Airworthiness Directives; Viking Air Limited Models DHC-6-1, DHC-6-100, DHC-6-200, and DHC-6-300 Airplanes, 16779-16782 [E8-6468]
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16779
Proposed Rules
Federal Register
Vol. 73, No. 62
Monday, March 31, 2008
This section of the FEDERAL REGISTER
contains notices to the public of the proposed
issuance of rules and regulations. The
purpose of these notices is to give interested
persons an opportunity to participate in the
rule making prior to the adoption of the final
rules.
DEPARTMENT OF HOMELAND
SECURITY
U.S. Citizenship and Immigration
Services
Washington, DC 20529. To ensure
proper handling, please reference DHS
Docket No. USCIS–2007–0055 on your
correspondence. This mailing address
may also be used for paper, disk, or CD–
ROM submissions.
• Hand Delivery/Courier: Regulatory
Management Division, U.S. Citizenship
and Immigration Services, Department
of Homeland Security, 111
Massachusetts Avenue, NW., 3rd Floor,
Washington, DC 20529. Contact
Telephone Number (202) 272–8377.
8 CFR Parts 214, 215 and 274a
FOR FURTHER INFORMATION CONTACT:
[CIS No. 2428–07; Docket No. USCIS–2007–
0055]
Hiroko Witherow, Service Center
Operations, U.S. Citizenship and
Immigration Services, Department of
Homeland Security, 111 Massachusetts
Avenue, NW., Suite 3000, Washington,
DC 20529, telephone (202) 272–8410.
RIN 1615–AB65
Changes to Requirements Affecting H–
2A Nonimmigrants: Extending the
Public Comment Period
U.S. Citizenship and
Immigration Services, DHS.
ACTION: Proposed rule: extending the
public comment period.
AGENCY:
SUMMARY: U.S. Citizenship and
Immigration Services (USCIS)
announces the extension of the public
comment period for the proposed rule
entitled ‘‘Changes to Requirements
Affecting H–2A Nonimmigrants.’’ The
proposed rule was published in the
Federal Register on February 13, 2008.
Written comments on the proposed rule
were to be submitted to USCIS on or
before March 31, 2008 (a 45-day
comment period) in order to be assured
of consideration. USCIS has decided to
accept comments from the public
through April 14, 2008.
DATES: The comment period for the
proposed rule published at 73 FR 8230,
February 13, 2008, is extended through
April 14, 2008. Comments received by
USCIS after this date will not be
considered.
You may submit comments,
identified by DHS Docket No. USCIS–
2007–0055, by one of the following
methods:
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the
instructions for submitting comments.
• Mail: Chief, Regulatory
Management Division, U.S. Citizenship
and Immigration Services, Department
of Homeland Security, 111
Massachusetts Avenue, NW., 3rd Floor,
jlentini on PROD1PC65 with PROPOSALS
ADDRESSES:
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On
February 13, 2008, the Department of
Homeland Security (DHS) published a
proposed rule in the Federal Register
entitled ‘‘Changes to Requirements
Affecting H–2A Nonimmigrants’’ at 73
FR 8230. This rule proposed
amendments to DHS regulations
affecting temporary and seasonal
agricultural workers within the H–2A
nonimmigrant classification and their
U.S. employers. You may view a copy
of the February 13, 2008, proposed rule
at: https://a257.g.akamaitech.net/7/257/
2422/01jan20081800/
edocket.access.gpo.gov/2008/pdf/E82532.pdf
USCIS has decided to extend the
comment period through April 14, 2008.
Comments received by USCIS after
April 14, 2008, will not be considered
in drafting the final rule.
SUPPLEMENTARY INFORMATION:
Dated: March 26, 2008.
Emilio T. Gonzalez,
Director, U.S. Citizenship and Immigration
Services.
[FR Doc. E8–6605 Filed 3–28–08; 8:45 am]
BILLING CODE 4410–10–P
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2008–0367; Directorate
Identifier 2007–CE–089–AD]
RIN 2120–AA64
Airworthiness Directives; Viking Air
Limited Models DHC–6–1, DHC–6–100,
DHC–6–200, and DHC–6–300 Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
SUMMARY: We propose to adopt a new
airworthiness directive (AD) for the
products listed above. This proposed
AD results from mandatory continuing
airworthiness information (MCAI)
originated by an aviation authority of
another country to identify and correct
an unsafe condition on an aviation
product. The MCAI describes the unsafe
condition as:
Service experience indicates that as aircraft
become older, they are more likely to exhibit
indications of corrosion.
Additionally, the FAA has reviewed the
service experience and finds this action
to be necessary based upon that service
experience. The proposed AD would
require actions that are intended to
address the unsafe condition described
in the MCAI.
DATES: We must receive comments on
this proposed AD by April 30, 2008.
ADDRESSES: You may send comments by
any of the following methods:
• Federal eRulemaking Portal: Go to
https://www.regulations.gov. Follow the
instructions for submitting comments.
• Fax: (202) 493–2251.
• Mail: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590.
• Hand Delivery: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590, between 9 a.m.
and 5 p.m., Monday through Friday,
except Federal holidays.
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Federal Register / Vol. 73, No. 62 / Monday, March 31, 2008 / Proposed Rules
Examining the AD Docket
You may examine the AD docket on
the Internet at https://
www.regulations.gov; or in person at the
Docket Management Facility between 9
a.m. and 5 p.m., Monday through
Friday, except Federal holidays. The AD
docket contains this proposed AD, the
regulatory evaluation, any comments
received, and other information. The
street address for the Docket Office
(telephone (800) 647–5527) is in the
ADDRESSES section. Comments will be
available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT:
Richard Beckwith, Aerospace Engineer,
FAA, New York Aircraft Certification
Office,1600 Stewart Avenue, Suite 410,
Westbury, New York 11590; telephone:
(516) 228–7302; fax: (516) 568–2716.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written
relevant data, views, or arguments about
this proposed AD. Send your comments
to an address listed under the
ADDRESSES section. Include ‘‘Docket No.
FAA–2008–0367; Directorate Identifier
2007–CE–089–AD’’ at the beginning of
your comments. We specifically invite
comments on the overall regulatory,
economic, environmental, and energy
aspects of this proposed AD. We will
consider all comments received by the
closing date and may amend this
proposed AD because of those
comments.
We will post all comments we
receive, without change, to https://
www.regulations.gov, including any
personal information you provide. We
will also post a report summarizing each
substantive verbal contact we receive
about this proposed AD.
jlentini on PROD1PC65 with PROPOSALS
Discussion
Transport Canada, which is the
aviation authority for Canada, has
issued AD No. CF–94–12R1, dated April
13, 1999; and AD No. CF–99–11, dated
May 28, 1999 (referred to after this as
‘‘the MCAI’’), to correct an unsafe
condition for the specified products.
The MCAI states:
Service experience indicates that as aircraft
become older, they are more likely to exhibit
indications of corrosion. Transport Canada,
in conjunction with other airworthiness
authorities, has committed itself to ensuring
that additional maintenance programs for
older aircraft are developed and
implemented to minimize and control
corrosive deterioration that could jeopardize
airworthiness. Bombardier Inc., as
manufacturer of the DHC–6 aircraft, has
developed a Corrosion Prevention and
Control Program which identifies specific
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areas that must be inspected to ensure the
structural integrity of the DHC–6 fleet.
Additionally, the FAA has reviewed the
service experience of the Viking Air
Limited Models DHC–6–1, DHC–6–100,
DHC–6–200, and DHC–6–300 airplanes
and finds this action to be necessary
based upon that service experience.
The MCAI requires that you do the
corrosion tasks required by the
corrosion prevention and control
program. You may obtain further
information by examining the MCAI in
the AD docket.
Relevant Service Information
Viking Air Limited has issued DHC–
6 Twin Otter (Series 100/200/300)
Corrosion Prevention and Control
Manual PSM 1–6–5, Revision 3, dated
January 15, 2007; Viking Temporary
Revision, C57–10–18 (TR 2–2), dated
December 19, 2007; Viking Temporary
Revision, Part 3, Supplement 1 (TR 3–
2), dated December 19, 2007; Viking
Temporary Revision, Part 3,
Supplement 1 (TR 3–3), dated December
19, 2007; and Viking Temporary
Revision, Part 3, Supplement 1, (TR 3–
4), dated December 19, 2007. The
actions described in this service
information are intended to correct the
unsafe condition identified in the
MCAI.
FAA’s Determination and Requirements
of the Proposed AD
This product has been approved by
the aviation authority of another
country, and is approved for operation
in the United States. Pursuant to our
bilateral agreement with this State of
Design Authority, they have notified us
of the unsafe condition described in the
MCAI and service information
referenced above together with the fact
that the FAA has reviewed the service
experience and finds this action to be
necessary based upon that service
experience. We are proposing this AD
because we evaluated all information
and determined the unsafe condition
exists and is likely to exist or develop
on other products of the same type
design.
Differences Between This Proposed AD
and the MCAI or Service Information
We have reviewed the MCAI and
related service information and, in
general, agree with their substance. But
we might have found it necessary to use
different words from those in the MCAI
to ensure the AD is clear for U.S.
operators and is enforceable. In making
these changes, we do not intend to differ
substantively from the information
provided in the MCAI and related
service information.
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We might also have proposed
different actions in this AD from those
in the MCAI in order to follow FAA
policies. Any such differences are
highlighted in a NOTE within the
proposed AD.
Costs of Compliance
We estimate that this proposed AD
would affect about 162 products of U.S.
registry. We also estimate that it would
take about 40 work-hours per product to
comply with the basic requirements of
this proposed AD. The average labor
rate is $80 per work-hour.
Based on these figures, we estimate
the cost of the proposed AD on U.S.
operators to be $518,400, or $3,200 per
product.
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 determined that this proposed AD
would not have federalism implications
under Executive Order 13132. This
proposed AD would 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 this proposed 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.
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Federal Register / Vol. 73, No. 62 / Monday, March 31, 2008 / Proposed Rules
airplanes, serial numbers (SNs) 001 through
844, certificated in any category.
We prepared a regulatory evaluation
of the estimated costs to comply with
this proposed AD and placed it in the
AD docket.
Subject
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Safety.
The Proposed Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA proposes to amend 14 CFR part
39 as follows:
PART 39—AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new AD:
Viking Air Limited: Docket No. FAA–2008–
0367; Directorate Identifier 2007–CE–
089–AD.
Comments Due Date
(a) We must receive comments by April 30,
2008.
Affected ADs
(b) None.
(d) Air Transport Association of America
(ATA) Code 51: Structures.
Reason
(e) The mandatory continuing
airworthiness information (MCAI) states:
Service experience indicates that as aircraft
become older, they are more likely to exhibit
indications of corrosion. Transport Canada,
in conjunction with other airworthiness
authorities, has committed itself to ensuring
that additional maintenance programs for
older aircraft are developed and
implemented to minimize and control
corrosive deterioration that could jeopardize
airworthiness. Bombardier Inc., as
manufacturer of the DHC–6 aircraft, has
developed a Corrosion Prevention and
Control Program which identifies specific
areas that must be inspected to ensure the
structural integrity of the DHC–6 fleet.
Additionally, the FAA has reviewed the
service experience of the Viking Air Limited
Models DHC–6–1, DHC–6–100, DHC–6–200,
and DHC–6–300 airplanes and finds this
action to be necessary based upon that
service experience. The MCAI requires that
you do the corrosion tasks (CTs) required by
the corrosion prevention and control
program.
Actions and Compliance
(f) Unless already done, do the following
actions:
(1) Within the next 90 days after the
effective date of this AD, develop a schedule
Applicability
(c) This AD applies to Models DHC–6–1,
DHC–6–100, DHC–6–200, and DHC–6–300
16781
for doing the initial and repeat CTs required
in paragraph (f)(2) and (f)(3) of this AD.
(2) Initially, do all of the seven basic CTs
defined at paragraph 3.0 of Part 3 of DHC–
6 Twin Otter (Series 100/200/300) Corrosion
Prevention and Control Manual PSM 1–6–5,
Revision 3, dated January 15, 2007; and the
temporary revisions listed in Table 1, Viking
Temporary Revisions, of this AD:
TABLE 1.—VIKING TEMPORARY
REVISIONS
Temporary revision no. and date
(i) Viking Temporary Revision, C57–10–18
(TR 2–2), dated December 19, 2007.
(ii) Viking Temporary Revision, Part 3, Supplement 1 (TR 3–2), dated December 19,
2007.
(iii) Viking Temporary Revision, Part 3, Supplement 1 (TR 3–3), dated December 19,
2007.
(iv) Viking Temporary Revision, Part 3, Supplement 1, (TR 3–4), dated December 19,
2007.
Determine corrosion level following the
definitions contained in the introduction
section of DHC–6 Twin Otter (Series 100/
200/300) Corrosion Prevention and Control
Manual PSM 1–6–5, Revision 3, dated
January 15, 2007. The initial accomplishment
deadlines are specified in Table 2, Initial
Accomplishment Deadline, of this AD:
TABLE 2.—INITIAL ACCOMPLISHMENT DEADLINE
Applicable airplane serial numbers
Initial accomplishment deadline for all airplanes in applicable S/N range
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(i) 001 through 199 ...................................................................................
(ii) 200 through 439 ..................................................................................
(iii) 440 through 659 .................................................................................
(iv) 660 through 844 .................................................................................
(3) After the initial completion of each CT,
repeat each CT at the repeat interval (R)
specified in the manual. Determine corrosion
level following the definitions contained in
the introduction section of DHC–6 Twin
Otter (Series 100/200/300) Corrosion
Prevention and Control Manual PSM 1–6–5,
Revision 3, dated January 15, 2007.
(4) If any corrosion is found during any
action required by this AD, before further
flight, address corrosion following paragraph
4.0 of Part 3 of DHC–6 Twin Otter (Series
100/200/300) Corrosion Prevention and
Control Manual PSM 1–6–5, Revision 3,
dated January 15, 2007. All repairs are to be
done following a method approved by the
Manager, New York Aircraft Certification
Office or Transport Canada Civil Aviation (or
its delegated agent).
(5) Within 21 days after the finding of
Level 3 corrosion, submit a plan to the FAA
to identify a schedule for accomplishing the
applicable CTs on the remainder of the
airplanes in the operator’s fleet that are
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15
27
51
63
months
months
months
months
after
after
after
after
the
the
the
the
effective
effective
effective
effective
subject to this AD or data substantiating that
the Level 3 corrosion that was found is an
isolated case. The FAA may impose a
schedule other than proposed in the plan
upon finding that a change to the schedule
is needed to ensure that any other Level 3
corrosion is detected in a timely manner. For
the purposes of this paragraph, the FAA is
defined as the cognizant principal
maintenance inspector (PMI) for operators
that are assigned a PMI (e.g., part 121, 125,
and 135 operators) and the cognizant flight
standards district office for other operators
(e.g., part 91 operators).
(6) If any Level 3 corrosion is found while
doing any action required by this AD, within
21 days after the finding of Level 3 corrosion,
report the finding on the form in Figure 1 of
this AD and send it to Viking Air Limited,
VP Engineering, 9574 Hampden Road,
Sidney, British Columbia, Canada V8L 5V5.
(7) Incorporation of the initial and repeat
CTs into your FAA-approved maintenance
program constitutes terminating action for
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date
date
date
date
of
of
of
of
this
this
this
this
AD.
AD.
AD.
AD.
this AD. If this AD is terminated in this way,
then the maintenance program must be in
accordance with this AD.
FAA AD Differences
Note: This AD differs from the MCAI and/
or service information as follows: No
differences.
Other FAA AD Provisions
(g) The following provisions also apply to
this AD:
(1) Alternative Methods of Compliance
(AMOCs): The Manager, New York Aircraft
Certification Office (ACO), FAA, has the
authority to approve AMOCs for this AD, if
requested using the procedures found in 14
CFR 39.19. Send information to ATTN:
Richard Beckwith, Aerospace Engineer, FAA,
New York ACO, 1600 Stewart Avenue, Suite
410, Westbury, New York 11590; telephone:
(516) 228–7302; fax: (516) 568–2716. Before
using any approved AMOC on any airplane
to which the AMOC applies, notify your
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Federal Register / Vol. 73, No. 62 / Monday, March 31, 2008 / Proposed Rules
appropriate PMI in the FAA Flight Standards
District Office (FSDO), or lacking a PMI, your
local FSDO.
(2) Airworthy Product: For any requirement
in this AD to obtain corrective actions from
a manufacturer or other source, use these
actions if they are FAA-approved. Corrective
actions are considered FAA-approved if they
are approved by the State of Design Authority
(or their delegated agent). You are required
to assure the product is airworthy before it
is returned to service.
(3) Reporting Requirements: For any
reporting requirement in this AD, under the
provisions of the Paperwork Reduction Act
(44 U.S.C. 3501 et seq.), the Office of
Management and Budget (OMB) has
approved the information collection
requirements and has assigned OMB Control
Number 2120–0056.
DOCKET NO. FAA–2008–0367
INSPECTION REPORT
[Report only if you find level 3 corrosion]
1. Operator:
2. Telephone:
3. Airplane Model Number:
4. Airplane Serial Number:
5. Airplane Tail Number:
6. Date of Inspection:
7. Corrosion Task:
8. Description & Specific Location of Findings:
9. Additional Comments of Owner/Operator:
Send to:
Viking Air Limited
VP Engineering
9574 Hampden Road
Sidney, British Columbia, Canada
V8L 5V5
Telephone: 250.656.7227
Fax: 250.656.9702
Figure 1.
Related Information
DEPARTMENT OF TRANSPORTATION
(h) Refer to MCAI Transport Canada AD
No. CF–94–12R1, dated April 13, 1999; and
Transport Canada AD No. CF–99–11, dated
May 28, 1999; and DHC–6 Twin Otter (Series
100/200/300) Corrosion Prevention and
Control Manual PSM 1–6–5, Revision 3,
dated January 15, 2007; and the temporary
revisions listed in Table 1—Viking
Temporary Revisions, of this AD, for related
information.
jlentini on PROD1PC65 with PROPOSALS
David R. Showers,
Acting Manager, Small Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E8–6468 Filed 3–28–08; 8:45 am]
BILLING CODE 4910–13–P
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2008–0368; Directorate
Identifier 2008–CE–007–AD]
RIN 2120–AA64
Airworthiness Directives; Viking Air
Limited Models DHC–6–1, DHC–6–100,
DHC–6–200, and DHC–6–300 Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
SUMMARY: We propose to adopt a new
airworthiness directive (AD) for the
products listed above. This proposed
AD results from mandatory continuing
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Sfmt 4702
airworthiness information (MCAI)
originated by an aviation authority of
another country to identify and correct
an unsafe condition on an aviation
product. The MCAI describes the unsafe
condition as:
There have been reports of inter-rivet
cracking on several wing front spar adapter
assemblies (P/N C6WM1027–1) on the
horizontal and vertical flanges. It was
determined that the cracking was caused by
stress corrosion in the short transverse grain
initiated by local riveting induced stresses.
The proposed AD would require actions
that are intended to address the unsafe
condition described in the MCAI.
DATES: We must receive comments on
this proposed AD by April 30, 2008.
ADDRESSES: You may send comments by
any of the following methods:
• Federal eRulemaking Portal: Go to
https://www.regulations.gov. Follow the
instructions for submitting comments.
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]]>Agencies
[Federal Register Volume 73, Number 62 (Monday, March 31, 2008)]
[Proposed Rules]
[Pages 16779-16782]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-6468]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-0367; Directorate Identifier 2007-CE-089-AD]
RIN 2120-AA64
Airworthiness Directives; Viking Air Limited Models DHC-6-1, DHC-
6-100, DHC-6-200, and DHC-6-300 Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: We propose to adopt a new airworthiness directive (AD) for the
products listed above. This proposed AD results from mandatory
continuing airworthiness information (MCAI) originated by an aviation
authority of another country to identify and correct an unsafe
condition on an aviation product. The MCAI describes the unsafe
condition as:
Service experience indicates that as aircraft become older, they
are more likely to exhibit indications of corrosion.
Additionally, the FAA has reviewed the service experience and finds
this action to be necessary based upon that service experience. The
proposed AD would require actions that are intended to address the
unsafe condition described in the MCAI.
DATES: We must receive comments on this proposed AD by April 30, 2008.
ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to https://
www.regulations.gov. Follow the instructions for submitting comments.
Fax: (202) 493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590.
Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.
[[Page 16780]]
Examining the AD Docket
You may examine the AD docket on the Internet at https://
www.regulations.gov; or in person at the Docket Management Facility
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains this proposed AD, the regulatory
evaluation, any comments received, and other information. The street
address for the Docket Office (telephone (800) 647-5527) is in the
ADDRESSES section. Comments will be available in the AD docket shortly
after receipt.
FOR FURTHER INFORMATION CONTACT: Richard Beckwith, Aerospace Engineer,
FAA, New York Aircraft Certification Office,1600 Stewart Avenue, Suite
410, Westbury, New York 11590; telephone: (516) 228-7302; fax: (516)
568-2716.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include ``Docket No. FAA-2008-0367;
Directorate Identifier 2007-CE-089-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. We
will consider all comments received by the closing date and may amend
this proposed AD because of those comments.
We will post all comments we receive, without change, to https://
www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this proposed AD.
Discussion
Transport Canada, which is the aviation authority for Canada, has
issued AD No. CF-94-12R1, dated April 13, 1999; and AD No. CF-99-11,
dated May 28, 1999 (referred to after this as ``the MCAI''), to correct
an unsafe condition for the specified products. The MCAI states:
Service experience indicates that as aircraft become older, they
are more likely to exhibit indications of corrosion. Transport
Canada, in conjunction with other airworthiness authorities, has
committed itself to ensuring that additional maintenance programs
for older aircraft are developed and implemented to minimize and
control corrosive deterioration that could jeopardize airworthiness.
Bombardier Inc., as manufacturer of the DHC-6 aircraft, has
developed a Corrosion Prevention and Control Program which
identifies specific areas that must be inspected to ensure the
structural integrity of the DHC-6 fleet.
Additionally, the FAA has reviewed the service experience of the Viking
Air Limited Models DHC-6-1, DHC-6-100, DHC-6-200, and DHC-6-300
airplanes and finds this action to be necessary based upon that service
experience.
The MCAI requires that you do the corrosion tasks required by the
corrosion prevention and control program. You may obtain further
information by examining the MCAI in the AD docket.
Relevant Service Information
Viking Air Limited has issued DHC-6 Twin Otter (Series 100/200/300)
Corrosion Prevention and Control Manual PSM 1-6-5, Revision 3, dated
January 15, 2007; Viking Temporary Revision, C57-10-18 (TR 2-2), dated
December 19, 2007; Viking Temporary Revision, Part 3, Supplement 1 (TR
3-2), dated December 19, 2007; Viking Temporary Revision, Part 3,
Supplement 1 (TR 3-3), dated December 19, 2007; and Viking Temporary
Revision, Part 3, Supplement 1, (TR 3-4), dated December 19, 2007. The
actions described in this service information are intended to correct
the unsafe condition identified in the MCAI.
FAA's Determination and Requirements of the Proposed AD
This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to our bilateral agreement with this State of Design Authority, they
have notified us of the unsafe condition described in the MCAI and
service information referenced above together with the fact that the
FAA has reviewed the service experience and finds this action to be
necessary based upon that service experience. We are proposing this AD
because we evaluated all information and determined the unsafe
condition exists and is likely to exist or develop on other products of
the same type design.
Differences Between This Proposed AD and the MCAI or Service
Information
We have reviewed the MCAI and related service information and, in
general, agree with their substance. But we might have found it
necessary to use different words from those in the MCAI to ensure the
AD is clear for U.S. operators and is enforceable. In making these
changes, we do not intend to differ substantively from the information
provided in the MCAI and related service information.
We might also have proposed different actions in this AD from those
in the MCAI in order to follow FAA policies. Any such differences are
highlighted in a NOTE within the proposed AD.
Costs of Compliance
We estimate that this proposed AD would affect about 162 products
of U.S. registry. We also estimate that it would take about 40 work-
hours per product to comply with the basic requirements of this
proposed AD. The average labor rate is $80 per work-hour.
Based on these figures, we estimate the cost of the proposed AD on
U.S. operators to be $518,400, or $3,200 per product.
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 determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 this proposed
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.
[[Page 16781]]
We prepared a regulatory evaluation of the estimated costs to
comply with this proposed AD and placed it in the AD docket.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
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]
2. The FAA amends Sec. 39.13 by adding the following new AD:
Viking Air Limited: Docket No. FAA-2008-0367; Directorate Identifier
2007-CE-089-AD.
Comments Due Date
(a) We must receive comments by April 30, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Models DHC-6-1, DHC-6-100, DHC-6-200, and
DHC-6-300 airplanes, serial numbers (SNs) 001 through 844,
certificated in any category.
Subject
(d) Air Transport Association of America (ATA) Code 51:
Structures.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
Service experience indicates that as aircraft become older, they
are more likely to exhibit indications of corrosion. Transport
Canada, in conjunction with other airworthiness authorities, has
committed itself to ensuring that additional maintenance programs
for older aircraft are developed and implemented to minimize and
control corrosive deterioration that could jeopardize airworthiness.
Bombardier Inc., as manufacturer of the DHC-6 aircraft, has
developed a Corrosion Prevention and Control Program which
identifies specific areas that must be inspected to ensure the
structural integrity of the DHC-6 fleet.
Additionally, the FAA has reviewed the service experience of the
Viking Air Limited Models DHC-6-1, DHC-6-100, DHC-6-200, and DHC-6-
300 airplanes and finds this action to be necessary based upon that
service experience. The MCAI requires that you do the corrosion
tasks (CTs) required by the corrosion prevention and control
program.
Actions and Compliance
(f) Unless already done, do the following actions:
(1) Within the next 90 days after the effective date of this AD,
develop a schedule for doing the initial and repeat CTs required in
paragraph (f)(2) and (f)(3) of this AD.
(2) Initially, do all of the seven basic CTs defined at
paragraph 3.0 of Part 3 of DHC-6 Twin Otter (Series 100/200/300)
Corrosion Prevention and Control Manual PSM 1-6-5, Revision 3, dated
January 15, 2007; and the temporary revisions listed in Table 1,
Viking Temporary Revisions, of this AD:
Table 1.--Viking Temporary Revisions
------------------------------------------------------------------------
Temporary revision no. and date
-------------------------------------------------------------------------
(i) Viking Temporary Revision, C57-10-18 (TR 2-2), dated December 19,
2007.
(ii) Viking Temporary Revision, Part 3, Supplement 1 (TR 3-2), dated
December 19, 2007.
(iii) Viking Temporary Revision, Part 3, Supplement 1 (TR 3-3), dated
December 19, 2007.
(iv) Viking Temporary Revision, Part 3, Supplement 1, (TR 3-4), dated
December 19, 2007.
------------------------------------------------------------------------
Determine corrosion level following the definitions contained in the
introduction section of DHC-6 Twin Otter (Series 100/200/300)
Corrosion Prevention and Control Manual PSM 1-6-5, Revision 3, dated
January 15, 2007. The initial accomplishment deadlines are specified
in Table 2, Initial Accomplishment Deadline, of this AD:
Table 2.--Initial Accomplishment Deadline
------------------------------------------------------------------------
Initial accomplishment deadline
Applicable airplane serial numbers for all airplanes in applicable
S/N range
------------------------------------------------------------------------
(i) 001 through 199.................... 15 months after the effective
date of this AD.
(ii) 200 through 439................... 27 months after the effective
date of this AD.
(iii) 440 through 659.................. 51 months after the effective
date of this AD.
(iv) 660 through 844................... 63 months after the effective
date of this AD.
------------------------------------------------------------------------
(3) After the initial completion of each CT, repeat each CT at
the repeat interval (R) specified in the manual. Determine corrosion
level following the definitions contained in the introduction
section of DHC-6 Twin Otter (Series 100/200/300) Corrosion
Prevention and Control Manual PSM 1-6-5, Revision 3, dated January
15, 2007.
(4) If any corrosion is found during any action required by this
AD, before further flight, address corrosion following paragraph 4.0
of Part 3 of DHC-6 Twin Otter (Series 100/200/300) Corrosion
Prevention and Control Manual PSM 1-6-5, Revision 3, dated January
15, 2007. All repairs are to be done following a method approved by
the Manager, New York Aircraft Certification Office or Transport
Canada Civil Aviation (or its delegated agent).
(5) Within 21 days after the finding of Level 3 corrosion,
submit a plan to the FAA to identify a schedule for accomplishing
the applicable CTs on the remainder of the airplanes in the
operator's fleet that are subject to this AD or data substantiating
that the Level 3 corrosion that was found is an isolated case. The
FAA may impose a schedule other than proposed in the plan upon
finding that a change to the schedule is needed to ensure that any
other Level 3 corrosion is detected in a timely manner. For the
purposes of this paragraph, the FAA is defined as the cognizant
principal maintenance inspector (PMI) for operators that are
assigned a PMI (e.g., part 121, 125, and 135 operators) and the
cognizant flight standards district office for other operators
(e.g., part 91 operators).
(6) If any Level 3 corrosion is found while doing any action
required by this AD, within 21 days after the finding of Level 3
corrosion, report the finding on the form in Figure 1 of this AD and
send it to Viking Air Limited, VP Engineering, 9574 Hampden Road,
Sidney, British Columbia, Canada V8L 5V5.
(7) Incorporation of the initial and repeat CTs into your FAA-
approved maintenance program constitutes terminating action for this
AD. If this AD is terminated in this way, then the maintenance
program must be in accordance with this AD.
FAA AD Differences
Note: This AD differs from the MCAI and/or service information
as follows: No differences.
Other FAA AD Provisions
(g) The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, New
York Aircraft Certification Office (ACO), FAA, has the authority to
approve AMOCs for this AD, if requested using the procedures found
in 14 CFR 39.19. Send information to ATTN: Richard Beckwith,
Aerospace Engineer, FAA, New York ACO, 1600 Stewart Avenue, Suite
410, Westbury, New York 11590; telephone: (516) 228-7302; fax: (516)
568-2716. Before using any approved AMOC on any airplane to which
the AMOC applies, notify your
[[Page 16782]]
appropriate PMI in the FAA Flight Standards District Office (FSDO),
or lacking a PMI, your local FSDO.
(2) Airworthy Product: For any requirement in this AD to obtain
corrective actions from a manufacturer or other source, use these
actions if they are FAA-approved. Corrective actions are considered
FAA-approved if they are approved by the State of Design Authority
(or their delegated agent). You are required to assure the product
is airworthy before it is returned to service.
(3) Reporting Requirements: For any reporting requirement in
this AD, under the provisions of the Paperwork Reduction Act (44
U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has
approved the information collection requirements and has assigned
OMB Control Number 2120-0056.
Docket No. FAA-2008-0367
Inspection Report
[Report only if you find level 3 corrosion]
------------------------------------------------------------------------
------------------------------------------------------------------------
1. Operator: 2. Telephone:
------------------------------------------------------------------------
3. Airplane Model Number: 4. Airplane Serial Number:
------------------------------------------------------------------------
5. Airplane Tail Number: 6. Date of Inspection:
------------------------------------------------------------------------
7. Corrosion Task:
------------------------------------------------------------------------
8. Description & Specific Location of Findings:
------------------------------------------------------------------------
9. Additional Comments of Owner/Operator:
------------------------------------------------------------------------
Send to:
Viking Air Limited
VP Engineering
9574 Hampden Road
Sidney, British Columbia, Canada
V8L 5V5
Telephone: 250.656.7227
Fax: 250.656.9702
------------------------------------------------------------------------
Figure 1.
Related Information
(h) Refer to MCAI Transport Canada AD No. CF-94-12R1, dated
April 13, 1999; and Transport Canada AD No. CF-99-11, dated May 28,
1999; and DHC-6 Twin Otter (Series 100/200/300) Corrosion Prevention
and Control Manual PSM 1-6-5, Revision 3, dated January 15, 2007;
and the temporary revisions listed in Table 1--Viking Temporary
Revisions, of this AD, for related information.
David R. Showers,
Acting Manager, Small Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E8-6468 Filed 3-28-08; 8:45 am]
BILLING CODE 4910-13-P
