Airworthiness Directives; BAE Systems (Operations) Limited Model BAe 146 and Model Avro 146-RJ Airplanes, 55122-55124 [E7-19197]
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55122
Federal Register / Vol. 72, No. 188 / Friday, September 28, 2007 / Proposed Rules
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 airworthiness
directive:
McCauley Propeller Systems Alert Service
Bulletin No. ASB254, dated August 20, 2007.
(k) Remove cracked hubs from service and
any other propeller parts found cracked, and
return them within 10 days after inspection
to McCauley Propeller Systems, P.O. Box
7704, Wichita, KS 67277–7704, for further
evaluation.
McCauley Propeller Systems: Docket No.
FAA–2007–29176; Directorate Identifier
2007–NE–38–AD.
Comments Due Date
(a) The Federal Aviation Administration
(FAA) must receive comments on this
airworthiness directive (AD) action by
November 27, 2007.
Reporting Requirements
Applicability
(c) This AD applies to McCauley Propeller
Systems model 4HFR34C653/L106FA
propellers. These propellers are installed on,
but not limited to, British Aerospace
Jetstream 3201 airplanes.
Unsafe Condition
(d) This AD results from reports of 3 hubs
found cracked during propeller overhaul. We
are issuing this AD to prevent failure of the
propeller hub, which could cause blade
separation, damage to the airplane, and loss
of control of the airplane.
pwalker on PROD1PC71 with PROPOSALS
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.
(f) For propeller hubs with 6,000 or more
operating hours time-since-new (TSN) on the
effective date of this AD, perform the
procedures in paragraphs (h) through (k) of
this AD within 100 operating hours time-inservice (TIS) after the effective date of this
AD.
(g) For propeller hubs with fewer than
6,000 operating hours TSN on the effective
date of this AD, perform the procedures in
paragraphs (h) through (k) of this AD before
the propeller hub reaches 6,100 operating
hours TSN.
Onetime Propeller Hub Inspection
(h) Remove and disassemble the propeller,
and etch the propeller hub, using paragraphs
1.A. through 2.D. of the Accomplishment
Instructions of McCauley Propeller Systems
Alert Service Bulletin No. ASB254, dated
August 20, 2007.
(i) Perform a onetime fluorescent penetrant
inspection (FPI) of the propeller hub, using
paragraphs 3.A through 3.G. of the
Accomplishment Instructions of McCauley
Propeller Systems Alert Service Bulletin No.
ASB254, dated August 20, 2007.
(j) For hubs that pass the FPI, perform a
onetime eddy current inspection of the
propeller hub, using paragraphs 4.A. through
4.F. of the Accomplishment Instructions of
VerDate Aug<31>2005
18:45 Sep 27, 2007
Jkt 211001
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2007–29337; Directorate
Identifier 2007–NM–150–AD]
Previous Credit
(l) If you performed the onetime inspection
of the propeller hub using McCauley
Propeller Systems Service Bulletin No.
SB238A, or Alert Service Bulletin ASB254,
both dated August 20, 2007, before the
effective date of this AD, you have satisfied
the inspection requirements of this AD.
Affected ADs
(b) None.
DEPARTMENT OF TRANSPORTATION
(m) Record the hub inspection results on
reporting form, page 8, of McCauley Alert
Service Bulletin No. ASB254, dated August
20, 2007. Within 10 days after the inspection,
send the completed reporting form to
McCauley Propeller Systems, P.O. Box 7704,
Wichita, KS 67277–7704, telephone (316)
831–4021; fax (316) 831–3858.
(n) 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 contained in this AD and has
assigned OMB Control Number 2120–0056.
Interim Action
(o) These actions are interim actions and
we may take further rulemaking actions in
the future.
Alternative Methods of Compliance
(p) The Manager, Wichita 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.
Special Flight Permits
(q) Under 14 CFR part 39.23, we are
limiting the special flight permits for this AD
by the following conditions:
(1) The propeller must have no signs of
external oil leakage from the hub; and
(2) The propeller has no current reports of
abnormal operation or vibration.
Related Information
(r) None.
(s) Contact Jeff Janusz, Aerospace Engineer,
Wichita Aircraft Certification Office, FAA,
Small Airplane Directorate, 1801 Airport
Road, Wichita, KS 67209; e-mail:
jeff.janusz@faa.gov; telephone: (316) 946–
4148; fax: (316) 946–4107, for more
information about this AD.
Issued in Burlington, Massachusetts, on
September 24, 2007.
Thomas A. Boudreau,
Acting Manager, Engine and Propeller
Directorate, Aircraft Certification Service.
[FR Doc. E7–19194 Filed 9–27–07; 8:45 am]
BILLING CODE 4910–13–P
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RIN 2120–AA64
Airworthiness Directives; BAE
Systems (Operations) Limited Model
BAe 146 and Model Avro 146–RJ
Airplanes
Federal Aviation
Administration (FAA), 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:
Corrosion has been reported beneath the
heat shield which is located around the APU
(auxiliary power unit) exhaust outlet. Such
corrosion could result in the fuselage being
unable to sustain horizontal and vertical
stabiliser loads. This is considered as
potentially hazardous/catastrophic. * * *
The unsafe condition is that the
horizontal or vertical stabilizer might
collapse under excessive load, resulting
in loss of control of the airplane. 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 October 29, 2007.
ADDRESSES: You may send comments by
any of the following methods:
• DOT Docket Web Site: Go to
https://dms.dot.gov and follow the
instructions for sending your comments
electronically.
• 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: Room W12–140 on
the ground floor of the West Building,
1200 New Jersey Avenue, SE.,
Washington, DC, between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the
instructions for submitting comments.
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Federal Register / Vol. 72, No. 188 / Friday, September 28, 2007 / Proposed Rules
Examining the AD Docket
You may examine the AD docket on
the Internet at https://dms.dot.gov; or in
person at the Docket Operations office
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 Operations 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:
Todd Thompson, Aerospace Engineer,
International Branch, ANM–116, FAA,
Transport Airplane Directorate, 1601
Lind Avenue, SW., Renton, Washington
98057–3356; telephone (425) 227–1175;
fax (425) 227–1149.
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–2007–29337; Directorate Identifier
2007–NM–150–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 based on those comments.
We will post all comments we
receive, without change, to https://
dms.dot.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
pwalker on PROD1PC71 with PROPOSALS
The European Aviation Safety Agency
(EASA), which is the Technical Agent
for the Member States of the European
Community, has issued EASA
Airworthiness Directive 2007–0075,
dated March 20, 2007 (referred to after
this as ‘‘the MCAI’’), to correct an unsafe
condition for the specified products.
The MCAI states:
Corrosion has been reported beneath the
heat shield which is located around the APU
(auxiliary power unit) exhaust outlet. Such
corrosion could result in the fuselage being
unable to sustain horizontal and vertical
stabiliser loads. This is considered as
potentially hazardous/catastrophic. This AD
mandates inspections necessary to address
the identified unsafe condition.
The unsafe condition is that the
horizontal or vertical stabilizer might
collapse under excessive load, resulting
VerDate Aug<31>2005
17:39 Sep 27, 2007
Jkt 211001
in loss of control of the airplane.
Corrective actions include repetitive
detailed visual inspections for
corrosion, pitted fasteners, or pillowing
of the APU heat shield and surrounding
skin and, if applicable, removal of the
heat shield and repair. You may obtain
further information by examining the
MCAI in the AD docket.
Relevant Service Information
BAE Systems (Operations) Limited
has issued Inspection Service Bulletin
ISB.53–191, dated October 25, 2006.
The actions described in this service
information are intended to correct the
unsafe condition identified in the
MCAI.
FAA’s Determination and Requirements
of This 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 the State of
Design Authority, we have been notified
of the unsafe condition described in the
MCAI and service information
referenced above. We are proposing this
AD because we evaluated all pertinent
information and determined an unsafe
condition exists and is likely to exist or
develop on other products of the same
type design.
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 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
Based on the service information, we
estimate that this proposed AD would
affect about 1 product of U.S. registry.
We also estimate that it would take
about 2 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
$160, or $160 per product.
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55123
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.
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.
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55124
Federal Register / Vol. 72, No. 188 / Friday, September 28, 2007 / Proposed Rules
FAA AD Differences
DEPARTMENT OF TRANSPORTATION
2. The FAA amends § 39.13 by adding
the following new AD:
Federal Aviation Administration
BAE Systems (Operations) Limited
(Formerly British Aerospace Regional
Aircraft): Docket No. FAA–2007–29337;
Directorate Identifier 2007–NM–150–AD.
Note: This AD differs from the MCAI and/
or service information as follows: No
differences.
Other FAA AD Provisions
[Docket No. FAA–2007–29336; Directorate
Identifier 2007–NM–143–AD]
§ 39.13
[Amended]
Comments Due Date
(a) We must receive comments by October
29, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to BAE Systems
(Operations) Limited Model BAe 146 and
Model Avro 146–RJ airplanes; certificated in
any category; all models, all serial numbers.
Subject
(d) Air Transport Association (ATA) of
America Code 53: Fuselage.
Reason
(e) The mandatory continuing
airworthiness information (MCAI) states:
Corrosion has been reported beneath the
heat shield which is located around the APU
(auxiliary power unit) exhaust outlet. Such
corrosion could result in the fuselage being
unable to sustain horizontal and vertical
stabiliser loads. This is considered as
potentially hazardous/catastrophic. This AD
mandates inspections necessary to address
the identified unsafe condition.
The unsafe condition is that the horizontal
or vertical stabilizer might collapse under
excessive load, resulting in loss of control of
the airplane. Corrective actions include
repetitive detailed visual inspections for
corrosion, pitted fasteners, or pillowing of
the APU heat shield and surrounding skin
and, if applicable, removal of the heat shield
and repair.
pwalker on PROD1PC71 with PROPOSALS
Actions and Compliance
(f) Unless already done, do the following
actions.
(1) Within 12 months after the effective
date of this AD and thereafter at intervals not
to exceed 24 months, perform a detailed
visual inspection of the APU heat shield and
surrounding skin, in accordance with
paragraph 2.C. of BAE Systems (Operations)
Limited Inspection Service Bulletin ISB.53–
191, dated October 25, 2006.
(2) If any corrosion, pitted fastener, or
pillowing is found during any detailed visual
inspection required by paragraph (f)(1) of this
AD, before the next flight, remove the APU
heat shield and repair the affected area in
accordance with paragraph 2.D. of BAE
Systems (Operations) Limited Inspection
Service Bulletin ISB.53–191, dated October
25, 2006.
(3) For any airplane modified in
accordance with BAE Systems (Operations)
Limited Modification Service Bulletin SB.53–
193–60732A, dated November 1, 2006, the
repetitive interval specified in paragraph
(f)(1) of this AD may be extended to 48
months.
VerDate Aug<31>2005
17:39 Sep 27, 2007
Jkt 211001
(g) The following provisions also apply to
this AD:
(1) Alternative Methods of Compliance
(AMOCs): The Manager, International
Branch, ANM–116, 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: Todd Thompson,
Aerospace Engineer, International Branch,
ANM–116, FAA, Transport Airplane
Directorate, 1601 Lind Avenue, SW., Renton,
Washington 98057–3356; telephone (425)
227–1175; fax (425) 227–1149. 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,
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 Airworthiness Directive 2007–
0075, dated March 20, 2007; BAE Systems
(Operations) Limited Inspection Service
Bulletin ISB.53–191, dated October 25, 2006;
and BAE Systems (Operations) Limited
Modification Service Bulletin SB.53–193–
60732A, dated November 1, 2006; for related
information.
Issued in Renton, Washington, on
September 21, 2007.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E7–19197 Filed 9–27–07; 8:45 am]
BILLING CODE 4910–13–P
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14 CFR Part 39
RIN 2120–AA64
Airworthiness Directives; Airbus Model
A300, A310, and A300–600 Series
Airplanes
Federal Aviation
Administration (FAA), 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:
* * * accidents which occurred to inservice aircraft caused by the violent opening
of the passenger door related to excessive
residual pressure in the cabin.
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 October 29, 2007.
ADDRESSES: You may send comments by
any of the following methods:
• DOT Docket Web Site: Go to https://
dms.dot.gov and follow the instructions
for sending your comments
electronically.
• 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: Room W12–140 on
the ground floor of the West Building,
1200 New Jersey Avenue, SE.,
Washington, DC, between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the
instructions for submitting comments.
Examining the AD Docket
You may examine the AD docket on
the Internet at https://dms.dot.gov; or in
person at the Docket Operations office
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
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]]>Agencies
[Federal Register Volume 72, Number 188 (Friday, September 28, 2007)]
[Proposed Rules]
[Pages 55122-55124]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-19197]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2007-29337; Directorate Identifier 2007-NM-150-AD]
RIN 2120-AA64
Airworthiness Directives; BAE Systems (Operations) Limited Model
BAe 146 and Model Avro 146-RJ Airplanes
AGENCY: Federal Aviation Administration (FAA), 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:
Corrosion has been reported beneath the heat shield which is
located around the APU (auxiliary power unit) exhaust outlet. Such
corrosion could result in the fuselage being unable to sustain
horizontal and vertical stabiliser loads. This is considered as
potentially hazardous/catastrophic. * * *
The unsafe condition is that the horizontal or vertical stabilizer
might collapse under excessive load, resulting in loss of control of
the airplane. 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 October 29,
2007.
ADDRESSES: You may send comments by any of the following methods:
DOT Docket Web Site: Go to https://dms.dot.gov and follow
the instructions for sending your comments electronically.
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: Room W12-140 on the ground floor of the
West Building, 1200 New Jersey Avenue, SE., Washington, DC, between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the instructions for submitting comments.
[[Page 55123]]
Examining the AD Docket
You may examine the AD docket on the Internet at https://
dms.dot.gov; or in person at the Docket Operations office 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 Operations 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: Todd Thompson, Aerospace Engineer,
International Branch, ANM-116, FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425)
227-1175; fax (425) 227-1149.
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-2007-
29337; Directorate Identifier 2007-NM-150-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 based on those comments.
We will post all comments we receive, without change, to https://
dms.dot.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
The European Aviation Safety Agency (EASA), which is the Technical
Agent for the Member States of the European Community, has issued EASA
Airworthiness Directive 2007-0075, dated March 20, 2007 (referred to
after this as ``the MCAI''), to correct an unsafe condition for the
specified products. The MCAI states:
Corrosion has been reported beneath the heat shield which is
located around the APU (auxiliary power unit) exhaust outlet. Such
corrosion could result in the fuselage being unable to sustain
horizontal and vertical stabiliser loads. This is considered as
potentially hazardous/catastrophic. This AD mandates inspections
necessary to address the identified unsafe condition.
The unsafe condition is that the horizontal or vertical stabilizer
might collapse under excessive load, resulting in loss of control of
the airplane. Corrective actions include repetitive detailed visual
inspections for corrosion, pitted fasteners, or pillowing of the APU
heat shield and surrounding skin and, if applicable, removal of the
heat shield and repair. You may obtain further information by examining
the MCAI in the AD docket.
Relevant Service Information
BAE Systems (Operations) Limited has issued Inspection Service
Bulletin ISB.53-191, dated October 25, 2006. The actions described in
this service information are intended to correct the unsafe condition
identified in the MCAI.
FAA's Determination and Requirements of This 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 the State of Design Authority, we have
been notified of the unsafe condition described in the MCAI and service
information referenced above. We are proposing this AD because we
evaluated all pertinent information and determined an unsafe condition
exists and is likely to exist or develop on other products of the same
type design.
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 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
Based on the service information, we estimate that this proposed AD
would affect about 1 product of U.S. registry. We also estimate that it
would take about 2 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 $160, or $160 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.
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.
[[Page 55124]]
Sec. 39.13 [Amended]
2. The FAA amends Sec. 39.13 by adding the following new AD:
BAE Systems (Operations) Limited (Formerly British Aerospace
Regional Aircraft): Docket No. FAA-2007-29337; Directorate
Identifier 2007-NM-150-AD.
Comments Due Date
(a) We must receive comments by October 29, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to BAE Systems (Operations) Limited Model
BAe 146 and Model Avro 146-RJ airplanes; certificated in any
category; all models, all serial numbers.
Subject
(d) Air Transport Association (ATA) of America Code 53:
Fuselage.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
Corrosion has been reported beneath the heat shield which is
located around the APU (auxiliary power unit) exhaust outlet. Such
corrosion could result in the fuselage being unable to sustain
horizontal and vertical stabiliser loads. This is considered as
potentially hazardous/catastrophic. This AD mandates inspections
necessary to address the identified unsafe condition.
The unsafe condition is that the horizontal or vertical
stabilizer might collapse under excessive load, resulting in loss of
control of the airplane. Corrective actions include repetitive
detailed visual inspections for corrosion, pitted fasteners, or
pillowing of the APU heat shield and surrounding skin and, if
applicable, removal of the heat shield and repair.
Actions and Compliance
(f) Unless already done, do the following actions.
(1) Within 12 months after the effective date of this AD and
thereafter at intervals not to exceed 24 months, perform a detailed
visual inspection of the APU heat shield and surrounding skin, in
accordance with paragraph 2.C. of BAE Systems (Operations) Limited
Inspection Service Bulletin ISB.53-191, dated October 25, 2006.
(2) If any corrosion, pitted fastener, or pillowing is found
during any detailed visual inspection required by paragraph (f)(1)
of this AD, before the next flight, remove the APU heat shield and
repair the affected area in accordance with paragraph 2.D. of BAE
Systems (Operations) Limited Inspection Service Bulletin ISB.53-191,
dated October 25, 2006.
(3) For any airplane modified in accordance with BAE Systems
(Operations) Limited Modification Service Bulletin SB.53-193-60732A,
dated November 1, 2006, the repetitive interval specified in
paragraph (f)(1) of this AD may be extended to 48 months.
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,
International Branch, ANM-116, 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: Todd Thompson, Aerospace Engineer,
International Branch, ANM-116, FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone
(425) 227-1175; fax (425) 227-1149. 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, 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 Airworthiness
Directive 2007-0075, dated March 20, 2007; BAE Systems (Operations)
Limited Inspection Service Bulletin ISB.53-191, dated October 25,
2006; and BAE Systems (Operations) Limited Modification Service
Bulletin SB.53-193-60732A, dated November 1, 2006; for related
information.
Issued in Renton, Washington, on September 21, 2007.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E7-19197 Filed 9-27-07; 8:45 am]
BILLING CODE 4910-13-P
