[Federal Register: October 13, 2004 (Volume 69, Number 197)]
[Rules and Regulations]
[Page 60807-60809]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr13oc04-7]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 2002-NM-286-AD; Amendment 39-13821; AD 2004-20-16]
RIN 2120-AA64
Airworthiness Directives; Boeing Model 747-200B, -200C, -200F, -
300, -400, -400D, and -400F Series Airplanes; and Model 747SP 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 Boeing Model 747-200B, -200C, -200F, -300, -400,
-400D, and -400F series airplanes; and Model 747SP series airplanes,
that requires repetitive functional tests of the auxiliary power unit
(APU) and engine fire shutoff switches and repetitive replacements of
the APU and engine fire shutoff switches. The AD also provides an
optional terminating action for the repetitive functional tests and
replacements. This action is necessary to prevent mineral build-up on
the APU and engine fire shutoff switches, which could lead to failure
of the switches to discharge fire suppressant in the affected area and
could result in an uncontrolled fire that could spread to the strut,
wing, or aft body of the airplane. This action is intended to address
the identified unsafe condition.
DATES: Effective November 17, 2004.
The incorporation by reference of a certain publication listed in
the regulations is approved by the Director of the Federal Register as
of November 17, 2004.
ADDRESSES: The service information referenced in this AD may be
obtained from Boeing Commercial Airplanes, P.O. Box 3707, Seattle,
Washington 98124-2207. 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 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: Sulmo Mariano, Aerospace Engineer,
[[Page 60808]]
Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification
Office, 1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone
(425) 917-6501; fax (425) 917-6590.
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 Boeing Model 747-200B, -
200C, -200F, -300, -400, -400D, and -400F series airplanes; and Model
747SP series airplanes, was published in the Federal Register on June
23, 2004 (69 FR 34971). That action proposed to require repetitive
functional tests of the auxiliary power unit (APU) and engine fire
shutoff switches and repetitive replacements of the APU and engine fire
shutoff switches. That action also proposed to provide an optional
terminating action for the repetitive functional tests and
replacements.
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
The FAA has determined that air safety and the public interest
require the adoption of the rule as proposed.
Clarification of Summary Language
Since the proposed AD was published we noticed that in the Summary
of the proposed AD we referred to ``inspections'' instead of
``functional tests.'' We have corrected the Summary of this AD.
Cost Impact
There are approximately 316 airplanes of the affected design in the
worldwide fleet. We estimate that 50 airplanes of U.S. registry will be
affected by this AD, and that the average labor rate is $65 per work
hour. Table 1 provides the estimated costs for U.S. operators to comply
with this AD.
Table 1.--Estimated Costs
----------------------------------------------------------------------------------------------------------------
Action Work hours Cost per airplane Total cost
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Inspection and Functional Test (per 10-14 (depending on airplane $650-910 $32,500-45,500
test cycle). model).
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The cost impact figures discussed above are 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:
2004-20-16 Boeing: Amendment 39-13821. Docket 2002-NM-286-AD.
Applicability: Model 747-200B, -200C, -200F, -300, -400, -400D,
and -400F series airplanes; and Model 747SP series airplanes; as
listed in Boeing Alert Service Bulletin 747-26A2274, Revision 1,
dated January 9, 2003; certificated in any category.
Compliance: Required as indicated, unless accomplished
previously.
To prevent mineral build-up on the auxiliary power unit (APU)
and engine fire shutoff switches, which could lead to failure of the
switches to discharge fire suppressant in the affected area and
could result in an uncontrolled fire that could spread to the strut,
wing, or aft body of the airplane, accomplish the following:
Service Bulletin Reference
(a) The term ``service bulletin,'' as used in this AD, means the
Accomplishment Instructions of Boeing Alert Service Bulletin 747-
26A2274, Revision 1, dated January 9, 2003.
Initial and Repetitive Functional Test
(b) At the later of the compliance times specified in paragraphs
(b)(1) and (b)(2) of this AD, perform a functional test of the APU
and engine fire shutoff switches, in accordance with the service
bulletin. Repeat the functional test thereafter at intervals not to
exceed 18 months.
(1) Within 18 months since the date of issuance of the original
Airworthiness Certificate or the original Export Certificate of
Airworthiness.
(2) Within 90 days after the effective date of this AD.
Fire Shutoff Switch Failure
(c) If any fire shutoff switch fails during any functional test
required by paragraph (b) or (f) of this AD, before further flight,
replace the switch with a new or serviceable switch, in accordance
with the service bulletin. Repeat the switch replacement thereafter
at intervals not to exceed 36 months.
Replacement
(d) Within 36 months after the effective date of this AD,
replace all APU and engine fire shutoff switches that have not been
previously replaced per paragraph (c) of this AD with new or
serviceable switches, in accordance with the service bulletin.
Repeat the switch replacement thereafter at intervals not to exceed
36 months.
Deactivation of Lucas Humidifier
(e) Operators may terminate the repetitive requirements of
paragraphs (b), (c), and (d) of this AD by accomplishing the actions
in
[[Page 60809]]
paragraphs (e)(1) and (e)(2) of this AD, except as provided by
paragraph (f) of this AD.
(1) Deactivate the Lucas humidifier, part number (P/N)
M01AA0101, M01AB0101, M01AB0102, or M01AB0103, in accordance with
the service bulletin.
(2) Before further flight following the deactivation specified
in paragraph (e)(1) of this AD, replace all APU and engine fire
shutoff switches with new or serviceable switches in accordance with
the service bulletin.
Reactivation of Lucas Humidifier
(f) For any airplanes on which Lucas humidifier, P/N M01AA0101,
M01AB0101, M01AB0102, or M01AB0103 is reactivated after the
effective date of this AD: Do the requirements of paragraphs (f)(1)
and (f)(2) of this AD at the times specified in those paragraphs.
(1) Within 18 months after reactivating the humidifier, and
thereafter at intervals not to exceed 18 months, do the functional
test required by paragraph (b) of this AD.
(2) Within 36 months after reactivating the humidifier, and
thereafter at intervals not to exceed 36 months, replace all APU and
engine fire shutoff switches that have not been previously replaced
per paragraph (c) of this AD. Do the replacements per paragraph (d)
of this AD.
Actions Accomplished Per Previous Issue of Service Bulletin
(g) Unless otherwise specified in this AD, actions accomplished
before the effective date of this AD per Boeing Alert Service
Bulletin 747-26A2274, dated August 29, 2002, are considered
acceptable for compliance with the corresponding action specified in
this AD.
Alternative Methods of Compliance
(h) In accordance with 14 CFR 39.19, the Manager, Seattle
Aircraft Certification Office, FAA, is authorized to approve
alternative methods of compliance for this AD.
Incorporation by Reference
(i) The actions shall be done in accordance with Boeing Alert
Service Bulletin 747-26A2274, Revision 1, dated January 9, 2003.
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 Boeing Commercial Airplanes, P.O.
Box 3707, Seattle, Washington 98124-2207. Copies may be inspected at
the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW.,
Renton, Washington; 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
(j) This amendment becomes effective on November 17, 2004.
Issued in Renton, Washington, on September 30, 2004.
Kevin M. Mullin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 04-22563 Filed 10-12-04; 8:45 am]
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