[Federal Register Volume 69, Number 93 (Thursday, May 13, 2004)]
[Rules and Regulations]
[Pages 26494-26498]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 04-10245]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2000-NM-145-AD; Amendment 39-13618; AD 2004-09-28]
RIN 2120-AA64


Airworthiness Directives; Lockheed Model L-1011 Series Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule.

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SUMMARY: This amendment supersedes an existing airworthiness directive 
(AD), applicable to all Lockheed Model L-1011 series airplanes, that 
currently requires the implementation of a corrosion prevention and 
control program either by accomplishing specific tasks or by revising 
the maintenance inspection program to include such a program. This 
action

[[Page 26495]]

requires accomplishment of new specific tasks and visual inspections 
for corrosion of certain structural areas and repair if necessary, or 
revision of the maintenance inspection program. This amendment relates 
to the recommendations of the Airworthiness Assurance Task Force 
assigned to review Model L-1011 series airplanes, which indicate that, 
to ensure long-term continued operational safety, various structural 
inspections should be accomplished. The actions specified by this AD 
are intended to prevent structural failure of the airplane due to 
corrosion.

DATES: Effective June 17, 2004.
    The incorporation by reference of Lockheed Document Number LR 
31889, ``Corrosion Prevention and Control Program, TriStar L-1011,'' 
including Revision D, Appendices A, B, C, and D, dated August 15, 1999, 
as listed in the regulations, is approved by the Director of the 
Federal Register as of June 17, 2004.
    The incorporation by reference of Lockheed Document Number LR 
31889, ``Corrosion Prevention and Control Program, TriStar L-1011,'' 
dated March 15, 1991, including ``Errata Sheet, LR 31889, Corrosion 
Prevention and Control Program, TriStar L-1011,'' issued September 29, 
1992; as listed in the regulations, was approved previously by the 
Director of the Federal Register as of December 17, 1993 (58 FR 60775, 
November 18, 1993).

ADDRESSES: The service information referenced in this AD may be 
obtained from Lockheed Martin Aircraft & Logistics Centers, 120 Orion 
Street, Greenville, South Carolina 29605. This information may be 
examined at the Federal Aviation Administration (FAA), Transport 
Airplane Directorate, Rules Docket, 1601 Lind Avenue, SW., Renton, 
Washington; or at the FAA, Atlanta Aircraft Certification Office, One 
Crown Center, 1895 Phoenix Boulevard, suite 450, Atlanta, Georgia; or 
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.

FOR FURTHER INFORMATION CONTACT: Carl Gray, Aerospace Engineer, 
Airframe and Propulsion Branch, ACE-117A, FAA, Atlanta Aircraft 
Certification Office, One Crown Center, 1895 Phoenix Boulevard, suite 
450, Atlanta, Georgia 30349; telephone (770) 703-6031; fax (770) 703-
6097.

SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal 
Aviation Regulations (14 CFR part 39) by superseding AD 93-20-03, 
amendment 39-8710 (58 FR 60775, November 18, 1993), which is applicable 
to all Lockheed Model L-1011 series airplanes, was published in the 
Federal Register on April 25, 2001 (66 FR 20760). The action proposed 
to continue to require visual inspections, and repair if necessary, of 
certain structures, or a revision of the FAA-approved maintenance 
inspection program, as required by AD 93-20-03. The action also 
proposed to require accomplishment of various visual inspections for 
corrosion of certain structures, and repair, if necessary; or 
incorporation of Revision D of Lockheed Document Number LR 31889, 
``Corrosion Prevention and Control Program, TriStar L-1011,'' dated 
August 15, 1999 (``the Document''), into the FAA-approved maintenance 
inspection program.

Comments

    Interested persons have had an opportunity to participate in the 
making of this amendment. Due consideration has been given to the 
comments received. The sole commenter, the manufacturer, requests that 
certain paragraphs of the proposed AD be revised to correct and to 
convey the intent of the AD.

Request To Revise Paragraph (c)(1)

    The commenter suggests rewording paragraph (c)(1) of the proposed 
AD as follows:
    (1) Accomplish corrosion tasks C-55-320-05 Note 4 and C-55-330-05 
Note 1, per Revision D of the Document. Thereafter, accomplish these 
corrosion tasks at intervals not to exceed 5 years.

The commenter contends that the proposed AD did not specify the 
affected Notes of the tasks, and would therefore require the whole task 
to be repeated at intervals of 5 years. The commenter explains that 
Note 4 to task C-55-320-05 was revised in Revision A of the Document to 
require bolt removal for inspection; the rest of this task is required 
by AD 93-20-03.

    We agree with the request, for the reasons provided by the 
commenter. Although AD 93-20-03 is superseded by this AD, its 
requirements are restated in paragraphs (a) and (b) of this AD. 
Paragraph (c)(1) of this final rule has been revised accordingly.

Request To Revise Paragraph (c)(2)

    The commenter suggests rewording paragraph (c)(2) of the proposed 
AD as follows:
    (2) Accomplish corrosion task C-57-540-02 Note 5 per Revision D of 
the Document. Thereafter, accomplish this corrosion task at intervals 
not to exceed 5 years.

Again, the proposed AD did not specify the affected Note in paragraph 
(c)(2). The commenter explains that, based on operator experience, the 
Structures Working Group (SWG) approved changing the repetitive 
interval in Note 5 from 10 years to 5 years; this change became 
effective in Revision B of the Document. As written, the proposed AD 
would also affect the other notes of the task; as a result, the Note 3 
task would be required at 5-year intervals instead of the desired 2.5-
year intervals.
    We agree with the request, for the reasons provided by the 
commenter and as discussed previously. Paragraph (c)(2) of this final 
rule has been revised accordingly.

Request To Revise Paragraph (c)(3)

    The commenter suggests rewording paragraph (c)(3) of the proposed 
AD as follows:
    (3) Accomplish corrosion task C-57-530-04 Note 3 per revision D of 
the Document. Thereafter, accomplish this corrosion task at intervals 
not to exceed 5 years.

Without reference to Note 3 in paragraph (c)(3), the proposed AD would 
require repetition of all actions of the task within 5-year intervals. 
The commenter explains that Note 3 was added in Revision B of the 
Document to address the upper wing access panels in the zones for this 
task. The rest of task C-57-530-04 is required by AD 93-20-03.

    We agree with the request, for the reasons provided by the 
commenter and as discussed previously. Although AD 93-20-03 is 
superseded by this AD, its requirements are restated in paragraphs (a) 
and (b) of this AD. It is therefore necessary only to refer to Note 3 
in paragraph (c). Paragraph (c)(3) of this final rule has been revised 
accordingly.

Request To Revise Paragraph (d)

    The commenter requests that paragraph (d) of the proposed AD be 
revised as follows:
    (d) . . . ., in accordance with the procedures specified in Task C-
55-350-01 Note 1 of Revision D of the Document. Thereafter, repeat this 
inspection at intervals not to exceed 15 years.

The commenter explains that inspection of the stabilizer bearing within 
15-year intervals is required by Note 1 of the task, per Revision D of 
the Document.

[[Page 26496]]

The rest of the task is required by AD 93-20-03.
    We agree with the request for the reasons provided by the commenter 
and as discussed previously. Paragraph (d) of this final rule has been 
revised accordingly.

Request To Revise Paragraph (j)

    The commenter requests that paragraph (j) of the proposed AD be 
revised to refer to Revision ``D'' (instead of Revision ``4'') of the 
Document. The commenter considers this a typographical error. We agree. 
This final rule has been revised accordingly.

Explanation of Change to Existing Requirements

    The FAA has changed all references to a ``detailed visual 
inspection'' in the existing AD to ``detailed inspection'' in this 
action.

Conclusion

    After careful review of the available data, including the comments 
noted above, we have determined that air safety and the public interest 
require the adoption of the rule with the changes previously described. 
We have determined that these changes will neither increase the 
economic burden on any operator nor increase the scope of the AD.

Cost Impact

    There are approximately 187 Lockheed Model L-1011 series airplanes 
of the affected design in the worldwide fleet. We estimate that 117 
airplanes of U.S. registry will be affected by this AD.
    The actions that are currently required by AD 93-20-03 take about 
20 work hours per inspection to accomplish, at an average labor rate of 
$65 per work hour. Based on these figures, the cost impact of the 
currently required actions on U.S. operators is estimated to be 
$152,100, or $1,300 per airplane, per inspection cycle.
    The new visual inspections required by this AD will take about 249 
work hours per airplane to accomplish, at an average labor rate of $65 
per work hour. Based on these figures, the cost impact of the new 
requirements of this AD on U.S. operators is estimated to be 
$1,893,645, or $16,185 per airplane.
    Revising the maintenance inspection program, if accomplished, would 
take about 1 work hour per airplane, at an average labor rate of $65 
per work hour. Based on these figures, the cost impact of this action 
is estimated to be $65 per airplane.
    The cost impact figures discussed above are based on assumptions 
that no operator has yet accomplished any of the requirements of this 
AD, and that no operator would accomplish those actions in the future 
if this AD were not adopted. The cost impact figures 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 adopted herein 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. Therefore, it 
is determined that this final rule does not have federalism 
implications under Executive Order 13132.
    For the reasons discussed above, I certify that this action (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. A final evaluation has been prepared for this action 
and it is contained in the Rules Docket. A copy of it may be obtained 
from the Rules Docket at the location provided under the caption 
ADDRESSES.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, pursuant to the authority delegated to me by the 
Administrator, the Federal Aviation Administration amends part 39 of 
the Federal Aviation Regulations (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. Section 39.13 is amended by removing amendment 39-8710 (58 FR 60775, 
November 18, 1993), and by adding a new airworthiness directive (AD), 
amendment 39-13618, to read as follows:

2004-09-28 Lockheed: Amendment 39-13618. Docket 2000-NM-145-AD. 
Supersedes AD 93-20-03, Amendment 39-8710.

    Applicability: All Model L-1011 series airplanes, certificated 
in any category.
    Compliance: Required as indicated, unless accomplished 
previously.
    To prevent structural failure of the airplane due to corrosion, 
accomplish the following:

Restatement of the Requirements of AD 93-20-03:

    Note 1: This AD refers to Lockheed Document Number LR 31889, 
``Corrosion Prevention and Control Program, TriStar L-1011,'' dated 
March 15, 1991, including ``Errata Sheet, LR 31889, Corrosion 
Prevention and Control Program, TriStar L-1011,'' issued September 
29, 1992; and Revision D, dated August 15, 1999 (hereafter, those 
publications are referred to as ``the Document''), for corrosion 
tasks, definitions of corrosion levels, compliance times, and 
reporting requirements. In addition, this AD specifies inspection 
and reporting requirements beyond those included in the Document. 
Where there are differences between the AD and the Document, the AD 
prevails.


    Note 2: As used throughout this AD, the term ``the FAA'' is 
defined differently for different operators, as follows: For those 
operators complying with paragraph (a) or (c) of this AD, ``the 
FAA'' is defined as ``the Manager of the Atlanta Aircraft 
Certification Office (ACO).'' For those operators operating under 14 
CFR Part 121 or 129, and complying with paragraph (b) or (d) of this 
AD, ``the FAA'' is defined as ``the cognizant Maintenance Inspector 
at the appropriate FAA Flight Standards office.''

Corrosion Tasks

    (a) Except as provided in paragraph (b) of this AD, complete 
each of the corrosion tasks specified in Section 4 of the Document 
in accordance with the procedures of the Document, and the schedule 
specified in paragraphs (a)(1) and (a)(2) of this AD. Corrosion task 
numbers C-32-710-01 (nose landing gear) and C-32-730-01 (main 
landing gear, left and right) are not required to be accomplished as 
part of this AD.

    Note 3: A ``corrosion task,'' as defined in Section 4 of the 
Document, includes inspections; procedures for a corrective action, 
including repairs, under identified circumstances; application of 
corrosion inhibitors; and other follow-on actions.


    Note 4: Corrosion tasks completed in accordance with the 
Document before the effective date of this AD may be credited for 
compliance with the initial corrosion task requirements of paragraph 
(a)(1) of this AD.


    Note 5: Where non-destructive inspection (NDI) methods are 
employed, in accordance with Section 4 of the Document, the 
standards and procedures used must be acceptable to the 
Administrator in accordance with 14 CFR 43.13.


[[Page 26497]]


    (1) Complete the initial corrosion task of each ``airplane 
area'' specified in Section 4 of the Document as follows:
    (i) For airplane areas that have not yet exceeded the 
``implementation age'' (IA) for a corrosion task as of one year 
after December 17, 1993 (the effective date of AD 93-20-03, 
amendment 39-8710): Initial compliance must occur no later than the 
IA plus the repeat (R) interval.
    (ii) For airplane areas that have exceeded the IA for a 
particular corrosion task, as of one year after December 17, 1993: 
Initial compliance must occur within one R interval for that task, 
measured from a date one year after December 17, 1993.
    (iii) For airplanes that have reached or exceeded 20 years after 
the date of manufacture as of one year after December 17, 1993: 
Initial compliance must occur for each corrosion task within one R 
interval for that task, but not to exceed 6 years, measured from a 
date one year after December 17, 1993, whichever occurs first.
    (iv) Notwithstanding paragraph (a)(1)(i), (a)(1)(ii), or 
(a)(1)(iii) of this AD, for airplane areas that exceed the IA for 
that area, the operator must accomplish the initial corrosion task 
for each such area at a minimum rate equivalent to one such area per 
year, beginning one year after December 17, 1993.

    Note 6: This paragraph does not require inspection of any area 
that has not exceeded the IA for that area.


    Note 7: This minimum rate requirement may cause an undue 
hardship on some small operators. In those circumstances, requests 
for adjustments to the implementation rate will be evaluated on a 
case-by-case basis under the provisions of paragraph (h) of this AD.

    (2) Repeat each corrosion task at a time interval not to exceed 
the R interval specified in the Document for that task.
    (b) As an alternative to the requirements of paragraph (a) of 
this AD: Prior to one year after December 17, 1993, revise the FAA-
approved maintenance inspection program to include the corrosion 
prevention and control program specified in the Document; or to 
include an equivalent program that is approved by the FAA. In all 
cases, the initial corrosion task for each airplane area must be 
completed in accordance with the compliance schedule specified in 
paragraph (a)(1) of this AD. Corrosion task numbers C-32-710-01 
(nose landing gear) and C-32-730-01 (main landing gear, left and 
right) are not required to be accomplished as part of this AD.
    (1) Any operator complying with paragraph (b) of this AD may use 
an alternative recordkeeping method to that otherwise required by 14 
CFR 91.417 or 121.380 for the actions required by this AD, provided 
it is approved by the FAA and is included in a revision to the FAA-
approved maintenance inspection program.
    (2) Subsequent to the accomplishment of the initial corrosion 
task, extensions of R intervals specified in the Document must be 
approved by the FAA.

New Requirements of This AD

    (c) Except as provided in paragraph (e) of this AD, within 5 
years after the effective date of this AD: Complete each of the 
corrosion tasks at the times specified in paragraphs (c)(1), (c)(2), 
(c)(3), and (c)(4) of this AD in accordance with the procedures 
specified in the Document. (Corrosion tasks number C-32-710-01 (nose 
landing gear) and C-32-730-01 (main landing gear, left and right) 
are not required to be accomplished as part of this AD.)

    Note 8: A ``corrosion task,'' as defined in Section 4 of the 
Document, includes inspections; procedures for a corrective action, 
including repairs, under identified circumstances; application of 
corrosion inhibitors; and other follow-on actions.


    Note 9: Corrosion tasks completed in accordance with the 
Document before the effective date of this AD may be credited for 
compliance with the initial corrosion task requirements of paragraph 
(a)(1) of this AD.


    Note 10: Where non-destructive inspection (NDI) methods are 
employed, in accordance with Section 4 of the Document, the 
standards and procedures used must be acceptable to the 
Administrator in accordance with FAR Section 43.13.

    (1) Accomplish corrosion tasks C-55-320-05, Note 4; and C-55-
330-05, Note 1; per Revision D of the Document. Thereafter, 
accomplish these corrosion tasks at intervals not to exceed 5 years.
    (2) Accomplish corrosion task C-57-540-02, Note 5, per Revision 
D of the Document. Thereafter, accomplish this corrosion task at 
intervals not to exceed 5 years.
    (3) Accomplish corrosion task C-57-530-04, Note 3, per Revision 
D of the Document. Thereafter, accomplish this corrosion task at 
intervals not to exceed 5 years.
    (4) Accomplish corrosion task C-53-310-03, per Revision D of the 
Document. Thereafter, accomplish this corrosion task at intervals 
not to exceed 10 years.

Inspection of the Horizontal Stabilizer

    (d) Within 15 years' time-in-service, or 5 years after the 
effective date of this AD, whichever occurs later: Conduct a free-
play inspection of the horizontal stabilizer pivot bearing, 
disassemble ALL horizontal stabilizer pivot bearing assemblies, and 
perform a detailed inspection of the pivot bearing assembly 
components to detect corrosion, in accordance with the procedures 
specified in Task C-55-350-01, Note 1, of Revision D of the 
Document. Thereafter, repeat this inspection at intervals not to 
exceed 15 years.

    Note 11: This paragraph does not require inspection of any area 
that has not exceeded the IA for that area.


    Note 12: For the purposes of this AD, a detailed inspection is 
defined as: ``An intensive visual examination of a specific 
structural area, system, installation, or assembly to detect damage, 
failure, or irregularity. Available lighting is normally 
supplemented with a direct source of good lighting at intensity 
deemed appropriate by the inspector. Inspection aids such as mirror, 
magnifying lenses, etc., may be used. Surface cleaning and elaborate 
access procedures may be required.''

Acceptable Alternative Compliance With Certain Requirements

    (e) As an alternative to the requirements of paragraphs (c) and 
(d) of this AD: Within 90 days after the effective date of this AD, 
revise the FAA-approved maintenance program to incorporate and 
implement Revision D of Lockheed Document Number LR 31889, 
``Corrosion and Protection Control Program, TriStar L-1011,'' dated 
August 15, 1999.

Accommodating Scheduling Requirements

    (f) To accommodate unanticipated scheduling requirements of 
paragraph (c) or (d) of this AD, it is acceptable for an R interval 
to be increased by up to 10%, but not to exceed 6 months. The FAA 
must be informed, in writing, of any such extension within 30 days 
after such adjustment of the schedule.
    (g)(1) If, during any inspection conducted in accordance with 
this AD, Level 3 corrosion is determined to exist in any airplane 
area, accomplish the actions specified in either paragraph (g)(1)(i) 
or (g)(1)(ii) of this AD within 7 days after such determination. 
Information collection requirements contained in this regulation 
have been approved by the Office of Management and Budget (OMB) 
under the provisions of the Paperwork Reduction Act of 1980 (44 
U.S.C. 3501 et seq.) and have been assigned OMB Control Number 2120-
0056.
    (i) Submit a report of that determination to the FAA and 
complete the corrosion task in the affected areas on all Model L-
1011 series airplanes in the operator's fleet; or
    (ii) Submit to the FAA for approval one of the following:
    (A) A proposed schedule for performing the corrosion tasks in 
the affected areas on the remaining Model L-1011 series airplanes in 
the operator's fleet, which is adequate to ensure that any other 
Level 3 corrosion is detected in a timely manner, along with 
substantiating data for that schedule; or
    (B) Data substantiating that the Level 3 corrosion found is an 
isolated occurrence.

    Note 13: Notwithstanding the provisions of Section 1 of the 
Document, which would permit corrosion that otherwise meets the 
definition of Level 3 corrosion (i.e., which is determined to be a 
potentially urgent airworthiness concern requiring expeditious 
action) to be treated as Level 1 if the operator finds that it ``can 
be attributed to an event not typical of the operator's usage of 
other airplanes in the same fleet,'' this paragraph requires that 
data substantiating any such finding be submitted to the FAA for 
approval.

    (2) The FAA may impose schedules other than those proposed, upon 
finding that such changes are necessary to ensure that any other 
Level 3 corrosion is detected in a timely manner.
    (3) Within the time schedule approved under paragraph (g)(1) or 
(g)(2) of this AD, accomplish the corrosion tasks in the affected 
areas of the remaining Model L-1011 series airplanes in the 
operator's fleet.
    (h) If, as a result of any inspection after an initial 
inspection conducted in accordance

[[Page 26498]]

with the requirements of this AD, it is determined that corrosion 
findings exceed Level 1 in any area, within 60 days after such 
determination, implement a means, approved by the FAA, to reduce 
future findings of corrosion in that area to Level 1 or better.
    (i) Before any operator places into service any airplane subject 
to the requirements of this AD, a schedule for the accomplishment of 
corrosion tasks required by this AD must be established in 
accordance with paragraph (i)(1) or (i)(2) of this AD, as 
applicable:
    (1) For airplanes previously maintained in accordance with this 
AD, the first corrosion task in each airplane area to be performed 
by the new operator must be accomplished in accordance with the 
previous operator's schedule or with the new operator's schedule, 
whichever would result in the earlier accomplishment date for that 
task. After each corrosion task has been performed once, each 
subsequent task must be performed in accordance with the new 
operator's schedule.
    (2) For airplanes that have not been previously maintained in 
accordance with this AD, the first corrosion task for each airplane 
area to be performed by the new operator must be accomplished prior 
to further flight or in accordance with a schedule approved by the 
FAA.
    (j) Reports of Level 2 and Level 3 corrosion must be submitted 
at least quarterly to Lockheed Martin Aircraft & Logistics Centers 
in accordance with Section 5 of Revision D of the Document.

    Note 14:
    Reporting of Level 2 and Level 3 corrosion found as a result of 
any opportunity inspections is highly desirable.

Alternative Methods of Compliance

    (k) In accordance with 14 CFR 39.19, the Manager, Atlanta ACO, 
FAA, is authorized to approve alternative methods of compliance for 
this AD.

Incorporation by Reference

    (l) Except as otherwise specified in this AD, the actions must 
be done in accordance with Lockheed Document Number LR 31889, 
``Corrosion Prevention and Control Program, TriStar L-1011,'' dated 
March 15, 1991, including ``Errata Sheet, LR 31889, Corrosion 
Prevention and Control Program, TriStar L-1011,'' issued September 
29, 1992; and Lockheed Document Number LR 31889, ``Corrosion 
Prevention and Control Program, TriStar L-1011,'' including 
Appendices A, B, C, and D, Revision D, dated August 15, 1999; as 
applicable. Revision D contains the following effective pages (the 
revision level of this document is listed only on the title pages of 
this document):

----------------------------------------------------------------------------------------------------------------
                 Page no.                    Revision level  shown on page            Date  shown on page
----------------------------------------------------------------------------------------------------------------
Active Page Record, Page 0.5.............  D................................  August 15, 1999.
----------------------------------------------------------------------------------------------------------------

    (1) The incorporation by reference of Lockheed Document Number 
LR 31889, ``Corrosion Prevention and Control Program, TriStar L-
1011,'' including Appendices A, B, C, and D, Revision D, dated 
August 15, 1999; is approved by the Director of the Federal 
Register, in accordance with 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) The incorporation by reference of Lockheed Document Number 
LR 31889, ``Corrosion Prevention and Control Program, TriStar L-
1011,'' dated March 15, 1991, including ``Errata Sheet, LR 31889, 
Corrosion Prevention and Control Program, TriStar L-1011,'' issued 
September 29, 1992; was approved previously by the Director of the 
Federal Register as of December 17, 1993 (58 FR 60775, November 18, 
1993).
    (3) Copies may be obtained from Lockheed Martin Aircraft & 
Logistics Center, 120 Orion Street, Greenville, South Carolina 
29605. Copies may be inspected at the FAA, Transport Airplane 
Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the 
FAA, Atlanta Aircraft Certification Office, One Crown Center, 1895 
Phoenix Boulevard, suite 450, Atlanta, Georgia; or 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.

Effective Date

    (m) This amendment becomes effective on June 17, 2004.

    Issued in Renton, Washington, on April 27, 2004.
Kevin M. Mullin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 04-10245 Filed 5-12-04; 8:45 am]
BILLING CODE 4910-13-P