[Federal Register: March 24, 2004 (Volume 69, Number 57)]
[Rules and Regulations]
[Page 13715-13716]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr24mr04-3]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 2001-NM-400-AD; Amendment 39-13527; AD 2004-06-01]
RIN 2120-AA64
Airworthiness Directives; Dornier Model 328-100 Series Airplanes
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule.
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SUMMARY: This amendment adopts a new airworthiness directive (AD),
applicable to certain Dornier Model 328-100 series airplanes, that
requires replacement of the existing main landing gear (MLG) leg
assembly with a modified assembly. This action is necessary to prevent
fatigue damage of the MLG leg, which could result in collapse of the
MLG. This action is intended to address the identified unsafe
condition.
DATES: Effective April 28, 2004.
The incorporation by reference of a certain publication listed in
the regulations is approved by the Director of the Federal Register as
of April 28, 2004.
ADDRESSES: The service information referenced in this AD may be
obtained from AvCraft Aerospace GmbH, P.O. Box 1103, D-82230 Wessling,
Germany. 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 Office of the
Federal Register, 800 North Capitol Street, NW., suite 700, Washington,
DC.
FOR FURTHER INFORMATION CONTACT: Tom Groves, Aerospace Engineer,
International Branch, ANM-116, FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425)
227-1503; fax (425) 227-1149.
SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal
Aviation Regulations (14 CFR part 39) to include an airworthiness
directive (AD) that is applicable to certain Dornier Model 328-100
series airplanes was published in the Federal Register on January 5,
2004 (69 FR 287). That action proposed to require replacement of the
existing main landing gear (MLG) leg assembly with a modified assembly.
Comments
Interested persons have been afforded an opportunity to participate
in the making of this amendment. No comments were submitted in response
to the proposal or the FAA's determination of the cost to the public.
Conclusion
After careful review of the available data, we have determined that
air safety and the public interest require the adoption of the rule as
proposed.
Cost Impact
We estimate that 53 airplanes of U.S. registry will be affected by
this AD, that it will take approximately 8 work hours per airplane to
accomplish the required
[[Page 13716]]
replacement, and that the average labor rate is $65 per work hour.
Required parts will be provided by the manufacturer at no charge. Based
on these figures, the cost impact of this AD on U.S. operators is
estimated to be $27,560, or $520 per airplane.
The cost impact figure discussed above is based on assumptions that
no operator has yet accomplished any of the requirements of this AD
action, 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 adding the following new airworthiness
directive:
2004-06-01 Fairchild Dornier Gmbh (Formerly Dornier Luftfahrt GmbH):
Amendment 39-13527. Docket 2001-NM-400-AD.
Applicability: Model 328-100 series airplanes, certificated in
any category, serial numbers (S/Ns) 3005 through 3119 inclusive,
equipped with a main landing gear (MLG) leg assembly, main body, or
main machined body having a part number (P/N) and S/N listed in
Table 1 of this AD.
Table 1.--MLG Leg Assembly, Main Body, and Main Machined Body P/Ns and S/Ns
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MLG part name P/N S/Ns
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Leg assembly..................... 22730-000-02 U16 through U22 inclusive.
Leg assembly..................... 22731-000-02 U16 through U22 inclusive.
Main body........................ 22415-000-01 U16 through U22 inclusive.
Main body........................ 22416-000-01 U16 through U22 inclusive.
Main machined body............... 24284-000-00 U56, U62, U64, U66, U68, U70, U74.
Main machined body............... 22286-000-00 U51, U57, U59, U65, U67, U73, U85.
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Compliance: Required as indicated, unless accomplished
previously.
To prevent fatigue damage of the MLG leg, which could result in
collapse of the MLG, accomplish the following:
Replacement of MLG Leg Assembly
(a) Prior to the accumulation of 16,000 total landings on the
MLG body, or within 300 flight hours after the effective date of
this AD, whichever occurs later, replace the existing MLG leg
assembly with a modified leg assembly per Dornier Service Bulletin
SB 328-32-344, Revision 1, dated June 11, 2001.
Note 1: Dornier Service Bulletin SB 328-32-344, Revision 1,
refers to Messier-Dowty Service Bulletins 800-32-028, dated November
27, 2000; and 800-32-014, dated January 18, 1999; as appropriate
sources of service information for modifying the MLG leg assembly.
Alternative Methods of Compliance
(b) In accordance with 14 CFR 39.19, the Manager, International
Branch, ANM-116, Transport Airplane Directorate, FAA, is authorized
to approve alternative methods of compliance for this AD.
Incorporation by Reference
(c) The actions shall be done in accordance with Dornier Service
Bulletin SB 328-32-344, Revision 1, dated June 11, 2001. This
incorporation by reference was approved by the Director of the
Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part
51. Copies may be obtained from AvCraft Aerospace GmbH, P.O. Box
1103, D-82230 Wessling, Germany. Copies may be inspected at the FAA,
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton,
Washington; or at the Office of the Federal Register, 800 North
Capitol Street, NW., suite 700, Washington, DC.
Note 2: The subject of this AD is addressed in German
airworthiness directive 2002-001, dated January 10, 2002.
Effective Date
(d) This amendment becomes effective on April 28, 2004.
Issued in Renton, Washington, on March 5, 2004.
Ali Bahrami,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 04-5941 Filed 3-23-04; 8:45 am]
BILLING CODE 4910-13-P