[Federal Register: May 27, 2005 (Volume 70, Number 102)]
[Rules and Regulations]
[Page 30617-30621]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr27my05-7]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2004-19753; Directorate Identifier 2002-NM-264-AD;
Amendment 39-14104; AD 2005-11-02]
RIN 2120-AA64
Airworthiness Directives; Boeing Model 767-200, -300, and -300F
Series 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 certain Boeing Model 767-200, -300, and -300F
series airplanes. That AD currently requires inspections for fatigue
cracking of the horizontal stabilizer pivot bulkhead, and repetitive
inspections or other follow-on actions. That action also provides a
permanent repair, which is optional for airplanes with no cracks, and,
if accomplished, ends the repetitive inspections. For airplanes on
which the permanent repair is not installed, this new AD requires
repetitive inspections of the same and additional inspection locations
at new inspection intervals; a one-time torque test; and related
investigative and corrective actions. For airplanes on which the
permanent repair is installed, this new AD would require repetitive
inspections of the repaired area and, if necessary, corrective action.
This AD is prompted by reports of loose tension bolts and crack
indications in the fuselage skin. We are issuing this AD to find and
fix fatigue cracking of the horizontal stabilizer pivot bulkhead and
adjacent structure, which could result in loss of the horizontal
stabilizer.
DATES: This AD becomes effective July 1, 2005.
The incorporation by reference of Boeing Alert Service Bulletin
767-53A0078, Revision 3, dated November 15, 2001; and Boeing Alert
Service Bulletin 767-53A0078, Revision 4, dated September 26, 2002, as
listed in the AD is approved by the Director of the Federal Register as
of July 1, 2005.
On May 24, 2001 (66 FR 23538, May 9, 2001), the Director of the
Federal Register approved the incorporation by reference of Boeing
Service Bulletin 767-53-0078, Revision 2, dated April 19, 2001.
ADDRESSES: For service information identified in this AD, contact
Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-
2207.
Docket: The AD docket contains the proposed AD, comments, and any
final disposition. You can examine the AD docket on the Internet at
http://dms.dot.gov, or in person at the Docket Management Facility
office between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The Docket Management Facility office (telephone (800) 647-
5227) is located on the plaza level of the Nassif Building at the U.S.
Department of Transportation, 400 Seventh Street SW., room PL-401,
Washington, DC. This docket number is FAA-2004-19753; the directorate
identifier for this docket is 2002-NM-264-AD.
FOR FURTHER INFORMATION CONTACT: Suzanne Masterson, Aerospace Engineer,
Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office,
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425)
917-6441; fax (425) 917-6590.
SUPPLEMENTARY INFORMATION: The FAA proposed to amend part 39 of the
[[Page 30618]]
Federal Aviation Regulations (14 CFR part 39) with an AD to supersede
AD 2001-09-13, amendment 39-12220 (66 FR 23538, May 9, 2001). The
existing AD applies to certain Boeing Model 767-200, -300, and -300F
series airplanes. The proposed AD was published in the Federal Register
on December 1, 2004 (69 FR 69838). That action proposed to require, for
airplanes on which the permanent repair is not installed, repetitive
inspections of the same and additional inspection locations at new
inspection intervals; a one-time torque test; and related investigative
and corrective actions. For airplanes on which the permanent repair is
installed, that action proposed to require repetitive inspections of
the repaired area and, if necessary, corrective action.
Comments
We provided the public the opportunity to participate in the
development of this AD. We have considered the comments that have been
submitted on the proposed AD.
Request To Revise Compliance Time
Two commenters request that we revise the compliance language in
paragraph (n) of the proposed AD to specify that the earlier-occurring
threshold determines the compliance time.
We agree that we inadvertently omitted the phrase ``whichever
occurs first'' in paragraph (n)(1). We have revised the final rule
accordingly.
Request To Include Grace Period
One commenter, an operator, requests that we revise paragraph (n)
of the proposed AD to add a grace period to the inspection threshold.
The commenter reports that some of its airplanes could exceed the
proposed thresholds and would consequently be grounded as of the
effective date of the AD. The commenter recommends a grace period of 18
months.
We agree with the request. A substantial portion of the Model 767
fleet has accumulated more than 25,000 total flight cycles, and the
cited service bulletin (767-53A0078) for this AD was originally issued
October 15, 1998--more than 72 months ago. Therefore, some airplanes
indeed could have already exceeded the thresholds in proposed paragraph
(n). We find that an 18-month grace period will provide an acceptable
level of safety. We have revised the final rule accordingly by adding
the grace period in new paragraph (n)(3).
Request To Clarify Certain Requirements
One commenter, an operator, has no objections to the proposed AD
but notes a potential discrepancy in certain requirements. The
commenter states that paragraphs (l)(1)(ii) and (o) of the proposed AD
would require inspection of airplanes that meet certain criteria in the
service bulletin but does not specify any requirement for airplanes
that do not meet those criteria. The commenter requests that we clarify
the proposed AD to address this case.
We agree that clarification might be necessary. Paragraph (l)(1)(i)
of this AD is required for all airplanes; paragraph (l)(1)(ii) is an
additional action for certain airplanes. Cracking cannot be reliably
detected--using the inspections in paragraph (l)--at critical fastener
locations hidden by external doublers, rub strips, or wear plates;
therefore, the open-hole high frequency eddy current (HFEC) inspections
are required only for those airplanes that meet those criteria. For
those airplanes, the open-hole HFEC inspections are required in
addition to the surface inspections (HFEC, low frequency eddy current,
and detailed visual inspections) required by paragraph (l) of this AD.
We have revised paragraphs (l)(1)(ii) and (o) of this final rule to
include this information for clarification.
Request To Add Authorized Representative
One commenter requests a revision to the section titled
``Difference Between the Proposed AD and the Service Bulletin'' in the
preamble of the proposed AD. The commenter requests that we include a
reference to the Boeing Airworthiness Representative (AR) in addition
to the Designated Engineering Representative (DER).
We partially agree with the request. All active Boeing Company DERs
on the Model 767 fleet have been converted to ARs. Although the
referenced section of the preamble is not restated in a final rule, we
have replaced the DER reference in paragraph (p)(3) of this final rule.
Request for Reformatting
One commenter requests that we revise certain formatting for the
paragraph designations in the proposed AD. Specifically, in the
proposed requirement to ``[d]o all the actions in paragraph (l)(1),''
the commenter notes the potential confusion between the lower case
letter ``L'' and the numeral ``1,'' and suggests that using italics
could help the reader differentiate between the two forms.
We agree that certain paragraph designations might be difficult to
distinguish. However, the Federal Register, which is the medium for
notifying the public of official agency actions (including ADs),
establishes the formatting requirements for regulations. The proposed
AD followed those formatting requirements. We have not changed the
final rule regarding this issue.
Explanation of Additional Changes to Proposed AD
We have identified the inspections in paragraph (l)(1) in this
final rule as ``detailed'' and ``special detailed'' inspections. New
Note 3 in this final rule defines a special detailed inspection.
Boeing has received a Delegation Option Authorization (DOA). We
have revised this final rule to delegate the authority to approve an
alternative method of compliance for any repair required by this AD to
the Authorized Representative for the Boeing DOA Organization rather
than the Designated Engineering Representative (DER).
Conclusion
We have carefully reviewed the available data, including the
comments that have been submitted, 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
This AD will affect about 699 airplanes worldwide. The following
table provides the estimated costs for U.S. operators to comply with
this AD.
[[Page 30619]]
Estimated Costs
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Average Number of U.S.-
Action Work labor rate Parts Cost per airplane registered
hours per hour airplanes
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Inspection (required by AD 2001- 1 $65 None........... $65 (per inspection 287.
09-13). cycle).
Inspection and torque check (new 4 65 None........... $260 (per 287.
action). inspection cycle).
Post-modification inspection (new 6 65 None........... $390............... Unknown (for those
action). with permanent
repair per this AD
or AD 2001-09-13).
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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.
We prepared a regulatory evaluation of the estimated costs to
comply with this AD. See the ADDRESSES section for a location to
examine the regulatory evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, 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 39-12220 (66 FR
23538, May 9, 2001), and by adding the following new airworthiness
directive (AD):
2005-11-02 Boeing: Amendment 39-14104. Docket No. FAA-2004-19753;
Directorate Identifier 2002-NM-264-AD.
Effective Date
(a) This AD becomes effective July 1, 2005.
Affected ADs
(b) This AD supersedes AD 2001-09-13, amendment 39-12220.
Applicability
(c) This AD applies to Boeing Model 767-200, -300, and -300F
series airplanes, as listed in Boeing Alert Service Bulletin 767-
53A0078, Revision 4, dated September 26, 2002; certificated in any
category.
Unsafe Condition
(d) This AD was prompted by reports of loose tension bolts and
crack indications in the fuselage skin. We are issuing this AD to
find and fix fatigue cracking of the horizontal stabilizer pivot
bulkhead and adjacent structure, which could result in loss of the
horizontal stabilizer.
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.
Requirements of AD 2001-09-13, Restated
Initial Inspections
(f) Prior to the accumulation of 8,000 total flight cycles, or
within 90 days after May 24, 2001 (the effective date of AD 2001-09-
13), whichever occurs later, perform detailed, surface high
frequency eddy current (HFEC), and low frequency eddy current (LFEC)
inspections, as applicable, for cracking of the forward and aft
outer chord, aft mid chord, and upper and lower intercostals of the
Station 1809.5 bulkhead. Do the inspections per Boeing Service
Bulletin 767-53-0078, Revision 2, dated April 19, 2001; or Boeing
Alert Service Bulletin 767-53A0078, Revision 3, dated November 15,
2001.
Note 1: For the purposes of this AD, a detailed inspection is:
``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.''
Repetitive Inspections
(g) For areas where no cracking is found during the inspection
per paragraph (f) of this AD: Repeat the inspections in paragraph
(f) thereafter at the intervals specified in paragraphs (g)(1) and
(g)(2) of this AD, per Boeing Service Bulletin 767-53-0078, Revision
2, dated April 19, 2001; or Boeing Alert Service Bulletin 767-
53A0078, Revision 3, dated November 15, 2001; until paragraph (i),
(l)(1), or (m) of this AD has been done.
(1) Repeat the detailed inspection every 3,000 flight cycles, or
18 months, whichever comes first.
(2) Repeat the surface HFEC and LFEC inspections every 6,000
flight cycles or 36 months, whichever comes first.
Repair and Follow-On Actions
(h) If any cracking is found during any inspection required by
paragraph (f) or (g) of this AD, before further flight, repair per
paragraph (h)(1) or (h)(2) of this AD, as applicable.
(1) For cracking of the aft outer chord, aft mid chord, or any
intercostal: Repair per a method approved by the Manager, Seattle
Aircraft Certification Office (ACO), FAA. For a repair method to be
approved by the Manager, Seattle ACO, as required by this
[[Page 30620]]
paragraph, the Manager's approval letter must specifically reference
this AD.
(2) For cracking of the forward outer chord: Repair per Boeing
Service Bulletin 767-53-0078, Revision 2, dated April 19, 2001;
Boeing Alert Service Bulletin 767-53A0078, Revision 3, dated
November 15, 2001; or Revision 4, dated September 26, 2002; except
as provided by paragraph (j) of this AD. Procedures for repair
include open-hole HFEC inspections for cracking of certain fastener
holes of the chord and longeron fitting, detailed inspections for
cracking of adjacent structure, and installation of new chords,
splices, fairings, and brackets. If the time-limited repair is done
per the service bulletin, do a detailed inspection of the repaired
area within 1,500 flight cycles or 9 months after installation of
the temporary repair, whichever comes first, and do paragraph
(h)(2)(i) or (h)(2)(ii) of this AD, per the service bulletin. As of
the effective date of this AD, inspect only in accordance with
Boeing Alert Service Bulletin 767-53A0078, Revision 4, dated
September 26, 2002.
(i) If no cracking is found during the inspection of the
repaired area: Within 3,000 flight cycles or 18 months after
installation of the time-limited repair, whichever comes first, do
paragraph (i), ``Permanent Repair,'' of this AD.
(ii) If any cracking is found during the inspection of the
repaired area: Before further flight, do paragraph (i), ``Permanent
Repair,'' of this AD.
Permanent Repair
(i) Except as provided by paragraph (j) of this AD, installation
of the permanent repair of the forward outer chord, including
accomplishment of all actions specified in Part 4 of the
Accomplishment Instructions of Boeing Service Bulletin 767-53-0078,
Revision 2, dated April 19, 2001; Boeing Alert Service Bulletin 767-
53A0078, Revision 3, dated November 15, 2001; or Boeing Alert
Service Bulletin 767-53A0078, Revision 4, dated September 26, 2002;
terminates the repetitive inspections required by paragraph (g) of
this AD. As of the effective date of this AD, install the permanent
repair only in accordance with Boeing Alert Service Bulletin 767-
53A0078, Revision 4, dated September 26, 2002.
Note 2: Installation of the permanent repair before the
effective date of this AD in accordance with Boeing Service Bulletin
767-53-0078, dated October 15, 1998; Revision 1, dated September 9,
1999; is acceptable for compliance with paragraph (i) of this AD.
Exception To Repair Instructions
(j) For repairs of the forward outer chord: Where the service
bulletin specifies to ask Boeing for repair data, repair per a
method approved by the Manager, Seattle ACO, or per data meeting the
type certification basis of the airplane approved by a Boeing
Company Designated Engineering Representative who has been
authorized by the Manager, Seattle ACO, to make such findings. For a
repair method to be approved by the Manager, Seattle ACO, as
required by this paragraph, the repair must meet the certification
basis of the airplane, and the Manager's approval letter must
specifically reference this AD.
New Requirements of This AD
Initial and Repetitive Inspections, and Torque Test for Airplanes
Without the Permanent Repair
(k) For airplanes that have not had the permanent repair
installed in accordance with paragraph (i) of this AD, at the later
of the times in paragraphs (k)(1) and (k)(2) of this AD, do all the
actions in paragraph (l) of this AD.
(1) Within 3,000 flight cycles or 18 months after the effective
date of this AD, whichever occurs first.
(2) Prior to the accumulation of 8,000 total flight cycles.
(l) Do all the actions in paragraphs (l)(1) and (l)(2) of this
AD in accordance with ``Part 1--Inspection'' of the Accomplishment
Instructions of Boeing Alert Service Bulletin 767-53A0078, Revision
4, dated September 26, 2002.
(1) Do a detailed inspection and applicable special detailed
inspections (i.e., using LFEC and HFEC methods) for cracking of the
forward and aft outer chord, splice fitting, aft mid chord, aft
intercostal, tension fitting, and fuselage skin, and repeat the
applicable inspections at the applicable time in paragraph (l)(1)(i)
and (l)(1)(ii) of this AD. This inspection terminates the repetitive
inspections required by paragraphs (f) and (g) of this AD.
Note 3: For the purposes of this AD, a special detailed
inspection is: ``An intensive examination of a specific item,
installation, or assembly to detect damage, failure, or
irregularity. The examination is likely to make extensive use of
specialized inspection techniques and/or equipment. Intricate
cleaning and substantial access or disassembly procedure may be
required.''
(i) Repeat the inspections, except for the open-hole
inspections, at intervals not to exceed 3,000 flight cycles until
the permanent repair in paragraph (m)(2) of this AD has been done.
(ii) For airplanes that meet the criteria in flag note 1 of
Figure 1 of Boeing Alert Service Bulletin 767-53A0078, Revision 4,
dated September 26, 2002 (close ream fasteners, external doubler,
rub strip, or wear plate installed): Repeat the open-hole HFEC
inspections for cracking of the forward outer chord, splice fitting,
tension fitting, and fuselage skin in Step 7, Figure 2, of the
service bulletin at intervals not to exceed 9,000 flight cycles
until the permanent repair in paragraph (m)(2) of this AD has been
done. The open-hole HFEC inspections are required in addition to the
surface inspections (HFEC, LFEC, and detailed visual inspections)
required by paragraph (l)(1)(i) of this AD.
(2) Do a one-time torque test and related investigative and
corrective actions of the tension bolt at lower stringer 12A. If any
corrosion or damage is found in the bolt hole, and the service
bulletin specifies to contact Boeing for appropriate action: Before
further flight, repair per a method approved by the Manager, Seattle
Aircraft Certification Office (ACO), FAA; or per data meeting the
type certification basis of the airplane approved by an Authorized
Representative for the Boeing Delegation Option Authorization
Organization who has been authorized by the Manager, Seattle ACO, to
make those findings. For a repair method to be approved, the repair
must meet the certification basis of the airplane, and the approval
must specifically refer to this AD.
Corrective Actions
(m) If any cracking is found during any inspection required by
paragraph (l), (n) and (o) of this AD, before further flight, repair
in accordance with paragraph (m)(1) or (m)(2) of this AD, as
applicable.
(1) For cracks found during the inspection required by paragraph
(n) or (o) of this AD, or for cracks found in the aft outer chord,
tension fitting, splice fitting, aft mid chord, or any intercostal:
Before further flight, repair per a method approved by the Manager,
Seattle ACO; or per data meeting the type certification basis of the
airplane approved by an Authorized Representative for the Boeing
Delegation Option Authorization Organization who has been authorized
by the Manager, Seattle ACO, to make those findings. For a repair
method to be approved, the repair must meet the certification basis
of the airplane, and the approval must specifically refer to this
AD.
(2) For cracks in the forward outer chord: Prior to further
flight, do the time limited repair in paragraph (h)(2) of this AD,
or do the permanent repair in paragraph (i) of this AD. If the time
limited repair is done, do the other applicable actions in paragraph
(h)(2) of this AD at the times specified in that paragraph. As of
the effective date of this AD, only repairs done per Boeing Alert
Service Bulletin 767-53A0078, Revision 4, dated September 26, 2002,
are acceptable for compliance with the requirements of this
paragraph.
Repetitive Inspection of Repaired Area
(n) For any airplane on which the permanent repair in paragraph
(i) or (m)(2) of this AD is installed, at the latest of the times in
paragraphs (n)(1), (n)(2), and (n)(3) of this AD: Do detailed, LFEC,
and applicable HFEC inspections of the forward and aft outer chords,
tension fitting, splice fitting, and splice angle for cracks; and a
detailed inspection of the aft mid chord and aft upper and lower
intercostals for cracks. Do the inspections in accordance with
``Part 6--After Modification or After-Repair Inspection Program'' of
the Accomplishment Instructions of Boeing Alert Service Bulletin
767-53A0078, Revision 4, dated September 26, 2002. Repeat each
inspection, except as provided by paragraph (o) of this AD,
thereafter at intervals not to exceed 6,000 flight cycles, or 36
months, whichever occurs first.
(1) Within 12,000 flight cycles or 72 months, whichever occurs
first, after the repair accomplished in accordance with paragraph
(i) or (m)(2) of this AD.
(2) Prior to the accumulation of 25,000 total flight cycles.
(3) Within 18 months after the effective date of this AD.
(o) For any airplane on which the permanent repair in paragraph
(i) or (m)(2) of
[[Page 30621]]
this AD is installed, and that meets the criteria (close ream
fasteners, external doubler, rub strip or wear plate installed) in
flag note 1 of Figure 9 of Boeing Alert Service Bulletin 767-
53A0078, Revision 4, dated September 26, 2002: After the initial
inspection in paragraph (n) of this AD, repeat the open-hole HFEC
inspection in Step 7 of Figure 10 of the service bulletin, at
intervals not to exceed 12,000 flight cycles, or 72 months,
whichever occurs first. The open-hole HFEC inspections are required
in addition to the surface inspections (HFEC, LFEC, and detailed
visual inspections) required by paragraph (n) of this AD.
Alternative Methods of Compliance
(p)(1) In accordance with 14 CFR 39.19, the Manager, Seattle
ACO, is authorized to approve alternative methods of compliance
(AMOCs) for the corresponding provisions of this AD.
(2) AMOCs approved previously per AD 2001-09-13, amendment 39-
12220, are approved as AMOCs with the corresponding provisions of
this AD.
(3) An AMOC that provides an acceptable level of safety may be
used for any repair required by this AD, if it is approved by an
Authorized Representative for the Boeing Delegation Option
Authorization Organization who has been authorized by the Manager,
Seattle ACO, to make such findings.
Material Incorporated by Reference
(q) Unless otherwise specified in this AD, the actions must be
done in accordance with Boeing Service Bulletin 767-53-0078,
Revision 2, dated April 19, 2001; Boeing Alert Service Bulletin 767-
53A0078, Revision 3, dated November 15, 2001; and Boeing Alert
Service Bulletin 767-53A0078, Revision 4, dated September 26, 2002;
as applicable.
(1) The incorporation by reference of Boeing Alert Service
Bulletin 767-53A0078, Revision 3, dated November 15, 2001; and
Boeing Alert Service Bulletin 767-53A0078, Revision 4, dated
September 26, 2002; 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 Boeing Service Bulletin
767-53-0078, Revision 2, dated April 19, 2001, was approved
previously by the Director of the Federal Register as of May 24,
2001 (66 FR 23538, May 9, 2001).
(3) To get copies of the service information, contact Boeing
Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207.
You may view the AD docket at the Docket Management Facility, U.S.
Department of Transportation, 400 Seventh Street SW., room PL-401,
Nassif Building, Washington, DC. To review copies of the service
information, go to 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 May 16, 2005.
Michael J. Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-10433 Filed 5-26-05; 8:45 am]
BILLING CODE 4910-13-P