[Federal Register Volume 71, Number 130 (Friday, July 7, 2006)]
[Rules and Regulations]
[Pages 38515-38516]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 06-6003]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2006-24367; Directorate Identifier 2006-NM-041-AD; 
Amendment 39-14677; AD 2006-14-06]
RIN 2120-AA64


Airworthiness Directives; Airbus Model A300 F4-600R Series 
Airplanes and Model A300 C4-605R Variant F Airplanes

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

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain Airbus Model A300 F4-600R series airplanes and Model A300 C4-
605R Variant F airplanes. This AD requires modifying certain structure 
in the fuselage zone at the lavatory venturi installation in the nose 
section, and performing a related investigative action and corrective 
action if necessary. This AD results from an analysis that revealed 
that airplanes equipped with Airbus Modification 08909 had a 
concentration of loads higher than expected in the fuselage zone (high 
stress) at the lavatory venturi installation in the nose section, which 
could be the origin of cracks that developed in the fuselage skin and 
propagated from the edge of the air vent hole. We are issuing this AD 
to prevent fatigue cracking of the fuselage skin, which could result in 
loss of the structural integrity of the fuselage and consequent rapid 
depressurization of the airplane.

DATES: This AD becomes effective August 11, 2006.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in the AD as of August 11, 
2006.

ADDRESSES: You may examine the 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., Nassif Building, 
Room PL-401, Washington, DC.
    Contact Airbus, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, 
France, for service information identified in this AD.

FOR FURTHER INFORMATION CONTACT: Tom Stafford, Aerospace Engineer, 
International Branch, ANM-116, Transport Airplane Directorate, FAA, 
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425) 
227-1622; fax (425) 227-1149.

SUPPLEMENTARY INFORMATION:

Examining the Docket

    You may examine the airworthiness directive (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 street address stated in the ADDRESSES section.

Discussion

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to include an AD that would apply to certain Airbus Model 
A300 F4-600R series airplanes and Model A300 C4-605R Variant F 
airplanes. That NPRM was published in the Federal Register on April 11, 
2006 (71 FR 18237). That NPRM proposed to require modifying certain 
structure in the fuselage zone at the lavatory venturi installation in 
the nose section, and performing a related investigative action and 
corrective action if necessary.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We have considered the single comment received.

Request To Add Revised Service Information

    The manufacturer, Airbus, advises that the service bulletin 
specified in the NPRM has been revised. Airbus notes that Airbus 
Service Bulletin A300-53-6151, Revision 01, dated April 21, 2006, 
contains minor changes and that no additional work is required.
    We agree with Airbus. We have reviewed Revision 01 of the service 
bulletin and agree that it does not necessitate additional work. We 
have revised paragraphs (f) and (g) of the AD to reflect the revised 
service bulletin. In addition, we have added a new paragraph (h) to 
this AD specifying that accomplishment of the actions specified in 
paragraph (f) of the AD in accordance with the original issue of the 
service bulletin is considered to be an acceptable method of 
compliance. Subsequent paragraphs of the AD have been re-identified 
accordingly.
    Revision 01 also includes a reduced cost for parts and we have 
revised the Costs of Compliance section of the AD to reflect that 
reduced cost.

Explanation of Change to This Final Rule

    Paragraph (g) of the NPRM specifies making repairs using a method 
approved by either the FAA or the Direction G[eacute]n[eacute]rale de 
l'Aviation Civile (or its delegated agent). The European Aviation 
Safety Agency (EASA) has assumed responsibility for the airplane models 
subject to this AD. Therefore, we have revised paragraph (g) of this AD 
to specify making repairs using a method approved by either the FAA or 
the EASA (or its delegated agent).

Conclusion

    We have carefully reviewed the available data, including the 
comment received, and determined that air safety and the public 
interest require adopting the AD with the changes described previously. 
These changes will neither increase the economic burden on any operator 
nor increase the scope of the AD.

Costs of Compliance

    This AD affects about 86 airplanes of U.S. registry. The 
modification (including the inspection) takes about 28 work hours per 
airplane, at an average labor rate of $80 per work hour. Required parts 
cost about $399 per airplane. Based on these figures, the estimated 
cost of the AD for U.S. operators is $226,954, or $2,639 per airplane.

[[Page 38516]]

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 this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866;
    (2) Is not a ``significant rule'' under 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):

2006-14-06 Airbus: Amendment 39-14677. Docket No. FAA-2006-24367; 
Directorate Identifier 2006-NM-041-AD.

Effective Date

    (a) This AD becomes effective August 11, 2006.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Airbus Model A300 F4-605R and F4-622R 
airplanes and Model A300 C4-605R Variant F airplanes, certificated 
in any category; on which Airbus Modification 08909 has been done in 
production; except airplanes on which Airbus Modification 12980 has 
been done in production.

Unsafe Condition

    (d) This AD results from an analysis that revealed that 
airplanes equipped with Airbus Modification 08909 had a 
concentration of loads higher than expected in the fuselage zone 
(high stress) at the lavatory venturi installation in the nose 
section, which could be the origin of cracks that developed in the 
fuselage skin and propagated from the edge of the air vent hole. We 
are issuing this AD to prevent fatigue cracking of the fuselage 
skin, which could result in loss of the structural integrity of the 
fuselage and consequent rapid depressurization 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.

Modification/Investigative Action

    (f) Before the accumulation of 16,900 total flight cycles since 
first flight of the airplane: Modify the fuselage zone at the 
lavatory venturi installation area between frame (FR) 12 and FR 12A 
on the left-hand side of the nose section and do the related 
investigative action by accomplishing all the actions specified in 
the Accomplishment Instructions of Airbus Service Bulletin A300-53-
6151, Revision 01, dated April 21, 2006.

Corrective Action

    (g) If any crack is found during the inspection required by this 
AD and Airbus Service Bulletin A300-53-6151, Revision 01, dated 
April 21, 2006, specifies to contact Airbus for crack repair: Before 
further flight, repair the crack using a method approved by either 
the Manager, International Branch, ANM-116, Transport Airplane 
Directorate, FAA; or the European Aviation Safety Agency (or its 
delegated agent).

Acceptable for Compliance

    (h) Accomplishment of the actions required by paragraph (f) of 
this AD before the effective date of this AD in accordance with 
Airbus Service Bulletin A300-53-6151, dated December 2, 2005, is 
acceptable for compliance with the requirements of paragraph (f) of 
this AD.

Alternative Methods of Compliance (AMOCs)

    (i)(1) 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.
    (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

    (j) French airworthiness directive F-2006-030, dated February 1, 
2006, also addresses the subject of this AD.

Material Incorporated by Reference

    (k) You must use Airbus Service Bulletin A300-53-6151, Revision 
01, dated April 21, 2006, 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 this 
document 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 June 28, 2006.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 06-6003 Filed 7-6-06; 8:45 am]
BILLING CODE 4910-13-P