[Federal Register Volume 71, Number 235 (Thursday, December 7, 2006)]
[Rules and Regulations]
[Pages 70865-70868]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E6-20616]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2006-25423; Directorate Identifier 2006-NM-029-AD; 
Amendment 39-14845; AD 2006-25-04]
RIN 2120-AA64


Airworthiness Directives; Airbus Model A300 Airplanes

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

ACTION: Final rule.

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SUMMARY: The FAA is superseding an existing airworthiness directive 
(AD), which applies to all Airbus Model A300 airplanes. That AD 
currently requires repetitive inspections for cracking and corrosion in 
the lower rim area of the rear pressure bulkhead and adjacent areas, 
repetitive inspections for cracking or corrosion in the service 
apertures and the upper rim area of the rear pressure bulkhead, and 
corrective actions if necessary. This new AD removes certain repetitive 
inspections and reduces the repetitive interval of one inspection. This 
new AD also requires an inspection for missing or damaged sealant in 
the area between the outer attachment angle and circumferential joint 
doubler, and corrective action if necessary. This new AD also requires 
additional inspections for corrosion of certain areas and repetitive 
inspections for airplanes on which repairs have been done. This AD 
results from reports of corrosion and cracking in the various 
components associated with the rear pressure bulkhead. We are issuing 
this AD to prevent reduced structural capability of the fuselage and 
consequent decompression of the airplane.

DATES: This AD becomes effective January 11, 2007.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of January 11, 
2007.

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: Thomas Stafford, Aerospace Engineer, 
International Branch, ANM-116, FAA, Transport Airplane Directorate, 
1601 Lind Avenue, SW., Renton, Washington 98057-3356; 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 am and 5 pm, 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 supersedes AD 90-03-08, amendment 39-
6481 (55 FR 1799, January 19, 1990). The existing AD applies to all 
Airbus Model A300 series airplanes. That NPRM was published in the 
Federal Register on August 1, 2006 (71 FR 43386). That NPRM proposed to 
continue to require repetitive inspections for cracking and corrosion 
in the lower rim area of the rear pressure bulkhead and adjacent areas, 
repetitive inspections for cracking or corrosion in the service 
apertures and the upper rim area of the rear pressure bulkhead, and 
corrective actions if necessary. That NPRM also proposed to remove 
certain repetitive inspections and reduce the repetitive interval of 
one inspection. That NPRM also proposed to require an inspection for 
missing or damaged sealant in the area between the outer attachment 
angle and circumferential joint doubler, and corrective action if 
necessary. That NPRM also proposed to require additional inspections 
for corrosion of certain areas and repetitive inspections for airplanes 
on which repairs have been done.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We have considered the comments that have been 
received on the NPRM.

Request To Refer to Latest Issue of the Service Bulletin and Revise 
Compliance Time

    Airbus requests that Service Bulletin A300-53-0218, Revision 03, 
dated August 3, 2006, be referenced in the NPRM. (Airbus Service 
Bulletin A300-53-0218, Revision 02, dated May 10, 2005, was referenced 
as the appropriate source of service information for doing the actions 
specified in the NPRM.) Airbus also states that the compliance time for 
doing the repetitive sealant inspection has been revised from 6,000 
landings to 8,000 landings to match the compliance times specified in 
French airworthiness directive F-2005-093 R1, dated August 3, 2005 
(which was referenced in the NPRM as the related French airworthiness 
directive).
    We agree with the commenter to refer to Revision 03 of the service 
bulletin. Revision 03 of the service bulletin contains essentially the 
same procedures as Revision 02 of the service bulletin for doing the 
actions specified the NPRM. We have revised the final rule accordingly. 
We have also added paragraph (o) of the final rule to allow actions 
done before the effective date of this AD in accordance with Revision 
02 of the service bulletin to be acceptable for compliance.
    We also agree to revise the compliance time of the repetitive 
sealant inspection. The French airworthiness directive specifies that 
the repetitive interval is 8,000 landings for the upper part of rear 
pressure bulkhead surrounding area. The sealant inspection is done on 
the aft face of the rear pressure bulkhead. Therefore we have revised 
paragraph (i) of this final rule accordingly.

Request To Change Incorporation of Certain Information

    The Modification and Replacement Parts Association (MARPA) states 
that, typically, airworthiness directives are based on service 
information originating with the type certificate holder or its 
suppliers. MARPA adds that manufacturer service documents are privately 
authored instruments generally having copyright protection against 
duplication and distribution. MARPA notes that when a service document 
is incorporated by reference into a public document, such as an 
airworthiness directive, it loses its private, protected status and 
becomes a public document. MARPA adds that if a service document is 
used as a mandatory element of compliance, it should not simply be 
referenced, but should be incorporated into the regulatory document; by 
definition,

[[Page 70866]]

public laws must be public, which means they cannot rely upon private 
writings.
    MARPA adds that incorporated by reference service documents should 
be made available to the public by publication in the Docket Management 
System (DMS), keyed to the action that incorporates them. MARPA notes 
that the stated purpose of the incorporation by reference method is 
brevity, to keep from expanding the Federal Register needlessly by 
publishing documents already in the hands of the affected individuals; 
traditionally, ``affected individuals'' means aircraft owners and 
operators, who are generally provided service information by the 
manufacturer. MARPA adds that a new class of affected individuals has 
emerged, since the majority of aircraft maintenance is now performed by 
specialty shops instead of aircraft owners and operators. MARPA notes 
that this new class includes maintenance and repair organizations, 
component servicing and repair shops, parts purveyors and distributors, 
and organizations manufacturing or servicing alternatively certified 
parts under section 21.303 (``Replacement and modification parts'') of 
the Federal Aviation Regulations (14 CFR 21.303). MARPA adds that the 
concept of brevity is now nearly archaic as documents exist more 
frequently in electronic format than on paper. Therefore, MARPA asks 
that the service documents deemed essential to the accomplishment of 
the NPRM be incorporated by reference into the regulatory instrument 
and published in the DMS.
    We do not agree that documents should be incorporated by reference 
during the NPRM phase of rulemaking. The Office of the Federal Register 
(OFR) requires that documents that are necessary to accomplish the 
requirements of the AD be incorporated by reference during the final 
rule phase of rulemaking. This final rule incorporates by reference the 
documents necessary for the accomplishment of the requirements mandated 
by this AD. Further, we point out that while documents that are 
incorporated by reference do become public information, they do not 
lose their copyright protection. For that reason, we advise the public 
to contact the manufacturer to obtain copies of the referenced service 
information.
    In regard to the commenter's request to post service bulletins on 
the Department of Transportation's DMS, we are currently in the process 
of reviewing issues surrounding the posting of service bulletins on the 
DMS as part of an AD docket. Once we have thoroughly examined all 
aspects of this issue and have made a final determination, we will 
consider whether our current practice needs to be revised. No change to 
the final rule is necessary in response to this comment.

Clarification of Requirements of Paragraph (f)(2) of the Final Rule

    We have added the phrase ``as applicable'' to paragraph (f)(2) of 
the final rule to clarify that the actions specified in paragraph 
(f)(2)(i) and (f)(2)(ii) of the final rule are required to be done only 
for the applicable airplanes identified in paragraphs (f)(2)(i) and 
(f)(2)(ii) of the final rule. We have also added the word ``inclusive'' 
to the range of manufacturer serial numbers specified in paragraphs 
(f)(2)(i) and (f)(2)(ii) of the final rule in order to clarify the 
range of the applicable airplanes.

Clarification of Reference in Paragraph (h)(5) of the Final Rule

    We made a typographical error in paragraph (h)(5) of the NPRM when 
we referred to paragraphs (g)(5)(i) and (g)(5)(ii). The correct 
paragraph reference is (h)(5)(i) and (h)(5)(ii). We have revised 
paragraph (h)(5) of the final rule accordingly.

Conclusion

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

Costs of Compliance

    The following table provides the estimated costs for U.S. operators 
to comply with this AD.

                                                                     Estimated Costs
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                                                                                                   Number of
                                  Work     Average                                                   U.S.-
            Action               hours    labor rate               Cost per airplane               registered                  Fleet cost
                                           per hour                                                airplanes
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Inspections (required by AD 90-      10          $80  $800, per inspection cycle................           51  $40,800, per inspection cycle.
 03-08).
New Inspections (required by         10           80  $800, per inspection cycle................           51  $40,800, per inspection cycle.
 this AD).
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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.

[[Page 70867]]

    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 
removing amendment 39-6481 (55 FR 1799, January 19, 1990) and by adding 
the following new airworthiness directive (AD):

2006-25-04 Airbus: Amendment 39-14845. Docket No. FAA-2006-25423; 
Directorate Identifier 2006-NM-029-AD.

Effective Date

    (a) This AD becomes effective January 11, 2007.

Affected ADs

    (b) This AD supersedes AD 90-03-08.

Applicability

    (c) This AD applies to all Airbus Model A300 airplanes, 
certificated in any category; except the following airplanes:
    (1) Model A300 B4-601, B4-603, B4-620, and B4-622 airplanes;
    (2) Model A300 B4-605R and B4-622R airplanes;
    (3) Model A300 F4-605R and F4-622R airplanes; and
    (4) Model A300 C4-605R Variant F airplanes.

Unsafe Condition

    (d) This AD results from reports of corrosion and cracking in 
the various components associated with the rear pressure bulkhead. 
We are issuing this AD to prevent reduced structural capability of 
the fuselage and consequent decompression 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.

Restatement of Certain Requirements of Ad 90-03-08 With New Repetitive 
Intervals

Initial Inspections

    (f) Within the time limits specified in paragraph (g) of this 
AD, conduct the inspections specified in paragraphs (f)(1) through 
(f)(4) of this AD in accordance with Airbus Service Bulletin A300-
53-218, Revision 1, dated July 28, 1989; or Airbus Service Bulletin 
A300-53-0218, Revision 03, dated August 3, 2006. After the effective 
date of this AD, Airbus Service Bulletin A300-53-0218, Revision 03, 
dated August 3, 2006, must be used.
    (1) Perform a detailed inspection for corrosion and cracking of 
the upper rim area of the rear pressure bulkhead from the aft face.


    Note 1: For the purposes of this AD, a detailed inspection is: 
``An intensive examination of a specific item, installation, or 
assembly to detect damage, failure, or irregularity. Available 
lighting is normally supplemented with a direct source of good 
lighting at an intensity deemed appropriate. Inspection aids such as 
mirror, magnifying lenses, etc., may be necessary. Surface cleaning 
and elaborate procedures may be required.''


    (2) Perform an eddy current inspection for cracks from the 
outboard side in the applicable areas specified in paragraph 
(f)(2)(i) or (f)(2)(ii) of this AD, as applicable.
    (i) For airplanes, manufacturer's serial number (MSN) 003 
through 008 inclusive: Between Stringer (STGR) 25 left hand (LH) and 
right hand (RH).
    (ii) For airplanes, MSN 019 through 305 inclusive: Between STGR 
26 LH and RH.
    (3) Perform a detailed inspection for cracks and corrosion of 
the service apertures in the rear pressure bulkhead.
    (4) Perform an eddy current inspection for cracks of the 
apertures for the auxiliary power unit (APU) bleed-air and fuel.
    (g) At the applicable time specified in paragraph (g)(1) or 
(g)(2) of this AD, do the inspections required by paragraph (f) of 
this AD.
    (1) For airplanes having accumulated 26,000 landings or fewer as 
of February 23, 1990 (the effective date of AD 90-03-08): Perform 
the initial inspections required by paragraph (f) of this AD, prior 
to the accumulation of 24,000 landings or within 2,000 landings 
after February 23, 1990, whichever occurs later.
    (2) For airplanes having accumulated more than 26,000 landings 
as of February 23, 1990: Perform the initial inspections required by 
paragraph (f) of this AD, within 1,000 landings after February 23, 
1990.

Repetitive Inspections

    (h) If no cracking or corrosion is found during the inspections 
required by paragraph (f) of this AD, repeat the inspections 
specified in paragraphs (h)(1), (h)(2), (h)(3), (h)(4), and (h)(5) 
of this AD thereafter at the times specified in the paragraphs.
    (1) Repeat the detailed inspections of the upper rim area 
specified in paragraph (f)(1) of this AD thereafter at intervals not 
to exceed 8,000 landings.
    (2) Repeat the eddy current inspection from the outboard side 
between STGR 25 LH and RH, or STGR 26 LH and RH, as applicable, 
specified in paragraph (f)(2) of this AD thereafter at intervals not 
to exceed 8,000 landings.
    (3) Repeat the detailed inspection of the service apertures 
specified in paragraph (f)(3) of this AD thereafter at intervals not 
to exceed 6,000 landings.
    (4) Repeat eddy current inspections of APU fuel apertures 
specified in paragraph (f)(4) of this AD thereafter at intervals not 
to exceed 6,000 landings.
    (5) At the earlier of the times specified in paragraphs 
(h)(5)(i) and (h)(5)(ii) of this AD, do the eddy current inspection 
of the APU bleed-air line service aperture specified in paragraph 
(f)(4) of this AD. Repeat the inspection thereafter at intervals not 
to exceed 6,000 landing.
    (i) Within 12,000 landings since the last inspection of the APU 
bleed-air line service aperture specified in paragraph (f)(4) of 
this AD.
    (ii) Within 6,000 landings since the last inspection of the APU 
bleed-air line service aperture specified in paragraph (f)(4) of 
this AD or within 2,000 landings after the effective date of this 
AD, whichever occurs later.

New Requirements of This AD

Inspection for Sealant and Corrective Action

    (i) Within the time limits specified in paragraph (j) of this 
AD: Do a general visual inspection of the area between the outer 
attachment angle and circumferential joint doubler to determine if 
sealant is missing or damaged and do all applicable corrective 
actions, in accordance with the Accomplishment Instructions of 
Airbus Service Bulletin A300-53-0218, Revision 03, dated August 3, 
2006. Do all applicable corrective actions before further flight. 
Repeat the inspection thereafter at intervals not to exceed 8,000 
landings.


    Note 2: 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.''


    (j) At the applicable time specified in paragraph (j)(1) or 
(j)(2) of this AD, do the inspections required by paragraph (i) of 
this AD.
    (1) For airplanes having accumulated 26,000 landings or fewer as 
of the effective date of this AD: Perform the initial inspection 
required by paragraph (i) of this AD prior to the accumulation of 
24,000 landings, or within 2,000 landings after the effective date 
of this AD, whichever occurs later.
    (2) For airplanes having accumulated more than 26,000 landings 
as of the effective date

[[Page 70868]]

of this AD: Perform the initial inspection required by paragraph (i) 
of this AD within 1,000 landings after the effective date of this 
AD.

Additional Inspections

    (k) For airplanes on which the inspections specified in 
paragraphs (f)(2), (f)(4), (h)(2), and (h)(4) of this AD are 
accomplished after the effective date of this AD: Where this AD 
requires an eddy current inspection for cracks, do a detailed 
inspection for corrosion at the same time as the eddy current 
inspection for cracks, in accordance with the Accomplishment 
Instructions of Airbus Service Bulletin A300-53-0218, Revision 03, 
dated August 3, 2006.
    (l) For airplanes on which the inspections specified in 
paragraphs (f)(2) and (h)(2) of this AD are accomplished after the 
effective date of this AD: If any crack is found during any 
inspection required by paragraph (f)(2) or (h)(2), before further 
flight, do an X-ray inspection for cracking of the rim area of the 
rear pressure bulkhead in the area of STGR 21 LH and RH in 
accordance with the Accomplishment Instructions of Airbus Service 
Bulletin A300-53-0218, Revision 03, dated August 3, 2006.

New Repetitive Inspections

    (m) For airplanes on which a repair has been done in accordance 
with Airbus Service Bulletin A300-53-218, Revision 1, dated July 28, 
1989; Airbus Service Bulletin A300-53-0218, Revision 02, dated May 
10, 2005; or Revision 03, dated August 3, 2006; before the effective 
date of this AD: At the later of the times specified in paragraphs 
(m)(1) and (m)(2) of this AD, do the inspections specified in 
paragraphs (h), (k), and (l) of this AD. Repeat the inspections 
specified in paragraphs (h), (k), and (l) of this AD thereafter at 
the applicable times specified in paragraph (h) of this AD.
    (1) Within the times specified in paragraph (h) of this AD.
    (2) Within 2,000 landings after the effective date of this AD.

Corrective Actions for Cracking and Corrosion and Repetitive 
Inspections

    (n) If cracking or corrosion is found during any inspection 
required by paragraph (f), (h), (k), (l) or (m) of this AD, repair 
prior to further flight, in accordance with the Accomplishment 
Instructions of Airbus Service Bulletin A300-53-218, Revision 1, 
dated July 28, 1989; or Airbus Service Bulletin A300-53-0218, 
Revision 03, dated August 3, 2006. As of the effective date of this 
AD, do the repair in accordance with the Accomplishment Instructions 
of Airbus Service Bulletin A300-53-0218, Revision 03, dated August 
3, 2006; except where the service bulletin specifies to contact the 
manufacturer to repair certain conditions, this AD requires 
repairing those conditions using a method approved by either the 
Manager, International Branch, ANM-116, Transport Airplane 
Directorate, FAA; or the European Aviation Safety Agency (EASA) (or 
its delegated agent). As of the effective date of this AD, repeat 
the inspections specified in paragraphs (h), (k), and (l) of this AD 
thereafter at the applicable times specified in paragraph (h) of 
this AD.

Actions Accomplished According to Previous Issue of Service 
Bulletin

    (o) Actions accomplished before the effective date of this AD in 
accordance with Airbus Service Bulletin A300-53-0218, Revision 02, 
dated May 10, 2005, are considered acceptable for compliance with 
the corresponding actions specified in this AD.

Alternative Methods of Compliance (AMOCs)

    (p)(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.
    (3) AMOCs approved previously in accordance with AD 90-03-08 are 
not approved as AMOCs with this AD.

Related Information

    (q) French airworthiness directive F-2005-093 R1, dated August 
3, 2005, also addresses the subject of this AD.

Material Incorporated by Reference

    (r) You must use Airbus Service Bulletin A300-53-218, Revision 
1, dated July 28, 1989; and Airbus Service Bulletin A300-53-0218, 
Revision 03, dated August 3, 2006; as applicable; to perform the 
actions that are required by this AD, unless the AD specifies 
otherwise. Airbus Service Bulletin A300-53-218, Revision 1, dated 
July 28, 1989, contains the following effective pages:

------------------------------------------------------------------------
                                Revision level
          Page Nos.             shown on page      Date shown on page
------------------------------------------------------------------------
1-4, 7, 8, 16, 19-25.........  Revision 1.....  July 28, 1989.
5, 6, 9-15, 17, 18...........  Original.......  February 20, 1989.
------------------------------------------------------------------------

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 November 20, 2006.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
 [FR Doc. E6-20616 Filed 12-6-06; 8:45 am]
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