Airworthiness Directives; Aircraft Industries a.s. (Type Certificate G60EU previously held by LETECKÉ ZÁVODY a.s. and LET Aeronautical Works) Model L 23 Super Blanik Sailplane, 78929-78931 [E8-30405]
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Federal Register / Vol. 73, No. 248 / Wednesday, December 24, 2008 / Rules and Regulations
Installation Prohibition
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
a new airworthiness directive,
Amendment 39–15772, to read as
follows:
■
2008–26–06 Rolls-Royce Corporation
(Formerly Allison Engine Company):
Amendment 39–15772. Docket No.
FAA–2008–0975; Directorate Identifier
2008–NE–29–AD.
Effective Date
(a) This airworthiness directive (AD)
becomes effective January 8, 2009.
DEPARTMENT OF TRANSPORTATION
(g) After the effective date of this AD, don’t
return to service, any HPT stage 2 wheel that
was installed in any RRC AE 3007A series
engine removed as a result of paragraph (f)
of this AD, unless the HPT stage 2 wheel was
inspected as specified in RRC Alert Service
Bulletin (ASB) AE 3007A-A–72–367, dated
September 5, 2008.
Alternative Methods of Compliance
(h) The Manager, Chicago Aircraft
Certification Office, has the authority to
approve alternative methods of compliance
for this AD if requested using the procedures
found in 14 CFR 39.19.
(i) Alternative Methods of Compliance
(AMOCs) currently approved for AD 2008–
19–51 will remain in effect until the effective
date for this AD. After that date the AMOCs
will expire.
Special Flight Permits
Affected ADs
(b) This AD supersedes emergency AD
2008–19–51.
Applicability
(c) This AD applies to Rolls-Royce
Corporation (RRC) AE 3007A series turbofan
engines with high-pressure turbine (HPT)
stage 2 wheels, part numbers (P/Ns)
23065892, 23069116, 23069438, 23069592,
23074462, 23074644, 23075345, 23084520, or
23084781, installed. These engines are
installed on, but not limited to, Empresa
Brasileira de Aeronautica S. A. (EMBRAER)
EMB–135 and EMB–145 airplanes.
Unsafe Condition
(d) This AD results from reports of cracked
HPT stage 2 wheels. We are issuing this AD
to detect cracks in the HPT stage 2 wheel,
which could result in a possible uncontained
failure of the HPT stage 2 wheel and damage
to the airplane.
Compliance
(e) You are responsible for having the
actions required by this AD performed within
the compliance times specified unless the
actions have already been done.
Removing Engines From Service
(f) For engines with an HPT stage 2 wheel,
P/Ns 23065892, 23069116, 23069438,
23069592, 23074462, 23074644, 23075345,
23084520, or 23084781, remove the engine
from service by the cycles-in-service (CIS)
specified in Table 1 of this AD.
(j) Under 14 CFR part 39.23, we are
limiting the special flight permits for this AD
by restricting the flight to essential flight
crew only.
Related Information
(k) Contact Kyri Zaroyiannis, Aerospace
Engineer, Chicago Aircraft Certification
Office, Small Airplane Directorate, FAA,
2300 E. Devon Ave., Des Plaines, IL 60018;
e-mail: kyri.zaroyiannis@faa.gov; telephone
(847) 294–7836; fax (847) 294–7834, for more
information about this AD.
(l) Rolls-Royce Corporation ASB AE
3007A-A–72–367, dated September 5, 2008,
contains information on performing ECIs on
HPT stage 2 wheels. Contact Rolls-Royce
Corporation, P.O. Box 420, Speed Code U15,
Indianapolis, IN 46206–0420; e-mail:
indy.pubs.services@rolls-royce.com, for a
copy of this service information.
Material Incorporated by Reference
(m) None.
Issued in Burlington, Massachusetts, on
December 12, 2008.
Francis A. Favara,
Manager, Engine and Propeller Directorate,
Aircraft Certification Service.
[FR Doc. E8–30051 Filed 12–23–08; 8:45 am]
BILLING CODE 4910–13–P
TABLE 1—COMPLIANCE TIMES FOR
ENGINE REMOVAL FOR ECI OF THE
HPT STAGE 2 WHEELS
pwalker on PROD1PC71 with RULES
If the HPT stage 2
wheel has accumulated on the effective
date of this AD:
16,200 cycles-sincenew (CSN) or more.
15,800 to 16,199 CSN
15,500 to 15,799 CSN
VerDate Aug<31>2005
Then remove the engine from service:
Within 150 CIS.
Within 300 CIS.
Within 450 CIS.
19:28 Dec 23, 2008
Jkt 217001
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78929
Sfmt 4700
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2008–1138; Directorate
Identifier 2008–CE–059–AD; Amendment
39–15778; AD 2008–26–12]
RIN 2120–AA64
Airworthiness Directives; Aircraft
Industries a.s. (Type Certificate G60EU
´ ´
previously held by LETECKE ZAVODY
a.s. and LET Aeronautical Works)
Model L 23 Super Blanik Sailplane
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:
This Airworthiness Directive (AD) is
prompted by the discovery on L 23 SUPER–
BLANIK sailplanes of cracks in zones where
the front and aft control levers attach the
connecting rod designated as ‘‘control
bridge’’ on the relevant Illustrated Parts
Catalogues (IPC). If left uncorrected cracks
could propagate and lead to the breakage of
the connecting rod with subsequent loss of
control of the sailplane.
We are issuing this AD to require
actions to correct the unsafe condition
on these products.
DATES: This AD becomes effective
January 28, 2009.
On January 28, 2009, the Director of
the Federal Register approves 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: Greg
Davison, Aerospace Engineer, FAA,
Small Airplane Directorate, 901 Locust,
Room 301, Kansas City, Missouri 64106;
telephone: (816) 329–4130; fax: (816)
329–4090.
SUPPLEMENTARY INFORMATION:
E:\FR\FM\24DER1.SGM
24DER1
78930
Federal Register / Vol. 73, No. 248 / Wednesday, December 24, 2008 / Rules and Regulations
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 29 (73 FR 64282).
That NPRM proposed to correct an
unsafe condition for the specified
products. The MCAI states:
Based on these figures, we estimate
the cost of this AD on U.S. operators to
be $16,800, or $160 per product.
In addition, we estimate that any
necessary follow-on actions will take
about 7 work-hours and require parts
costing $2,000, for a cost of $2,560 per
product. We have no way of
determining the number of products
that may need these actions.
This Airworthiness Directive (AD) is
prompted by the discovery on L 23 SUPER–
BLANIK sailplanes of cracks in zones where
the front and aft control levers attach the
connecting rod designated as ‘‘control
bridge’’ on the relevant Illustrated Parts
Catalogues (IPC). If left uncorrected cracks
could propagate and lead to the breakage of
the connecting rod with subsequent loss of
control of the sailplane.
For the reasons described above, this AD
requires an inspection for cracks of the
control bridge and its replacement, as
necessary. In addition, this AD requires an
update of the aircraft Maintenance Manual
(MM) to incorporate repetitive inspections of
the control bridge.
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.
You may obtain further information
by examining the MCAI in the AD
docket.
Comments
We gave the public the opportunity to
participate in developing this AD. We
received no comments on the NPRM or
on the determination of the cost to the
public.
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.
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.
Costs of Compliance
We estimate that this AD will affect
105 products of U.S. registry. We also
estimate that it will take about 2 workhours per product to comply with the
basic requirements of this AD. The
average labor rate is $80 per work-hour.
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
pwalker on PROD1PC71 with RULES
Conclusion
We reviewed the available data and
determined that air safety and the
public interest require adopting the AD
as proposed.
VerDate Aug<31>2005
19:28 Dec 23, 2008
Jkt 217001
PO 00000
Frm 00014
Fmt 4700
Sfmt 4700
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,
Safety.
Adoption of the Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 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:
■
2008–26–12 Aircraft Industries a.s. (Type
Certificate G60EU previously held by
´ ´
LETECKE ZAVODY a.s. and LET
Aeronautical Works): Amendment 39–
15778; Docket No. FAA–2008–1138;
Directorate Identifier 2008–CE–059–AD.
Effective Date
(a) This airworthiness directive (AD)
becomes effective January 28, 2009.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Model L 23 Super
Blanik sailplanes, all serial numbers,
certificated in any category.
Subject
(d) Air Transport Association of America
(ATA) Code 27: Flight Controls.
Reason
(e) The mandatory continuing
airworthiness information (MCAI) states:
This Airworthiness Directive (AD) is
prompted by the discovery on L 23 SUPER–
BLANIK sailplanes of cracks in zones where
the front and aft control levers attach the
connecting rod designated as ‘‘control
bridge’’ on the relevant Illustrated Parts
Catalogues (IPC). If left uncorrected cracks
could propagate and lead to the breakage of
the connecting rod with subsequent loss of
control of the sailplane.
For the reasons described above, this AD
requires an inspection for cracks of the
control bridge and its replacement, as
necessary. In addition, this AD requires an
update of the aircraft Maintenance Manual
(MM) to incorporate repetitive inspections of
the control bridge.
E:\FR\FM\24DER1.SGM
24DER1
Federal Register / Vol. 73, No. 248 / Wednesday, December 24, 2008 / Rules and Regulations
Actions and Compliance
(f) Unless already done, do the following
actions:
(1) Within the next 3 months after January
28, 2009 (the effective date of this AD) and
repetitively thereafter at intervals not to
exceed 12 months, visually inspect the
control bridge in areas of juncture with the
two control sticks for cracks. Do the
inspection following paragraph A of LET
Aircraft Industries, a.s. Mandatory Bulletin
MB No. L23/050a, Revision No. 2, dated
September 12, 2007, except use a 10X
magnifier and do a dye penetrant inspection
following the procedures in chapter 5,
section 5, of FAA Advisory Circular AC
43.13–1B CHG 1, dated September 27, 2001.
(2) If cracks are found in the control bridge
bedding during any inspection required in
paragraph (f)(1) of this AD, before further
flight, replace the defective control bridge
bedding, Dwg. No. A740 371N, in the control
bridge assembly, Dwg. No. A740 370N,
following LET Aircraft Industries, a.s.
Mandatory Bulletin MB No. L23/050a,
Revision No. 2, dated September 12, 2007;
and Appendix No. 1, ‘‘Replacement of
Bearings 608 CSN 024630 at Control Bridge
Dwg. No. A740 370N in a Bedding Dwg. No.
A740 371N,’’ to LET Aircraft Industries, a.s.
Mandatory Bulletin MB No. L23/050a,
Revision No. 2, dated September 12, 2007.
(3) Doing the replacement required in
paragraph (f)(2) of this AD terminates the 12month repetitive inspection required in
paragraph (f)(1) of this AD. After the
replacement required in paragraph (f)(2) of
this AD, perform subsequent inspections on
the new control bridge assembly according to
LET Aircraft Industries, a.s. Documentation
Bulletin No.: L23/020 d, dated August 6,
2007.
FAA AD Differences
pwalker on PROD1PC71 with RULES
Note: This AD differs from the MCAI and/
or service information as follows:
(1) The service information requires a
visual inspection with a 6X magnifier. We are
requiring a dye penetrant inspection and a
10X magnifier to detect cracks that could go
undetected using only a 6X magnifier.
(2) The MCAI requires updating the
maintenance manuals to add repetitive
inspections of the control bridge. Since the
maintenance manual is only one way of
establishing a maintenance program, the only
way we can mandate these repetitive
inspections is through an AD action. We have
made these repetitive inspections part of this
AD.
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: Greg Davison, Aerospace Engineer,
FAA, Small Airplane Directorate, 901 Locust,
Room 301, Kansas City, Missouri 64106;
telephone: (816) 329–4130; fax: (816) 329–
4090. Before using any approved AMOC on
any sailplane to which the AMOC applies,
notify your appropriate principal inspector
VerDate Aug<31>2005
19:28 Dec 23, 2008
Jkt 217001
(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 MCAI European Aviation
Safety Agency (EASA) AD No. 2007–0261,
dated October 2, 2007; LET Aircraft
Industries, a.s. Mandatory Bulletin MB No.
L23/050a, Revision No. 2, dated September
12, 2007; Appendix No. 1, ‘‘Replacement of
Bearings 608 CSN 024630 at Control Bridge
Dwg. No. A740 370N in a Bedding Dwg. No.
A740 371N,’’ to LET Aircraft Industries, a.s.
Mandatory Bulletin MB No. L23/050a,
Revision No. 2, dated September 12, 2007;
LET Aircraft Industries, a.s. Documentation
Bulletin No.: L23/020 d, dated August 6,
2007; and FAA Advisory Circular AC 43.13–
1B CHG 1, dated September 27, 2001, for
related information. FAA Advisory Circular
AC 43.13–1B CHG 1, dated September 27,
2001, can be found on the Internet at
https://rgl.faa.gov/.
Material Incorporated by Reference
(i) You must use LET Aircraft Industries,
a.s. Mandatory Bulletin MB No. L23/050a,
Revision No. 2, dated September 12, 2007;
Appendix No. 1, ‘‘Replacement of Bearings
608 CSN 024630 at Control Bridge Dwg. No.
A740 370N in a Bedding Dwg. No. A740
371N,’’ to LET Aircraft Industries, a.s.
Mandatory Bulletin MB No. L23/050a,
Revision No. 2, dated September 12, 2007;
and LET Aircraft Industries, a.s.
Documentation Bulletin No.: L23/020 d,
dated August 6, 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 Aircraft Industries, a.s. Na
´
Zahonech 1177, 686 04 Kunovice, Czech
Republic; phone: +420–572816002; fax:
+420–572816006; Internet:
https://www.let.cz/.
(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.
PO 00000
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78931
Issued in Kansas City, Missouri, on
December 16, 2008.
John Colomy,
Acting Manager, Small Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E8–30405 Filed 12–23–08; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2008–1250; Directorate
Identifier 2008–SW–49–AD; Amendment 39–
15755; AD 2008–17–51]
RIN 2120–AA64
Airworthiness Directives; MD
Helicopters, Inc. Model MD900
Helicopters
AGENCY: Federal Aviation
Administration, DOT.
ACTION: Final rule; request for
comments.
SUMMARY: This document publishes in
the Federal Register an amendment
adopting Airworthiness Directive (AD)
2008–17–51, which was sent previously
to all known U.S. owners and operators
of MD Helicopters, Inc. (MDHI) Model
MD900 helicopters by individual letters.
This AD requires, before further flight,
fluorescent magnetic particle inspecting
the aft threads of the forward directional
control cable (control cable) for a crack
and replacing the control cable with an
airworthy part if you find a crack. If you
do not find a crack, this AD requires
that you demagnetize the cable threads
until you reach a certain gauss level.
This AD also requires visually
inspecting the aft cable attach bracket
for a crack and for interference with
movement of the control cable or for
deformation of the aft cable attach
bracket. If a crack or interference with
movement of the control cable or
deformation of the aft cable attach
bracket exists, this AD requires
replacing the bracket with an airworthy
part. This AD also requires modifying
the control cable conduit and the
rotating cone control rod and
identifying the rotating cone control rod
with a certain part number. This
amendment is prompted by three
reports of in-flight failure of the control
cable and loss of yaw control resulting
in emergency landings and subsequent
damage to the helicopter. The actions
specified by this AD are intended to
prevent loss of yaw control and
subsequent loss of control of the
helicopter.
E:\FR\FM\24DER1.SGM
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]]>Agencies
[Federal Register Volume 73, Number 248 (Wednesday, December 24, 2008)]
[Rules and Regulations]
[Pages 78929-78931]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-30405]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-1138; Directorate Identifier 2008-CE-059-AD;
Amendment 39-15778; AD 2008-26-12]
RIN 2120-AA64
Airworthiness Directives; Aircraft Industries a.s. (Type
Certificate G60EU previously held by LETECK[Eacute] Z[Aacute]VODY a.s.
and LET Aeronautical Works) Model L 23 Super Blanik Sailplane
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:
This Airworthiness Directive (AD) is prompted by the discovery
on L 23 SUPER-BLANIK sailplanes of cracks in zones where the front
and aft control levers attach the connecting rod designated as
``control bridge'' on the relevant Illustrated Parts Catalogues
(IPC). If left uncorrected cracks could propagate and lead to the
breakage of the connecting rod with subsequent loss of control of
the sailplane.
We are issuing this AD to require actions to correct the unsafe
condition on these products.
DATES: This AD becomes effective January 28, 2009.
On January 28, 2009, the Director of the Federal Register approves
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: Greg Davison, Aerospace Engineer, FAA,
Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri
64106; telephone: (816) 329-4130; fax: (816) 329-4090.
SUPPLEMENTARY INFORMATION:
[[Page 78930]]
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 29 (73 FR
64282). That NPRM proposed to correct an unsafe condition for the
specified products. The MCAI states:
This Airworthiness Directive (AD) is prompted by the discovery
on L 23 SUPER-BLANIK sailplanes of cracks in zones where the front
and aft control levers attach the connecting rod designated as
``control bridge'' on the relevant Illustrated Parts Catalogues
(IPC). If left uncorrected cracks could propagate and lead to the
breakage of the connecting rod with subsequent loss of control of
the sailplane.
For the reasons described above, this AD requires an inspection
for cracks of the control bridge and its replacement, as necessary.
In addition, this AD requires an update of the aircraft Maintenance
Manual (MM) to incorporate repetitive inspections of the control
bridge.
You may obtain further information by examining the MCAI in the AD
docket.
Comments
We gave the public the opportunity to participate in developing
this AD. We received no comments on the NPRM or on the determination of
the cost to the public.
Conclusion
We reviewed the available data and determined that air safety and
the public interest require adopting the AD as proposed.
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 105 products of U.S. registry.
We also estimate that it will take about 2 work-hours per product to
comply with the 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 on U.S.
operators to be $16,800, or $160 per product.
In addition, we estimate that any necessary follow-on actions will
take about 7 work-hours and require parts costing $2,000, for a cost of
$2,560 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, Safety.
Adoption of the Amendment
0
Accordingly, under the authority delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by adding the following new AD:
2008-26-12 Aircraft Industries a.s. (Type Certificate G60EU
previously held by LETECK[Eacute] Z[Aacute]VODY a.s. and LET
Aeronautical Works): Amendment 39-15778; Docket No. FAA-2008-1138;
Directorate Identifier 2008-CE-059-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective January
28, 2009.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Model L 23 Super Blanik sailplanes, all
serial numbers, certificated in any category.
Subject
(d) Air Transport Association of America (ATA) Code 27: Flight
Controls.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
This Airworthiness Directive (AD) is prompted by the discovery
on L 23 SUPER-BLANIK sailplanes of cracks in zones where the front
and aft control levers attach the connecting rod designated as
``control bridge'' on the relevant Illustrated Parts Catalogues
(IPC). If left uncorrected cracks could propagate and lead to the
breakage of the connecting rod with subsequent loss of control of
the sailplane.
For the reasons described above, this AD requires an inspection
for cracks of the control bridge and its replacement, as necessary.
In addition, this AD requires an update of the aircraft Maintenance
Manual (MM) to incorporate repetitive inspections of the control
bridge.
[[Page 78931]]
Actions and Compliance
(f) Unless already done, do the following actions:
(1) Within the next 3 months after January 28, 2009 (the
effective date of this AD) and repetitively thereafter at intervals
not to exceed 12 months, visually inspect the control bridge in
areas of juncture with the two control sticks for cracks. Do the
inspection following paragraph A of LET Aircraft Industries, a.s.
Mandatory Bulletin MB No. L23/050a, Revision No. 2, dated September
12, 2007, except use a 10X magnifier and do a dye penetrant
inspection following the procedures in chapter 5, section 5, of FAA
Advisory Circular AC 43.13-1B CHG 1, dated September 27, 2001.
(2) If cracks are found in the control bridge bedding during any
inspection required in paragraph (f)(1) of this AD, before further
flight, replace the defective control bridge bedding, Dwg. No. A740
371N, in the control bridge assembly, Dwg. No. A740 370N, following
LET Aircraft Industries, a.s. Mandatory Bulletin MB No. L23/050a,
Revision No. 2, dated September 12, 2007; and Appendix No. 1,
``Replacement of Bearings 608 CSN 024630 at Control Bridge Dwg. No.
A740 370N in a Bedding Dwg. No. A740 371N,'' to LET Aircraft
Industries, a.s. Mandatory Bulletin MB No. L23/050a, Revision No. 2,
dated September 12, 2007.
(3) Doing the replacement required in paragraph (f)(2) of this
AD terminates the 12-month repetitive inspection required in
paragraph (f)(1) of this AD. After the replacement required in
paragraph (f)(2) of this AD, perform subsequent inspections on the
new control bridge assembly according to LET Aircraft Industries,
a.s. Documentation Bulletin No.: L23/020 d, dated August 6, 2007.
FAA AD Differences
Note: This AD differs from the MCAI and/or service information
as follows:
(1) The service information requires a visual inspection with a
6X magnifier. We are requiring a dye penetrant inspection and a 10X
magnifier to detect cracks that could go undetected using only a 6X
magnifier.
(2) The MCAI requires updating the maintenance manuals to add
repetitive inspections of the control bridge. Since the maintenance
manual is only one way of establishing a maintenance program, the
only way we can mandate these repetitive inspections is through an
AD action. We have made these repetitive inspections part of this
AD.
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: Greg Davison, Aerospace Engineer, FAA, Small
Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri
64106; telephone: (816) 329-4130; fax: (816) 329-4090. Before using
any approved AMOC on any sailplane 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 MCAI European Aviation Safety Agency (EASA) AD No.
2007-0261, dated October 2, 2007; LET Aircraft Industries, a.s.
Mandatory Bulletin MB No. L23/050a, Revision No. 2, dated September
12, 2007; Appendix No. 1, ``Replacement of Bearings 608 CSN 024630
at Control Bridge Dwg. No. A740 370N in a Bedding Dwg. No. A740
371N,'' to LET Aircraft Industries, a.s. Mandatory Bulletin MB No.
L23/050a, Revision No. 2, dated September 12, 2007; LET Aircraft
Industries, a.s. Documentation Bulletin No.: L23/020 d, dated August
6, 2007; and FAA Advisory Circular AC 43.13-1B CHG 1, dated
September 27, 2001, for related information. FAA Advisory Circular
AC 43.13-1B CHG 1, dated September 27, 2001, can be found on the
Internet at https://rgl.faa.gov/.
Material Incorporated by Reference
(i) You must use LET Aircraft Industries, a.s. Mandatory
Bulletin MB No. L23/050a, Revision No. 2, dated September 12, 2007;
Appendix No. 1, ``Replacement of Bearings 608 CSN 024630 at Control
Bridge Dwg. No. A740 370N in a Bedding Dwg. No. A740 371N,'' to LET
Aircraft Industries, a.s. Mandatory Bulletin MB No. L23/050a,
Revision No. 2, dated September 12, 2007; and LET Aircraft
Industries, a.s. Documentation Bulletin No.: L23/020 d, dated August
6, 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
Aircraft Industries, a.s. Na Z[aacute]honech 1177, 686 04 Kunovice,
Czech Republic; phone: +420-572816002; fax: +420-572816006;
Internet: https://www.let.cz/.
(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 December 16, 2008.
John Colomy,
Acting Manager, Small Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E8-30405 Filed 12-23-08; 8:45 am]
BILLING CODE 4910-13-P
