Document ID: FAA-2009-0431-0005
Agency: faa
Document Type: Rule
Title: Airworthiness Directives: Airbus Model A310 203 and  222 Airplanes and Model A300 B4 620 Airplanes
Posted Date: 2009-09-29T04:00Z

[Federal Register: September 29, 2009 (Volume 74, Number 187)]
[Rules and Regulations]               
[Page 49805-49809]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr29se09-7]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2009-0431; Directorate Identifier 2007-NM-174-AD; 
Amendment 39-16029; AD 2009-20-06]
RIN 2120-AA64

 
Airworthiness Directives; Airbus Model A310-203 and -222 
Airplanes and Model A300 B4-620 Airplanes

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

ACTION: Final rule.

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SUMMARY: We are superseding an existing airworthiness directive (AD) 
for the products listed above. This AD results from mandatory 
continuing airworthiness information (MCAI) originated by an aviation 
authority of another country to identify and correct an unsafe 
condition on an aviation product. The MCAI describes the unsafe 
condition as:

    DGAC [Direction G[eacute]n[eacute]rale de l'Aviation Civile] 
France AD 86-102-74(B) [which corresponds to FAA AD 88-06-03, 
amendment 39-5871] was issued to prevent development of damage, 
which was discovered during [a] fatigue test in the attachment 
angles of the rear pressure bulkhead (fuselage frame 80/82).

[[Page 49806]]

    Following the life extension activities linked to the A310 
program, the interval of inspection for A310-200 aircraft series was 
reduced from 12000 flight cycles (FC) to 9000 FC * * *.
    Some stress analysis conducted in the frame of the life 
extension activities of the A300-600 program leads the manufacturer 
to reduce as well the interval of inspection applicable to A300B4-
620 and A300C4-620 aircraft models.
* * * * *

The unsafe condition is cracking in the attachment angles of the rear 
pressure bulkhead, which could result in failure of the rear pressure 
bulkhead. We are issuing this AD to require actions to correct the 
unsafe condition on these products.

DATES: This AD becomes effective November 3, 2009.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of November 3, 
2009.

ADDRESSES: You may examine the AD docket on the Internet at http://
www.regulations.gov or in person at the U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC.

FOR FURTHER INFORMATION CONTACT: Tom Stafford, Aerospace Engineer, 
International Branch, ANM-116, Transport Airplane Directorate, FAA, 
1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 
227-1622; fax (425) 227-1149.

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to include an AD that would apply to the specified products. 
That NPRM was published in the Federal Register on May 7, 2009 (74 FR 
21274), and proposed to supersede AD 88-06-03, Amendment 39-5871 (53 FR 
7730, March 10, 1988). That NPRM proposed to correct an unsafe 
condition for the specified products. The MCAI states:

    DGAC [Direction G[eacute]n[eacute]rale de l'Aviation Civile] 
France AD 86-102-74(B) [which corresponds to FAA AD 88-06-03] was 
issued to prevent development of damage, which was discovered during 
[a] fatigue test in the attachment angles of the rear pressure 
bulkhead (fuselage frame 80/82).
    Following the life extension activities linked to the A310 
program, the interval of inspection for A310-200 aircraft series was 
reduced from 12000 flight cycles (FC) to 9000 FC, which prompted the 
issuance of EASA AD 2007-0157, superseding DGAC France AD 86-102-
74(B).
    Some stress analysis conducted in the frame of the life 
extension activities of the A300-600 program leads the manufacturer 
to reduce as well the interval of inspection applicable to A300B4-
620 and A300C4-620 aircraft models.
    EASA AD 2007-0297 superseded EASA AD 2007-0157, retaining for 
A310 aircraft the requirements of EASA AD 2007-0157 and requiring 
the application of Airbus Service Bulletin (SB) A300-53-6005 
Revision 4 on Airbus A300-600 aircraft, reducing the inspection 
interval from 12000 FC to 9000 FC.
    [EASA] AD [2007-0297] has been revised to remove an 
inappropriate reference regarding the normal inspection program from 
the Compliance section, Note 3.

The unsafe condition is cracking in the attachment angles of the rear 
pressure bulkhead, which could result in failure of the rear pressure 
bulkhead. The required actions include a modification of the rear 
pressure bulkhead to improve the fatigue life of the attachment angles 
at frame (FR) 80/82, and, for certain airplanes, repetitive inspections 
for cracks in the rear pressure bulkhead and repair if necessary.
    The modification includes installing additional attachment angles 
on the circumference of FR 80/82; installing a filler; installing 
additional supports between the aft pressure bulkhead and FR 80/82; 
installing an additional frame stiffener and support between the aft 
pressure bulkhead and FR 79 at stringer (STGR) 13; modifying the aft 
lavatories; applying surface protection to the modified area of the aft 
pressure bulkhead; modifying, reidentifying, and installing the heat 
and sound insulation in the area of STGR 9 and STGR 13 and between FR 
79 and FR 80/82, left and right; and for certain airplanes, doing 
related investigative and corrective actions if necessary.
    The related investigative action is doing a visual inspection 
around the entire circumference between FR 80/82 and the aft pressure 
bulkhead for damaged filler. The corrective action is removing any 
damaged filler and the adjacent area around the damage.
    You may obtain further information by examining the MCAI in the AD 
docket.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We considered the comment received.

Request To Revise Paragraph (f)(4) of the NPRM

    Airbus requests that we revise paragraph (f)(4) of the NPRM. Airbus 
states that for the airplanes identified in paragraph (f)(4) of the 
NPRM, it is not necessary to do the actions in accordance with the 
service bulletins specified in paragraph (f)(4) of the NPRM. Airbus 
further states that those airplanes are affected by Airworthiness 
Limitation Item (ALI) Task 531919-01-1A, as specified in the service 
bulletins identified in paragraph (f)(4) of this AD and the MCAI.
    We agree with the commenter. The actions specified in paragraph 
(f)(4) of the NPRM are not required for the airplanes identified in 
that paragraph because those airplanes are already inspected in 
accordance with ALI Task 531919-01-1A, and no additional actions are 
necessary. We have confirmed with EASA that this is the intent of the 
MCAI. We have removed paragraph (f)(4) of the NPRM as it is 
unnecessary, and added a new Note 1 to this AD to clarify that no 
action is required by this AD for the airplanes discussed in this 
paragraph. We have re-identified the subsequent paragraphs accordingly.

Conclusion

    We reviewed the available data, including the comments received, 
and determined that air safety and the public interest require adopting 
the AD with the changes described previously. We determined that these 
changes will not increase the economic burden on any operator or 
increase the scope of the AD.

Differences Between This AD and the MCAI or Service Information

    We have reviewed the MCAI and related service information and, in 
general, agree with their substance. But we might have found it 
necessary to use different words from those in the MCAI to ensure the 
AD is clear for U.S. operators and is enforceable. In making these 
changes, we do not intend to differ substantively from the information 
provided in the MCAI and related service information.
    We might also have required different actions in this AD from those 
in the MCAI in order to follow our FAA policies. Any such differences 
are highlighted in a NOTE within the AD.

Costs of Compliance

    We estimate that this AD will affect about 32 products of U.S. 
registry. We also estimate that it will take about 668 work-hours per 
product to comply with the basic requirements of this AD. The average 
labor rate is $80 per work-hour. Required parts will cost about $15,322 
per product. Where the service information lists required parts costs 
that are covered under warranty, we have assumed that there will be no 
charge for these costs. As we do not control warranty coverage for 
affected parties, some parties may incur costs

[[Page 49807]]

higher than estimated here. Based on these figures, we estimate the 
cost of this AD to the U.S. operators to be $2,200,384, or $68,762 per 
product.

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 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 this AD:
    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.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://
www.regulations.gov; or in person at the Docket Operations office 
between 9 a.m. and 5 p.m., Monday through Friday, except Federal 
holidays. The AD docket contains the NPRM, the regulatory evaluation, 
any comments received, and other information. The street address for 
the Docket Operations office (telephone (800) 647-5527) is in the 
ADDRESSES section. Comments will be available in the AD docket shortly 
after receipt.

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 FAA amends Sec.  39.13 by removing Amendment 39-5871 (53 FR 
7730, March 10, 1988) and adding the following new AD:

2009-20-06 Airbus: Amendment 39-16029. Docket No. FAA-2009-0431; 
Directorate Identifier 2007-NM-174-AD.

Effective Date

    (a) This airworthiness directive (AD) becomes effective November 
3, 2009.

Affected ADs

    (b) This AD supersedes AD 88-06-03, Amendment 39-5871.

Applicability

    (c) This AD applies to Airbus Model A310-203 and -222 airplanes, 
and Model A300 B4-620 airplanes; certificated in any category; all 
serial numbers except airplanes on which Airbus Modification 05526 
has been incorporated in production.

Subject

    (d) Air Transport Association (ATA) of America Code 53: 
Fuselage.

Reason

    (e) The mandatory continuing airworthiness information (MCAI) 
states:

    DGAC (Direction G[eacute]n[eacute]rale de l'Aviation Civile) 
France AD 86-102-74(B) [which corresponds to FAA AD 88-06-03, 
amendment 39-5871] was issued to prevent development of damage, 
which was discovered during [a] fatigue test in the attachment 
angles of the rear pressure bulkhead (fuselage frame 80/82).
    Following the life extension activities linked to the A310 
program, the interval of inspection for A310-200 aircraft series was 
reduced from 12000 flight cycles (FC) to 9000 FC, which prompted the 
issuance of EASA AD 2007-0157, superseding DGAC France AD 86-102-
74(B).
    Some stress analysis conducted in the frame of the life 
extension activities of the A300-600 program leads the manufacturer 
to reduce as well the interval of inspection applicable to A300B4-
620 and A300C4-620 aircraft models.
    EASA AD 2007-0297 superseded EASA AD 2007-0157, retaining for 
A310 aircraft the requirements of EASA AD 2007-0157 and requiring 
the application of Airbus Service Bulletin (SB) A300-53-6005 
Revision 4 on Airbus A300-600 aircraft, reducing the inspection 
interval from 12000 FC to 9000 FC.
    [EASA] AD [2007-0297] has been revised to remove an 
inappropriate reference regarding the normal inspection program from 
the Compliance section, Note 3.

The unsafe condition is cracking in the attachment angles of the 
rear pressure bulkhead, which could result in failure of the rear 
pressure bulkhead. The required actions include a modification of 
the rear pressure bulkhead to improve the fatigue life of the 
attachment angles at frame (FR) 80/82; applicable related 
investigative and corrective actions; and, for certain airplanes, 
repetitive inspections for cracks in the rear pressure bulkhead and 
repair if necessary.

Requirements of This AD: Actions and Compliance

    (f) Unless already done, do the following actions.

Modification

    (1) Except as required by paragraph (f)(2) of this AD: Before 
the accumulation of 12,000 total flight cycles since first flight, 
or within 1,500 flight cycles after the effective date of this AD, 
whichever occurs later, modify the aft pressure bulkhead to improve 
the fatigue life of the attachment angles at frame 80/82 and do all 
applicable related investigative and corrective actions, in 
accordance with the Accomplishment Instructions of Airbus Service 
Bulletin A300-53-6006, Revision 3, dated March 24, 1989; or Airbus 
Mandatory Service Bulletin A310-53-2025, Revision 06, dated August 
3, 2006; as applicable. Do all applicable related investigative and 
corrective actions before further flight.
    (2) For airplanes identified in paragraph (c) of AD 2006-22-03, 
amendment 39-14800: At the earlier of the compliance times specified 
in paragraphs (f)(2)(i) and (f)(2)(ii) of this AD, do the actions 
specified in paragraph (f)(1) of this AD.
    (i) Before the accumulation of 12,000 total flight cycles since 
first flight, or within 1,500 flight cycles after the effective date 
of this AD, whichever occurs later.
    (ii) At the compliance time specified in paragraph (h) of AD 
2006-22-03.

Inspections and Corrective Action

    (3) For airplanes on which the modification required by 
paragraph (f)(1) or (f)(2) of this AD is done after the accumulation 
of 6,000 total flight cycles since first flight: At the times 
specified in paragraphs (f)(3)(i) and (f)(3)(ii) of this AD, do an 
eddy current inspection for any cracking in the critical area of the 
rear pressure bulkhead between stringers 8 and 18, and repair all 
cracking before further flight, in accordance with the 
Accomplishment Instructions of Airbus Mandatory Service Bulletin 
A300-53-6005, Revision 04, dated July 18, 2007; or Airbus Mandatory 
Service Bulletin A310-53-2024, Revision 05, dated October 13, 2006; 
as applicable.

[[Page 49808]]

    (i) Before or concurrently with the modification required by 
paragraph (f)(1) or (f)(2) of this AD, as applicable; and
    (ii) Before the accumulation of 18,000 total flight cycles since 
first flight, or within 1,500 flight cycles after the effective date 
of this AD, whichever occurs later; and thereafter at intervals not 
to exceed 9,000 flight cycles.

    Note 1: For airplanes on which the modification required by 
paragraph (f)(1) or (f)(2) of this AD is done at or before the 
accumulation of 6,000 total flight cycles since first flight: No 
action is required by this AD. For these airplanes, refer to Airbus 
A300-600 ALI Task 531919-01-1A or Airbus A310 ALI Task 531919-01-1A, 
as applicable, for guidance on the normal inspection program.

    (4) Modifications done before the effective date of this AD in 
accordance with the service bulletins identified in Table 1 of this 
AD are acceptable for compliance with the requirements of paragraph 
(f)(1) and (f)(2) of this AD.

                          Table 1--Modifications Done Using Previous Service Bulletins
----------------------------------------------------------------------------------------------------------------
                                   Airbus Service
            Model--                  Bulletin--                Revision--                      Dated--
----------------------------------------------------------------------------------------------------------------
A300 B4-620 airplanes..........  A300-53-6006......  Original.....................  May 6, 1986.
                                 A300-53-6006......  1............................  September 19, 1986.
                                 A300-53-6006......  2............................  August 11, 1988.
A310-203 and -222 airplanes....  A310-53-2025......  Original.....................  April 21, 1986.
                                 A310-53-2025......  1............................  September 19, 1986.
                                 A310-53-2025......  2............................  February 16, 1987.
                                 A310-53-2025......  3............................  April 7, 1987.
                                 A310-53-2025......  4............................  October 20, 1987.
                                 A310-53-2025......  5............................  March 24, 1989.
----------------------------------------------------------------------------------------------------------------

    (5) Inspections done before the effective date of this AD in 
accordance with the service bulletins identified in Table 2 of this 
AD are acceptable for compliance with the requirements of paragraph 
(f)(3) of this AD.

                            Table 2--Inspections Done With Previous Service Bulletins
----------------------------------------------------------------------------------------------------------------
                                   Airbus Service
            Model--                  Bulletin--                Revision--                      Dated--
----------------------------------------------------------------------------------------------------------------
A300 B4-620 airplanes..........  A300-53-6005......  Original.....................  May 6, 1986.
                                 A300-53-6005......  1............................  June 20, 1986.
                                 A300-53-6005......  2............................  September 22, 1986.
                                 A300-53-6005......  3............................  April 22, 1987.
A310-203 and -222 airplanes....  A310-53-2024......  Original.....................  April 21, 1986.
                                 A310-53-2024......  1............................  June 20, 1986.
                                 A310-53-2024......  2............................  October 2, 1986.
                                 A310-53-2024......  3............................  February 17, 1987.
                                 A310-53-2024......  4............................  February 2, 1988.
----------------------------------------------------------------------------------------------------------------

    (6) Modification of the aft pressure bulkhead to improve the 
fatigue life of the attachment angles at frame (FR) 80/82 in 
accordance with paragraph (h) of AD 2006-22-03 is acceptable for 
compliance with the corresponding requirement of paragraphs (f)(1) 
and (f)(2) of this AD.

FAA AD Differences

    Note 2: This AD differs from the MCAI and/or service information 
as follows. This AD includes a compliance time specified in 
paragraph (f)(2) of this AD for airplanes that are also affected by 
AD 2006-22-03. We realize that the requirements of this AD will 
necessitate that some operators do the modification required by 
paragraph (h) of AD 2006-22-03 early. However, accomplishing the 
modification within the compliance time specified in this AD is 
required to address cracking in the attachment angles of the rear 
pressure bulkhead, which could result in failure of the rear 
pressure bulkhead.

Other FAA AD Provisions

    (g) The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, 
International Branch, ANM-116, Transport Airplane Directorate, FAA, 
has the authority to approve AMOCs for this AD, if requested using 
the procedures found in 14 CFR 39.19. Send information to ATTN: Tom 
Stafford, Aerospace Engineer, International Branch, ANM-116, 
Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, 
Washington 98057-3356; telephone (425) 227-1622; fax (425) 227-1149. 
Before using any approved AMOC on any airplane to which the AMOC 
applies, notify your principal maintenance inspector (PMI) or 
principal avionics inspector (PAI), as appropriate, or lacking a 
principal inspector, your local Flight Standards District Office.
    (2) Airworthy Product: For any requirement in this AD to obtain 
corrective actions from a manufacturer or other source, use these 
actions if they are FAA-approved. Corrective actions are considered 
FAA-approved if they are approved by the State of Design Authority 
(or their delegated agent). You are required to assure the product 
is airworthy before it is returned to service.
    (3) Reporting Requirements: For any reporting requirement in 
this AD, under the provisions of the Paperwork Reduction Act, the 
Office of Management and Budget (OMB) has approved the information 
collection requirements and has assigned OMB Control Number 2120-
0056.

Related Information

    (h) Refer to MCAI EASA Airworthiness Directive 2007-0297R1, 
dated September 17, 2008, and the service bulletins listed in Table 
3 of this AD, for related information.

                   Table 3--Related Service Bulletins
------------------------------------------------------------------------
   Airbus Service Bulletin       Revision                Date
------------------------------------------------------------------------
Airbus Mandatory Service                  04  July 18, 2007.
 Bulletin A300-53-6005.
Airbus Mandatory Service                  05  October 13, 2006.
 Bulletin A310-53-2024.
Airbus Mandatory Service                  06  August 3, 2006.
 Bulletin A310-53-2025.

[[Page 49809]]

Airbus Service Bulletin A300-              3  March 24, 1989.
 53-6006.
------------------------------------------------------------------------

Material Incorporated by Reference

    (i) You must use the service information contained in Table 4 of 
this AD to do the actions required by this AD, unless the AD 
specifies otherwise.

               Table 4--Material Incorporated by Reference
------------------------------------------------------------------------
   Airbus Service Bulletin       Revision                Date
------------------------------------------------------------------------
Airbus Mandatory Service                  04  July 18, 2007.
 Bulletin A300-53-6005.
Airbus Mandatory Service                  05  October 13, 2006.
 Bulletin A310-53-2024.
Airbus Mandatory Service                  06  August 3, 2006.
 Bulletin A310-53-2025.
Airbus Service Bulletin A300-              3  March 24, 1989.
 53-6006.
------------------------------------------------------------------------

    Airbus Service Bulletin A300-53-6006, Revision 3, dated March 
24, 1989, contains the following effective pages:

------------------------------------------------------------------------
                              Revision level
          Page Nos.            shown on page      Date shown on page
------------------------------------------------------------------------
1, 29, 47, 48...............               3   March 24, 1989.
2-28, 30-46, 49-52..........               2   August 11, 1988.
------------------------------------------------------------------------

    (1) The Director of the Federal Register approved the 
incorporation by reference of this service information under 5 
U.S.C. 552(a) and 1 CFR part 51.
    (2) For service information identified in this AD, contact 
Airbus SAS--EAW (Airworthiness Office), 1 Rond Point Maurice 
Bellonte, 31707 Blagnac Cedex, France; telephone +33 5 61 93 36 96; 
fax +33 5 61 93 44 51; e-mail: account.airworth-eas@airbus.com; 
Internet http://www.airbus.com.
    (3) You may review copies of the service information at the FAA, 
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, 
Washington. For information on the availability of this material at 
the FAA, call 425-227-1221 or 425-227-1152.
    (4) You may also review copies of the service information that 
is incorporated by reference at the National Archives and Records 
Administration (NARA). For information on the availability of this 
material at 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 September 16, 2009.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E9-23094 Filed 9-28-09; 8:45 am]

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