[Federal Register Volume 70, Number 20 (Tuesday, February 1, 2005)]
[Proposed Rules]
[Pages 5073-5076]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-1806]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2005-20221; Directorate Identifier 2004-NM-173-AD]
RIN 2120-AA64


Airworthiness Directives; Airbus Model A330, A340-200, and A340-
300 Series Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for all Airbus Model A330, A340-200, and A340-300 series airplanes. 
This proposed AD would require inspecting to determine the part number 
and serial number of the left- and right-hand elevator assemblies, 
performing related investigative and corrective actions if necessary, 
and re-protecting the elevator assembly. This proposed AD is prompted 
by reports that areas on the top skin panel of the right-hand elevator 
have disbonded due to moisture penetration. We are proposing this AD to 
prevent disbonding of the elevator assembly, which could reduce the 
structural integrity of the elevator and result in reduced 
controllability of the airplane.

DATES: We must receive comments on this proposed AD by March 3, 2005.

ADDRESSES: Use one of the following addresses to submit comments on 
this proposed 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.

[[Page 5074]]

     By 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.
    For service information identified in this proposed AD, contact 
Airbus, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France.
    You can examine the contents of this AD docket on the Internet at 
http://dms.dot.gov, or in person at the Docket Management Facility, 
U.S. Department of Transportation, 400 Seventh Street SW., room PL-401, 
on the plaza level of the Nassif Building, Washington, DC. This docket 
number is FAA-2005-20221; the directorate identifier for this docket is 
2004-NM-173-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:

Comments Invited

    We invite you to submit any relevant written data, views, or 
arguments regarding this proposed AD. Send your comments to an address 
listed under ADDRESSES. Include ``Docket No. FAA-2005-20221; 
Directorate Identifier 2004-NM-173-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of the proposed AD. We will 
consider all comments submitted by the closing date and may amend the 
proposed AD in light of those comments.
    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 proposed AD. Using the search function of our 
docket website, 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 can review the DOT's complete Privacy Act Statement in the 
Federal Register published on April 11, 2000 (65 FR 19477-78), or you 
can visit http://dms.dot.gov.

Examining the Docket

    You can 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 DMS receives them.

Discussion

    The Direction G[eacute]n[eacute]rale 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, A340-200, and 
A340-300 series airplanes. The DGAC advises that operators have found 
areas on the top skin panel of the right-hand elevator that have 
disbonded due to moisture penetration. The disbonded areas were 
adjacent to inboard actuator attach fittings. Investigation identified 
a serial-number range of elevators that had not been tested for water 
leaks in production. Disbonding of the elevator assembly, if not 
corrected, could reduce the structural integrity of the elevator, which 
could result in reduced controllability of the airplane.
    Affected parts may be installed on either the left-or right-hand 
elevator assembly. Thus, the left-hand elevator assembly may be subject 
to the same unsafe condition revealed on the right-hand elevator 
assembly.

Relevant Service Information

    Airbus has issued Service Bulletins A330-55-3032 (for Model A330 
series airplanes) and A340-55-4029 (for Model A340-200 and -300 series 
airplanes), both dated December 22, 2003. Those service bulletins 
describe procedures for investigative and corrective actions related to 
inspecting/testing the left- and right-hand elevator assemblies for 
evidence of moisture penetration. The inspection procedures include:
     Performing an inspection of the inner skin of the upper 
and lower elevator panels using an endoscope to detect damage (such as 
a scratch, disbonding, or a tear) of the Tedlar film.
     Performing a tap test to detect moisture penetration in 
the inner side of the upper and lower elevator panels.
     Performing a thermographic inspection to detect moisture 
penetration in the upper and lower elevator panels.
    If damage is detected, corrective actions include repeating the 
thermographic inspection to determine the size of the damaged area, 
performing a tap test around the areas where moisture is indicated, and 
repairing the areas affected by moisture penetration. The service 
bulletins specify contacting Airbus for repair instructions for certain 
conditions.
    The service bulletins also specify procedures for re-protecting the 
elevator assembly, regardless of whether damage is detected. These 
procedures include visually inspecting the drainage holes to determine 
if they are clean, cleaning the drainage holes if necessary, inspecting 
to determine the condition of the sealant covering the static 
discharges contour, and reapplying sealant if necessary.
    Accomplishing the actions specified in the applicable service 
bulletin is intended to adequately address the unsafe condition. The 
DGAC mandated the service information and issued French airworthiness 
directive F-2004-118 R1, dated October 13, 2004, to ensure the 
continued airworthiness of these airplanes in France.

FAA's Determination and Requirements of the Proposed AD

    These airplane models are manufactured in France and are type 
certificated for operation in the United States under the provisions of 
section 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 proposing this AD, which would require inspecting 
to determine the part number and serial number of the left- and right-
hand elevator assemblies. This proposed AD also would require, if 
necessary, performing the investigative/corrective actions specified in 
the service information described previously, except as discussed under 
``Differences Among the Proposed AD, the French Airworthiness 
Directive, and the Service Information.''

Differences Among the Proposed AD, the French Airworthiness Directive, 
and the Service Information

    The effectivity of the French airworthiness directive includes only 
airplanes that have elevator assemblies having certain part number and 
serial number combinations. This proposed AD would apply to all 
airplanes of the affected models, and would require performing an 
initial inspection to determine if elevator assemblies having

[[Page 5075]]

the part number and serial number combinations specified in the French 
airworthiness directive are installed. (No further action would be 
required if no elevator assembly having the subject part number and 
serial number combination is installed.) We find that it is necessary 
to expand the applicability to ensure that the related investigative 
actions that would be required by this proposed AD are performed if an 
elevator assembly having an affected part number and serial number 
combination is installed in the future. (Paragraph (i) of this proposed 
AD would prohibit installation of an elevator assembly having an 
affected part number and serial number unless the related investigative 
actions required by paragraph (h) of this AD are accomplished.)
    French airworthiness directive F-2004-118 R1 specifies an 
inspection threshold of the earlier of 10 years or 12,000 flight cycles 
since the first flight of the airplane. However, paragraph (g) of this 
proposed AD specifies an inspection threshold of the earlier of 10 
years after the date of issuance of the original Airworthiness 
Certificate or the date of issuance of the original Export Certificate 
of Airworthiness, or 12,000 total flight cycles. This decision is based 
on our determination that ``first flight of the airplane'' may be 
interpreted differently by different operators. We find that our 
proposed terminology is generally understood within the industry, and 
records will always exist that establish these dates with certainty.
    The French airworthiness directive and the Accomplishment 
Instructions of the referenced service bulletins specify that you may 
contact the manufacturer for instructions on how to repair certain 
conditions, but this proposed AD would require you to repair those 
conditions using a method that we or the DGAC (or its delegated agent) 
approve. In light of the type of repair that would be required to 
address the unsafe condition, and consistent with existing bilateral 
airworthiness agreements, we have determined that, for this proposed 
AD, a repair that we or the DGAC approve would be acceptable for 
compliance with this proposed AD.
    The French airworthiness directive and the Accomplishment 
Instructions of the referenced service bulletins describe procedures 
for submitting certain information to the manufacturer. This proposed 
AD would not require that action.

Clarification of Inspection Terminology

    In this proposed AD, the visual inspection of the drain holes and 
the inspection to determine the condition of the sealant covering the 
static discharges contour are referred to as ``general visual 
inspections.'' We have included the definition for a general visual 
inspection in a note in the proposed AD.

Costs of Compliance

    This proposed AD would affect about 20 airplanes of U.S. registry. 
The proposed inspection to determine the part number and serial number 
of installed elevator assemblies would take about 1 work hour per 
airplane, at an average labor rate of $65 per work hour. Based on these 
figures, the estimated cost of the proposed AD for U.S. operators is 
$1,300, or $65 per airplane.

Authority for This Rulemaking

    The FAA's authority to issue rules regarding aviation safety is 
found in Title 49 of the United States Code. 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.
    This rulemaking is promulgated under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701, ``General 
requirements.'' Under that section, the FAA is charged 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 
proposed AD.

Regulatory Findings

    We have determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD 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.
    For the reasons discussed above, I certify that the 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. 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 proposed AD. 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, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 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. The FAA amends Sec.  39.13 by adding the following new 
airworthiness directive (AD):

Airbus: Docket No. FAA-2005-20221; Directorate Identifier 2004-NM-
173-AD.

Comments Due Date

    (a) The Federal Aviation Administration must receive comments on 
this AD action by March 3, 2005.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to all Airbus Model A330, A340-200, and 
A340-300 series airplanes; certificated in any category.

Unsafe Condition

    (d) This AD was prompted by reports that areas on the top skin 
panel of the right-hand elevator have disbonded due to moisture 
penetration. We are issuing this AD to prevent disbonding of the 
elevator assembly, which could reduce the structural integrity of 
the elevator and result in 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 Bulletin References

    (f) The term ``service bulletin,'' as used in this AD, means the 
Accomplishment Instructions of Airbus Service Bulletin A330-55-3032 
(for Model A330 series airplanes) or Airbus Service Bulletin A340-
55-4029 (for Model A340-200 and -300 series airplanes), both dated 
December 22, 2003, as applicable.
    (1) Where the service bulletins recommend contacting Airbus for 
appropriate action: Before further flight, repair the condition 
according to a method approved by the Manager, International Branch, 
ANM-116, Transport Airplane Directorate, FAA; or the Direction 
G[eacute]n[eacute]rale de l'Aviation Civile (or its delegated 
agent).
    (2) Although the service bulletins specify submitting certain 
information to the

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manufacturer, this AD does not include that requirement.

Determining Part Number, Serial Number

    (g) At the later of the times specified in paragraphs (g)(1) and 
(g)(2) of this AD: Perform an inspection to determine the part 
number and serial number of the left- and right-hand elevator 
assemblies. If neither elevator assembly has a part number and 
serial number combination identified in Table 1 of this AD, no 
further action is required by this paragraph. If either elevator 
assembly has a part number and serial number combination identified 
in Table 1 of this AD, do paragraph (h) of this AD.
    (1) Within 10 years after the date of issuance of the original 
Airworthiness Certificate or the date of issuance of the original 
Export Certificate of Airworthiness, or before the accumulation of 
12,000 total flight cycles, whichever is first.
    (2) Within 18 months after the effective date of this AD.

       Table 1.--Affected Elevator Part Numbers and Serial Numbers
------------------------------------------------------------------------
                                     Affected part     Affected serial
               Part                     numbers            numbers
------------------------------------------------------------------------
Left-hand elevator assembly......     F55280000000,  CG1002 through
                                       F55280000004   CG1091 inclusive,
                                                      CG1093, CG1094,
                                                      CG2001.
Right-hand elevator assembly.....     F55280000001,  CG1002 through
                                       F55280000005   CG1094 inclusive,
                                                      CG2001.
------------------------------------------------------------------------

Inspections

    (h) If the left- or right-hand elevator assembly has a part 
number and serial number combination identified in Table 1 of this 
AD: Before further flight after accomplishing paragraph (g) of this 
AD, do the actions in paragraphs (h)(1), (h)(2), and (h)(3) of this 
AD, as applicable.
    (1) Perform an endoscopic inspection to detect damage (such as a 
scratch, disbonding, or a tear), and a tap test and a thermographic 
inspection to detect signs of moisture penetration, to the upper and 
lower elevator panels on both sides of the airplane, in accordance 
with the service bulletins.
    (2) If any damage is found, before further flight, do all 
applicable corrective actions (including but not limited to 
repeating the thermographic inspection to determine the size of the 
damaged area, and performing a tap test around the areas where 
moisture is indicated), in accordance with the service bulletin.
    (3) Re-protect the elevator assembly (including performing a 
general visual inspection to determine if the drainage holes are 
clean, a general visual inspection to determine the condition of the 
sealant covering the static discharges contour, and applicable 
corrective actions), in accordance with the service bulletin.


    Note 1: For the purposes of this AD, a general visual inspection 
is: ``A visual examination of an interior or exterior area, 
installation, or assembly to detect obvious damage, failure, or 
irregularity. This level of inspection is made from within touching 
distance unless otherwise specified. A mirror may be necessary to 
ensure visual access to all surfaces in the inspection area. This 
level of inspection is made under normally available lighting 
conditions such as daylight, hangar lighting, flashlight, or 
droplight and may require removal or opening of access panels or 
doors. Stands, ladders, or platforms may be required to gain 
proximity to the area being checked.''

Parts Installation

    (i) As of the effective date of this AD, no person may install, 
on any airplane, an elevator assembly having a part number and 
serial number combination identified in Table 1 of this AD unless 
the actions required by paragraph (h) of this AD are accomplished.

Alternative Methods of Compliance (AMOCs)

    (j) The Manager, International Branch, ANM-116, has the 
authority to approve AMOCs for this AD, if requested in accordance 
with the procedures found in 14 CFR 39.19.

Related Information

    (k) French airworthiness directive F-2004-118 R1, dated October 
13, 2004, also addresses the subject of this AD.

    Issued in Renton, Washington, on January 21, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-1806 Filed 1-31-05; 8:45 am]
BILLING CODE 4910-13-P