) Special flight permits may be issued in accordance with 
Secs. 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 
21.197 and 21.199) to operate the airplane to a location where the 
requirements of this AD can be accomplished.

    Note 3: The subject of this AD is addressed in French 
airworthiness directive 2000-524(B), dated December 27, 2000.


    Issued in Renton, Washington, on April 24, 2001.
Donald L. Riggin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 01-10724 Filed 4-30-01; 8:45 am]
BILLING CODE 4910-13-U


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