Airworthiness Directives; Pilatus Aircraft Limited Model PC-12, PC-12/45, and PC-12/47 Airplanes, 2801-2803 [E8-479]
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Federal Register / Vol. 73, No. 11 / Wednesday, January 16, 2008 / Rules and Regulations
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,
the Office of Management and Budget (OMB)
has approved the information collection
requirements and has assigned OMB Control
Number 2120–0056.
Related Information
(h) Refer to MCAI Brazilian Airworthiness
Directives 2007–08–03 and 2007–08–04, both
effective August 27, 2007, and to EMBRAER
Service Bulletins 170–34–0019, dated
February 26, 2007; and 190–34–0009,
Revision 01, dated October 9, 2007; for
related information.
Material Incorporated by Reference
(i) You must use the service information
specified in Table 1 of this AD to do the
actions required by this AD, unless the AD
specifies otherwise.
(1) The Director of the Federal Register
approved the incorporation by reference of
this service information under 5 U.S.C.
552(a) and 1 CFR part 51.
(2) For service information identified in
this AD, contact Empresa Brasileira de
Aeronautica S.A. (EMBRAER), P.O. Box 343–
CEP 12.225, Sao Jose dos Campos–SP, Brazil.
(3) You may review copies 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: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
TABLE 1.—MATERIAL INCORPORATED BY REFERENCE
EMBRAER Service Bulletin
Revision level
170–34–0019 .......................................................................................................................................
190–34–0009 .......................................................................................................................................
Original ..................
01 ...........................
Issued in Renton, Washington, on January
4, 2008.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E8–469 Filed 1–13–08; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2007–0116 Directorate
Identifier 2007–CE–082–AD; Amendment
39–15333; AD 2008–02–03]
RIN 2120–AA64
Airworthiness Directives; Pilatus
Aircraft Limited Model PC–12, PC–12/
45, and PC–12/47 Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
AGENCY:
ebenthall on PRODPC61 with RULES
SUMMARY: We are adopting a new
airworthiness directive (AD) for the
products listed above. This AD results
from mandatory continuing
airworthiness information (MCAI)
issued 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:
It has been found that some of the above
mentioned MLG special bolts can be
defective. The problem is only applicable to
specific bolts with serial numbers that start
with the letters AT or have the supplier code
AT. Investigations revealed that there is a
possibility for hydrogen embrittlement which
occurs during the manufacture process.
VerDate Aug<31>2005
15:01 Jan 15, 2008
Jkt 214001
Components in this condition can decrease
the specific fatigue life and could lead to
MLG collapse during operation with
consequent loss of airplane control.
We are issuing this AD to require
actions to correct the unsafe condition
on these products.
DATES: This AD becomes effective
February 20, 2008.
On February 20, 2008, the Director of
the Federal Register approved the
incorporation by reference of certain
publications listed in this AD.
ADDRESSES: You may examine the AD
docket on the Internet at https://
www.regulations.gov or in person at
Document Management Facility, U.S.
Department of Transportation, Docket
Operations, M–30, West Building
Ground Floor, Room W12–140, 1200
New Jersey Avenue, SE., Washington,
DC 20590.
FOR FURTHER INFORMATION CONTACT:
Doug Rudolph, Aerospace Engineer,
FAA, Small Airplane Directorate, 901
Locust, Room 301, Kansas City,
Missouri 64106; telephone: (816) 329–
4059; fax: (816) 329–4090.
SUPPLEMENTARY INFORMATION:
Date
February 26, 2007.
October 9, 2007.
possibility for hydrogen embrittlement which
occurs during the manufacture process.
Components in this condition can decrease
the specific fatigue life and could lead to
MLG collapse during operation with
consequent loss of airplane control.
In order to correct the situation, this AD
requires the identification of all MLG special
bolts to determine if the bolts have serial
numbers that start with the letters AT or have
the supplier code AT and the replacement of
affected special bolts.
Comments
We gave the public the opportunity to
participate in developing this AD. We
considered the comment received.
We issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would
apply to the specified products. That
NPRM was published in the Federal
Register on October 31, 2007 (72 FR
61580). That NPRM proposed to correct
an unsafe condition for the specified
products. The MCAI states:
Comment Issue: Revision of Service
Bulletin No. 32–020
PILATUS AIRCRAFT LTD. comments
they have revised the applicable service
information, and the latest version is
PILATUS AIRCRAFT LTD. Service
Bulletin No. 32–020, Rev. No. 1, dated
November 22, 2007. They request we
incorporate the revised version of the
service bulletin into our AD.
We agree that we should incorporate
the revised version of the service
bulletin into our AD. We have discussed
the revised service bulletin with the
Federal Office of Civil Aviation (FOCA),
which is the aviation authority for
Switzerland, and they also agree we
should incorporate the revised version
of the service bulletin into our AD.
We will change the final rule AD
action to incorporate PILATUS
AIRCRAFT LTD. Service Bulletin No.
32–020, Rev. No. 1, dated November 22,
2007.
It has been found that some of the above
mentioned MLG special bolts can be
defective. The problem is only applicable to
specific bolts with serial numbers that start
with the letters AT or have the supplier code
AT. Investigations revealed that there is a
Conclusion
We reviewed the available data,
including the comment received, and
determined that air safety and the
public interest require adopting the AD
Discussion
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Federal Register / Vol. 73, No. 11 / Wednesday, January 16, 2008 / Rules and Regulations
with the changes described previously.
We determined that these changes will
not increase the economic burden on
any operator or increase the scope of the
AD.
Differences Between This 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 required 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 AD.
Costs of Compliance
We estimate that this AD will affect
480 products of U.S. registry. We also
estimate that it will take about .5 workhour per product to comply with basic
requirements of this AD. The average
labor rate is $80 per work-hour.
Based on these figures, we estimate
the cost of this AD to the U.S. operators
to be $19,200, or $40 per product.
In addition, we estimate that any
necessary follow-on actions would take
about 4 work-hours and require parts
costing $2,300, for a cost of $2,620 per
product. We have no way of
determining the number of products
that may need these actions.
ebenthall on PRODPC61 with RULES
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.
VerDate Aug<31>2005
15:01 Jan 15, 2008
Jkt 214001
Regulatory Findings
We 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 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 and placed it in the AD Docket.
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 the NPRM, 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.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference.
Adoption of the Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as
follows:
I
PART 39—AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:
I
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new AD:
I
2008–02–03 Pilatus Aircraft Limited:
Amendment 39–15333; Docket No.
FAA–2007–0116; Directorate Identifier
2007–CE–082–AD.
Effective Date
(a) This airworthiness directive (AD)
becomes effective February 20, 2008.
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Affected ADs
(b) None.
Applicability
(c) This AD applies to PC–12, PC–12/45,
and PC–12/47 airplanes, serial numbers 101
through 749, certificated in any category; that
have not incorporated the actions in their
entirety of PILATUS AIRCRAFT LTD. PC–12
Service Bulletin No: 32–020, dated July 24,
2007; and with one or more of the following
installed:
(1) Main landing gear (MLG) assemblies
delivered before December 31, 2006, with the
following part numbers (P/N): 532.10.12.037,
532.10.12.038, 532.10.12.041, 532.10.12.042,
532.10.12.043, 532.10.12.044, 532.10.12.047,
532.10.12.048, 532.10.12.049, 532.10.12.050,
532.10.12.051, or 532.10.12.052;
(2) Special bolts P/N 532.10.12.110,
532.10.12.205, 532.10.12.077, or
532.10.12.202 delivered before December 31,
2006; or
(3) Modification kit numbers
500.50.12.267, 500.50.12.286, or
500.50.12.299 delivered before December 31,
2006.
Subject
(d) Air Transport Association of America
(ATA) Code 32: Landing Gear.
Reason
(e) The mandatory continuing
airworthiness information (MCAI) states:
It has been found that some of the above
mentioned MLG special bolts can be
defective. The problem is only applicable to
specific bolts with serial numbers that start
with the letters AT or have the supplier code
AT. Investigations revealed that there is a
possibility for hydrogen embrittlement which
occurs during the manufacture process.
Components in this condition can decrease
the specific fatigue life and could lead to
MLG collapse during operation with
consequent loss of airplane control.
In order to correct the situation, this AD
requires the identification of all MLG special
bolts to determine if the bolts have serial
numbers that start with the letters AT or have
the supplier code AT and the replacement of
affected special bolts.
Actions and Compliance
(f) Unless already done, do the following
actions:
(1) Within the next 100 hours time-inservice (TIS) after February 20, 2008 (the
effective date of this AD) or within the next
3 months after February 20, 2008 (the
effective date of this AD), whichever occurs
first, inspect the special bolts that attach the
MLG retraction actuators and the special
bolts that attach the shock absorbers to the
MLG assemblies to identify the serial
numbers that start with the letters AT or have
the supplier code AT following PILATUS
AIRCRAFT LTD. PC–12 Service Bulletin No:
32–020, Rev. No. 1, dated November 22,
2007.
(2) If during the inspection required in
paragraph (f)(1) of this AD any special bolts
with the serial number starting with the
letters AT or special bolts with the supplier
code AT are found, before further flight,
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Federal Register / Vol. 73, No. 11 / Wednesday, January 16, 2008 / Rules and Regulations
replace the specified bolts with new bolts
with the new part numbers in all MLG
assemblies following PILATUS AIRCRAFT
LTD. PC–12 Service Bulletin No: 32–020,
Rev. No. 1, dated November 22, 2007.
(3) As of February 20, 2008 (the effective
date of this AD), do not install any of the
special bolts that have serial numbers that
start with the letters AT or have the supplier
code AT on Models PC–12, PC–12/45, and
PC–12/47 airplanes as indicated in PILATUS
AIRCRAFT LTD. PC–12 Service Bulletin No:
32–020, Rev. No. 1, dated November 22,
2007. MLG assemblies, special bolts, and
modifications kits, as referenced in
paragraphs (c)(1), (c)(2), and (c)(3) of this AD,
delivered from PILATUS AIRCRAFT LTD. on
or after December 31, 2006, will not
incorporate the unsafe condition.
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, Standards Office,
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: Doug Rudolph, Aerospace Engineer,
FAA, Small Airplane Directorate, 901 Locust,
Room 301, Kansas City, Missouri 64106;
telephone: (816) 329–4059; fax: (816) 329–
4090. Before using any approved AMOC on
any airplane to which the AMOC applies,
notify your appropriate principal inspector
(PI) in the FAA Flight Standards District
Office (FSDO), or lacking a PI, 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 FAAapproved 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.
ebenthall on PRODPC61 with RULES
Related Information
(h) Refer to Federal Office of Civil Aviation
(FOCA) AD HB–2007–382, dated August 27,
2007; and PILATUS AIRCRAFT LTD. PC–12
Service Bulletin No: 32–020, Rev. No. 1,
dated November 22, 2007, for related
information.
Material Incorporated by Reference
(i) You must use PILATUS AIRCRAFT
LTD. PC–12 Service Bulletin No: 32–020,
Rev. No. 1, dated November 22, 2007, to do
the actions required by this AD, unless the
AD specifies otherwise.
(1) The Director of the Federal Register
approved the incorporation by reference of
VerDate Aug<31>2005
15:01 Jan 15, 2008
Jkt 214001
this service information under 5 U.S.C.
552(a) and 1 CFR part 51.
(2) For service information identified in
this AD, contact PILATUS AIRCRAFT LTD.,
Customer Support Manager, CH–6371
STANS, Switzerland; telephone: +41 41 619
6208; fax: +41 41 619 7311; e-mail:
SupportPC12@pilatus-aircraft.com.
(3) You may review copies at the FAA,
Central Region, Office of the Regional
Counsel, 901 Locust, Room 506, Kansas City,
Missouri 64106; 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: https://www.archives.gov/federal-register/
cfr/ibr-locations.html.
Issued in Kansas City, Missouri, on January
8, 2008.
John Colomy,
Acting Manager, Small Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E8–479 Filed 1–15–08; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2007–27926; Directorate
Identifier 2006–NM–050–AD; Amendment
39–15316; AD 2007–26–14]
RIN 2120–AA64
Airworthiness Directives; Airbus Model
A300 Airplanes; and Model A300 B4–
600, B4–600R, and F4–600R Series
Airplanes, and Model C4–605R Variant
F Airplanes (Collectively Called A300–
600 Series Airplanes)
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
AGENCY:
SUMMARY: The FAA is superseding an
existing airworthiness directive (AD),
which applies to all Airbus Model A300
B2 and B4 series airplanes; and all
Model A300 B4–600, B4–600R, and F4–
600R (collectively called A300–600)
series airplanes. That AD currently
requires repetitive inspections to detect
cracking of the upper radius of the
forward fitting of frame 47, and repair
if necessary. This new AD retains those
requirements, but reduces inspection
thresholds and repetitive intervals, and
adds related investigative and corrective
actions. This AD also provides an
optional terminating action for the
repetitive inspections only for airplanes
with cracking that is within certain
limits, and a post-repair inspection
program following the optional
terminating action. This AD results from
reports of additional cracking in
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2803
airplanes that were inspected in
accordance with the existing AD. We are
issuing this AD to detect and correct
fatigue cracking of the left and right
upper radius at frame 47, which could
propagate and result in reduced
structural integrity of the airplane.
DATES: This AD becomes effective
February 20, 2008.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in the AD
as of February 20, 2008.
On May 1, 2003 (68 FR 14894, March
27, 2003), the Director of the Federal
Register approved the incorporation by
reference of certain publications listed
in the AD.
ADDRESSES: For service information
identified in this AD, contact Airbus,
1 Rond Point Maurice Bellonte, 31707
Blagnac Cedex, France.
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 AD, the regulatory
evaluation, any comments received, and
other information. The address for the
Docket Office (telephone 800–647–5527)
is the Document Management Facility,
U.S. Department of Transportation,
Docket Operations, M–30, West
Building Ground Floor, Room W12–140,
1200 New Jersey Avenue, SE.,
Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT:
Thomas Stafford, Aerospace Engineer,
International Branch, ANM–116, FAA,
Transport Airplane Directorate, 1601
Lind Avenue, SW., Renton, Washington
98057–3356; telephone (425) 227–1622;
fax (425) 227–1149.
SUPPLEMENTARY INFORMATION:
Discussion
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that
supersedes AD 2003–06–04, amendment
39–13091 (68 FR 14894, March 27,
2003). The existing AD applies to all
Airbus Model A300 B2 and B4 series
airplanes; and all Model A300 B4–600,
B4–600R, and F4–600R (collectively
called A300–600) series airplanes. That
NPRM was published in the Federal
Register on April 20, 2007 (72 FR
19818). That NPRM proposed to
continue to require repetitive
inspections to detect cracking of the
upper radius of the forward fitting of
frame 47, and repair if necessary. That
NPRM also proposed to reduce
E:\FR\FM\16JAR1.SGM
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]]>Agencies
[Federal Register Volume 73, Number 11 (Wednesday, January 16, 2008)]
[Rules and Regulations]
[Pages 2801-2803]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-479]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2007-0116 Directorate Identifier 2007-CE-082-AD;
Amendment 39-15333; AD 2008-02-03]
RIN 2120-AA64
Airworthiness Directives; Pilatus Aircraft Limited Model PC-12,
PC-12/45, and PC-12/47 Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for the
products listed above. This AD results from mandatory continuing
airworthiness information (MCAI) issued 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:
It has been found that some of the above mentioned MLG special
bolts can be defective. The problem is only applicable to specific
bolts with serial numbers that start with the letters AT or have the
supplier code AT. Investigations revealed that there is a
possibility for hydrogen embrittlement which occurs during the
manufacture process.
Components in this condition can decrease the specific fatigue life
and could lead to MLG collapse during operation with consequent loss
of airplane control.
We are issuing this AD to require actions to correct the unsafe
condition on these products.
DATES: This AD becomes effective February 20, 2008.
On February 20, 2008, the Director of the Federal Register approved
the incorporation by reference of certain publications listed in this
AD.
ADDRESSES: You may examine the AD docket on the Internet at https://
www.regulations.gov or in person at Document Management Facility, U.S.
Department of Transportation, Docket Operations, M-30, West Building
Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC
20590.
FOR FURTHER INFORMATION CONTACT: Doug Rudolph, Aerospace Engineer, FAA,
Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri
64106; telephone: (816) 329-4059; fax: (816) 329-4090.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would apply to the specified products.
That NPRM was published in the Federal Register on October 31, 2007 (72
FR 61580). That NPRM proposed to correct an unsafe condition for the
specified products. The MCAI states:
It has been found that some of the above mentioned MLG special
bolts can be defective. The problem is only applicable to specific
bolts with serial numbers that start with the letters AT or have the
supplier code AT. Investigations revealed that there is a
possibility for hydrogen embrittlement which occurs during the
manufacture process.
Components in this condition can decrease the specific fatigue
life and could lead to MLG collapse during operation with consequent
loss of airplane control.
In order to correct the situation, this AD requires the
identification of all MLG special bolts to determine if the bolts
have serial numbers that start with the letters AT or have the
supplier code AT and the replacement of affected special bolts.
Comments
We gave the public the opportunity to participate in developing
this AD. We considered the comment received.
Comment Issue: Revision of Service Bulletin No. 32-020
PILATUS AIRCRAFT LTD. comments they have revised the applicable
service information, and the latest version is PILATUS AIRCRAFT LTD.
Service Bulletin No. 32-020, Rev. No. 1, dated November 22, 2007. They
request we incorporate the revised version of the service bulletin into
our AD.
We agree that we should incorporate the revised version of the
service bulletin into our AD. We have discussed the revised service
bulletin with the Federal Office of Civil Aviation (FOCA), which is the
aviation authority for Switzerland, and they also agree we should
incorporate the revised version of the service bulletin into our AD.
We will change the final rule AD action to incorporate PILATUS
AIRCRAFT LTD. Service Bulletin No. 32-020, Rev. No. 1, dated November
22, 2007.
Conclusion
We reviewed the available data, including the comment received, and
determined that air safety and the public interest require adopting the
AD
[[Page 2802]]
with the changes described previously. We determined that these changes
will not increase the economic burden on any operator or increase the
scope of the AD.
Differences Between This 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 required 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 AD.
Costs of Compliance
We estimate that this AD will affect 480 products of U.S. registry.
We also estimate that it will take about .5 work-hour per product to
comply with basic requirements of this AD. The average labor rate is
$80 per work-hour.
Based on these figures, we estimate the cost of this AD to the U.S.
operators to be $19,200, or $40 per product.
In addition, we estimate that any necessary follow-on actions would
take about 4 work-hours and require parts costing $2,300, for a cost of
$2,620 per product. We have no way of determining the number of
products that may need these actions.
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 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 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 and placed it in the AD Docket.
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 the NPRM, 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.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference.
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 AD:
2008-02-03 Pilatus Aircraft Limited: Amendment 39-15333; Docket No.
FAA-2007-0116; Directorate Identifier 2007-CE-082-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective February
20, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to PC-12, PC-12/45, and PC-12/47 airplanes,
serial numbers 101 through 749, certificated in any category; that
have not incorporated the actions in their entirety of PILATUS
AIRCRAFT LTD. PC-12 Service Bulletin No: 32-020, dated July 24,
2007; and with one or more of the following installed:
(1) Main landing gear (MLG) assemblies delivered before December
31, 2006, with the following part numbers (P/N): 532.10.12.037,
532.10.12.038, 532.10.12.041, 532.10.12.042, 532.10.12.043,
532.10.12.044, 532.10.12.047, 532.10.12.048, 532.10.12.049,
532.10.12.050, 532.10.12.051, or 532.10.12.052;
(2) Special bolts P/N 532.10.12.110, 532.10.12.205,
532.10.12.077, or 532.10.12.202 delivered before December 31, 2006;
or
(3) Modification kit numbers 500.50.12.267, 500.50.12.286, or
500.50.12.299 delivered before December 31, 2006.
Subject
(d) Air Transport Association of America (ATA) Code 32: Landing
Gear.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
It has been found that some of the above mentioned MLG special
bolts can be defective. The problem is only applicable to specific
bolts with serial numbers that start with the letters AT or have the
supplier code AT. Investigations revealed that there is a
possibility for hydrogen embrittlement which occurs during the
manufacture process.
Components in this condition can decrease the specific fatigue life
and could lead to MLG collapse during operation with consequent loss
of airplane control.
In order to correct the situation, this AD requires the
identification of all MLG special bolts to determine if the bolts
have serial numbers that start with the letters AT or have the
supplier code AT and the replacement of affected special bolts.
Actions and Compliance
(f) Unless already done, do the following actions:
(1) Within the next 100 hours time-in-service (TIS) after
February 20, 2008 (the effective date of this AD) or within the next
3 months after February 20, 2008 (the effective date of this AD),
whichever occurs first, inspect the special bolts that attach the
MLG retraction actuators and the special bolts that attach the shock
absorbers to the MLG assemblies to identify the serial numbers that
start with the letters AT or have the supplier code AT following
PILATUS AIRCRAFT LTD. PC-12 Service Bulletin No: 32-020, Rev. No. 1,
dated November 22, 2007.
(2) If during the inspection required in paragraph (f)(1) of
this AD any special bolts with the serial number starting with the
letters AT or special bolts with the supplier code AT are found,
before further flight,
[[Page 2803]]
replace the specified bolts with new bolts with the new part numbers
in all MLG assemblies following PILATUS AIRCRAFT LTD. PC-12 Service
Bulletin No: 32-020, Rev. No. 1, dated November 22, 2007.
(3) As of February 20, 2008 (the effective date of this AD), do
not install any of the special bolts that have serial numbers that
start with the letters AT or have the supplier code AT on Models PC-
12, PC-12/45, and PC-12/47 airplanes as indicated in PILATUS
AIRCRAFT LTD. PC-12 Service Bulletin No: 32-020, Rev. No. 1, dated
November 22, 2007. MLG assemblies, special bolts, and modifications
kits, as referenced in paragraphs (c)(1), (c)(2), and (c)(3) of this
AD, delivered from PILATUS AIRCRAFT LTD. on or after December 31,
2006, will not incorporate the unsafe condition.
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,
Standards Office, 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: Doug Rudolph, Aerospace Engineer, FAA, Small
Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri
64106; telephone: (816) 329-4059; fax: (816) 329-4090. Before using
any approved AMOC on any airplane to which the AMOC applies, notify
your appropriate principal inspector (PI) in the FAA Flight
Standards District Office (FSDO), or lacking a PI, 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.
Related Information
(h) Refer to Federal Office of Civil Aviation (FOCA) AD HB-2007-
382, dated August 27, 2007; and PILATUS AIRCRAFT LTD. PC-12 Service
Bulletin No: 32-020, Rev. No. 1, dated November 22, 2007, for
related information.
Material Incorporated by Reference
(i) You must use PILATUS AIRCRAFT LTD. PC-12 Service Bulletin
No: 32-020, Rev. No. 1, dated November 22, 2007, to do the actions
required by this AD, unless the AD specifies otherwise.
(1) The Director of the Federal Register approved the
incorporation by reference of this service information under 5
U.S.C. 552(a) and 1 CFR part 51.
(2) For service information identified in this AD, contact
PILATUS AIRCRAFT LTD., Customer Support Manager, CH-6371 STANS,
Switzerland; telephone: +41 41 619 6208; fax: +41 41 619 7311; e-
mail: SupportPC12@pilatus-aircraft.com.
(3) You may review copies at the FAA, Central Region, Office of
the Regional Counsel, 901 Locust, Room 506, Kansas City, Missouri
64106; 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: https://www.archives.gov/federal-
register/cfr/ibr-locations.html.
Issued in Kansas City, Missouri, on January 8, 2008.
John Colomy,
Acting Manager, Small Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E8-479 Filed 1-15-08; 8:45 am]
BILLING CODE 4910-13-P
