[Federal Register: January 5, 2005 (Volume 70, Number 3)]
[Rules and Regulations]
[Page 679-680]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr05ja05-5]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2004-19200; Directorate Identifier 2003-NM-195-AD;
Amendment 39-13927; AD 2005-01-03]
RIN 2120-AA64
Airworthiness Directives; Boeing Model 747-100, -100B, -100B SUD,
-200B, -200C, -200F, and -300 Series Airplanes; and Model 747SP and
747SR Series Airplanes; Equipped With Pratt & Whitney JT9D-3 and -7
(Except -70) Series Engines or General Electric CF6-50 Series Engines
With Modified JT9D-7 Inboard Struts
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Boeing airplanes listed above. This AD requires repetitive
detailed inspections of the midspar web of the inboard and/or outboard
struts for cracking, disbonding, or buckling; repetitive detailed
inspections of the midspar stiffeners for any crack or fracture;
related investigative actions; and corrective actions, if necessary.
This AD is prompted by reports of cracking in the midspar web. We are
issuing this AD to detect and correct cracking in the midspar assembly,
which could result in the loss of the midspar assembly load path, and
could, combined with the loss of the nacelle station 180 bulkhead load
path, lead to the separation of the engine from the airplane.
DATES: This AD becomes effective February 9, 2005.
The incorporation by reference of a certain publication listed in
the AD is approved by the Director of the Federal Register as of
February 9, 2005.
ADDRESSES: For service information identified in this AD, contact
Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-
2207. You can examine this information 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
.
You can examine the contents of this 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., room PL-401,
on the plaza level of the Nassif Building, Washington, DC. This docket
number is FAA-2004-19200; the directorate identifier for this docket is
2003-NM-195-AD.
FOR FURTHER INFORMATION CONTACT: Candice Gerretsen, Aerospace Engineer,
Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office,
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425)
917-6428; fax (425) 917-6590.
Examining the 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 DOT
street address stated in the ADDRESSES section.
SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR Part 39
with an AD for certain Boeing Model 747-100, -100B, -100B SUD, -200B, -
200C, -200F, and -300 series airplanes; and Model 747SP and 747SR
series airplanes; equipped with Pratt & Whitney JT9D-3 and -7 (except -
70) series engines or General Electric CF6-50 series engines with
modified JT9D-7 inboard struts. That action, published in the Federal
Register on September 29, 2004 (69 FR 58101), proposed to require
repetitive detailed inspections of the midspar web of the inboard and/
or outboard struts for cracking, disbonding, or buckling; repetitive
detailed inspections of the midspar stiffeners for any crack or
fracture; related investigative actions; and corrective actions, if
necessary.
Comments
We provided the public the opportunity to participate in the
development of this AD. We have considered the comment that has been
submitted on the proposed AD. The commenter, the manufacturer, supports
the proposed AD.
Conclusion
We have carefully reviewed the available data, including the
comment that has been submitted, and determined that air safety and the
public interest require adopting the AD as proposed.
Costs of Compliance
There are about 228 airplanes of the affected design worldwide and
78 airplanes of U.S. registry. The actions will take about 6 to 13 work
hours per airplane, at an average labor rate of $65 per work hour.
Based on these figures, the estimated cost of the AD for U.S. operators
is between $30,420 and $65,910, or between $390 and $845 per airplane,
per inspection cycle.
Authority for This Rulemaking
The FAA's authority to issue rules regarding aviation safety is
found in Title 49 of the United States Code. 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.
This rulemaking is promulgated under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701, ``General
requirements.'' Under that section, the FAA is charged with promoting
safety 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 AD.
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 the regulation:
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. See the
[[Page 680]]
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 adding the following new airworthiness
directive (AD):
2005-01-03 Boeing: Amendment 39-13927. Docket No. FAA-2004-19200;
Directorate Identifier 2003-NM-195-AD.
Effective Date
(a) This AD becomes effective February 9, 2005.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Boeing Model 747-100, -100B, -100B SUD, -
200B, -200C, -200F, and -300 series airplanes; and Model 747SP and
747SR series airplanes; certificated in any category; equipped with
Pratt & Whitney JT9D-3, and -7 (except -70) series engines or
General Electric CF6-50 series engines with modified JT9D-7 inboard
struts; as listed in Boeing Alert Service Bulletin 747-54A2219,
dated September 4, 2003.
Unsafe Condition
(d) This AD was prompted by reports of cracking in the midspar
web. We are issuing this AD to detect and correct cracking in the
midspar assembly, which could result in the loss of the midspar
assembly load path, and could, combined with the loss of the nacelle
station 180 bulkhead load path, lead to the separation of the engine
from 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.
Compliance Times
(f) Within 18 months after the effective date of this AD, do the
actions in paragraphs (g) and (h) of this AD, as applicable. Repeat
the actions thereafter at intervals not to exceed 1,200 flight
cycles.
Inboard Strut Midspar Inspection
(g) For Group 1 and 2 airplanes specified in paragraph 1.A.1. of
Boeing Alert Service Bulletin 747-54A2219, dated September 4, 2003:
Perform a detailed inspection of the midspar web of the inboard
struts for cracking, disbonding, or buckling; a detailed inspection
of the midspar stiffeners for any crack or fracture; related
investigative actions; and any applicable corrective actions; in
accordance with ``Part 1'' of the Work Instructions of Boeing Alert
Service Bulletin 747-54A2219, dated September 4, 2003; except as
required by paragraph (i) of this AD. Perform any related
investigative actions and any applicable corrective actions before
further flight.
Outboard Strut Midspar Inspection
(h) For Group 1 airplanes specified in paragraph 1.A.1. of
Boeing Alert Service Bulletin 747-54A2219, dated September 4, 2003:
Perform a detailed inspection of the midspar web of the outboard
struts for cracking, disbonding, or buckling; a detailed inspection
of the midspar stiffeners for any crack or fracture; related
investigative actions; and any applicable corrective actions; in
accordance with ``Part 2'' of the Work Instructions of Boeing Alert
Service Bulletin 747-54A2219, dated September 4, 2003; except as
required by paragraph (i) of this AD. Perform any related
investigative actions and any applicable corrective actions before
further flight.
Contact the FAA/Designated Engineering Representative (DER)
(i) Where Boeing Alert Service Bulletin 747-54A2219, dated
September 4, 2003, 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 a Boeing Company DER who has been authorized by the Manager,
Seattle ACO, to make such findings. For a repair method to be
approved, the approval must specifically reference this AD.
Alternative Methods of Compliance (AMOCs)
(j)(1) The Manager, Seattle ACO, FAA, has the authority to
approve AMOCs for this AD, if requested in accordance with the
procedures found in 14 CFR 39.19.
(2) An AMOC that provides an acceptable level of safety may be
used for any repair required by this AD, if it is approved by a
Boeing Company DER who has been authorized by the Manager, Seattle
ACO, to make those findings. For a repair method to be approved, the
approval must specifically refer to this AD.
Material Incorporated by Reference
(k) You must use Boeing Alert Service Bulletin 747-54A2219,
dated September 4, 2003, to perform the actions that are required by
this AD, unless the AD specifies otherwise. The Director of the
Federal Register approves the incorporation by reference of this
document in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. For
copies of the service information, contact Boeing Commercial
Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207. For
information on the availability of this material at the National
Archives and Records Administration (NARA), call (202) 741-6030, or
go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html
.
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.
Issued in Renton, Washington, on December 27, 2004.
Kevin M. Mullin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-105 Filed 1-4-05; 8:45 am]
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