Airworthiness Directives; Bombardier Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) Airplanes, Model CL-600-2D15 (Regional Jet Series 705) Airplanes, and Model CL-600-2D24 (Regional Jet Series 900) Airplanes, 57268-57270 [E9-26684]

Download as PDF 57268 Federal Register / Vol. 74, No. 213 / Thursday, November 5, 2009 / Proposed Rules any approved AMOC on any airplane to which the AMOC applies, notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate, or lacking a principal inspector, your local Flight Standards District Office. The AMOC approval letter must specifically reference this AD. (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 Civil Aviation Authority of Israel (CAAI) Airworthiness Directive 25–04– 05–09R1, dated November 12, 2008; and Gulfstream Service Bulletin 150–25–055, dated October 28, 2008; for related information. Issued in Renton, Washington, on October 28, 2009. Stephen P. Boyd, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E9–26683 Filed 11–4–09; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2009–1033; Directorate Identifier 2009–NM–104–AD] RIN 2120–AA64 Airworthiness Directives; Bombardier Model CL–600–2C10 (Regional Jet Series 700, 701, & 702) Airplanes, Model CL–600–2D15 (Regional Jet Series 705) Airplanes, and Model CL– 600–2D24 (Regional Jet Series 900) Airplanes erowe on DSK5CLS3C1PROD with PROPOSALS-1 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 that would supersede an existing AD. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify VerDate Nov<24>2008 14:37 Nov 04, 2009 Jkt 220001 and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Following inflight test deployments on CL–600–2B19 aircraft, several Air-Driven generators (ADGs) failed to come on-line. Investigation revealed that, as a result of a wiring anomaly that had not been detected during ADG manufacture, a short circuit was possible between certain internal wires and their metallic over-braided shields, which could result in the ADG not providing power when deployed. The unsafe condition is that failure of the ADG could lead to loss of several functions essential for safe flight. 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 December 21, 2009. You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments. • Fax: (202) 493–2251. • Mail: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue, SE., Washington, DC 20590. • Hand Delivery: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–40, 1200 New Jersey Avenue, SE., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this proposed AD, contact Bombardier, ˆ Inc., 400 Cote-Vertu Road West, Dorval, ´ Quebec H4S 1Y9, Canada; telephone 514–855–5000; fax 514–855–7401; e-mail thd.crj@aero.bombardier.com; Internet https://www.bombardier.com. You may review copies of the referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425–227–1221 or 425–227–1152. ADDRESSES: Examining the AD Docket You may examine the AD docket on the Internet at https:// www.regulations.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 PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Fabio Buttitta, Aerospace Engineer, Airframe and Mechanical Systems Branch, ANE–171, FAA, New York Aircraft Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone (516) 228– 7303; fax (516) 794–5531. 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–2009–1033; Directorate Identifier 2009–NM–104–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 have lengthened the 30-day comment period for proposed ADs that address MCAI originated by aviation authorities of other countries to provide adequate time for interested parties to submit comments. The comment period for these proposed ADs is now typically 45 days, which is consistent with the comment period for domestic transport ADs. We will post all comments we receive, without change, to https:// www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this proposed AD. Discussion On March 6, 2009, we issued AD 2009–06–18, Amendment 39–15855 (74 FR 13094, March 26, 2009). That AD required actions intended to address an unsafe condition on the products listed above. Since we issued AD 2009–06–18, we have received notice that additional suspect air-driven generators may have been installed between the effective date of Canadian Airworthiness Directive CF–2008–10, and the effective date of the equivalent FAA AD, AD 2009–06– 18. Therefore, we have determined that the actions required by paragraph (f)(1) of AD 2009–06–18 are also required for Model CL–600–2C10 airplanes having serial numbers 10266 through 10273, and Model CL–600–2D15 and CL–600– 2D24 airplanes having serial numbers 15163 through 15223. E:\FR\FM\05NOP1.SGM 05NOP1 Federal Register / Vol. 74, No. 213 / Thursday, November 5, 2009 / Proposed Rules 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 304 products of U.S. registry. The actions that are required by AD 2009–06–18 and retained in this proposed AD take about 5 work-hours per product, at an average labor rate of $80 per work hour. Required parts cost about $0 per product. Where the service information lists required parts costs that are covered under warranty, we have assumed that there will be no charge for these costs. As we do not control warranty coverage for affected parties, some parties may incur costs higher than estimated here. Based on these figures, we estimate the cost of the proposed AD on U.S. operators to be $121,600, or $400 per product. 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, Incorporation by reference, 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: erowe on DSK5CLS3C1PROD with PROPOSALS-1 Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: VerDate Nov<24>2008 14:37 Nov 04, 2009 Jkt 220001 PO 00000 Frm 00006 Fmt 4702 Sfmt 4702 57269 Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by removing Amendment 39–15855 (74 FR 13094, March 26, 2009) and adding the following new AD: Bombardier, Inc. (Formerly Canadair): Docket No. FAA–2009–1033; Directorate Identifier 2009–NM–104–AD. Comments Due Date (a) We must receive comments by December 21, 2009. Affected ADs (b) The proposed AD supersedes AD 2009– 06–18, Amendment 39–15855. Applicability (c) This AD applies to Bombardier Model CL–600–2C10 (Regional Jet Series 700, 701, & 702) airplanes, having serial numbers (SNs) 10004 and subsequent; and Model CL–600– 2D15 (Regional Jet Series 705) airplanes and Model CL–600–2D24 (Regional Jet Series 900) airplanes, having SN 15002 and subsequent; certificated in any category. Subject (d) Air Transport Association (ATA) of America Code 24: Electrical power. Reason (e) The mandatory continuing airworthiness information (MCAI) states: Following in-flight test deployments on CL–600–2B19 aircraft, several Air-Driven generators (ADGs) failed to come on-line. Investigation revealed that, as a result of a wiring anomaly that had not been detected during ADG manufacture, a short circuit was possible between certain internal wires and their metallic over-braided shields, which could result in the ADG not providing power when deployed. This directive mandates checking of the ADG and modification of the ADG internal wiring, if required. It also prohibits future installation of unmodified ADGs. The unsafe condition is that failure of the ADG could lead to loss of several functions essential for safe flight. Restatement of Requirements of AD 2009– 06–18 (f) Unless already done, do the following actions. (1) For airplanes identified in Table 1 of this AD: Within 12 months after April 30, 2009 (the effective date of AD 2009–06–18), inspect the serial number of the installed ADG. A review of airplane maintenance records is acceptable in lieu of this inspection if the serial number of the ADG can be conclusively determined from that review. E:\FR\FM\05NOP1.SGM 05NOP1 57270 Federal Register / Vol. 74, No. 213 / Thursday, November 5, 2009 / Proposed Rules TABLE 1—BOMBARDIER AIRPLANE IDENTIFICATION Model Serial Nos. CL–600–2C10 airplanes ................................................................................................................................................. CL–600–2D15 and CL–600–2D24 airplanes ................................................................................................................. (i) If the serial number is not listed in paragraph 1.A of Bombardier Service Bulletin 670BA–24–015, Revision A, dated December 18, 2006, no further action is required by this AD. (ii) If the serial number is listed in paragraph 1.A of Bombardier Service Bulletin 670BA–24–015, Revision A, dated December 18, 2006 (‘‘the service bulletin’’), within 12 months after April 30, 2009, inspect the ADG identification plate and, as applicable, do the actions of paragraph (f)(1)(ii)(A) or (f)(1)(ii)(B) of this AD. (A) If the identification plate is marked with the symbol ‘‘24–2,’’ no further action is required by this AD. (B) If the identification plate is not marked with the symbol ‘‘24–2,’’ modify the ADG wiring in accordance with the Accomplishment Instructions of the service bulletin. (2) For all Model CL–600–2C10 airplanes having SN 10004 and subsequent, and Model CL–600–2D15 and CL–600–2D24 airplanes having SN 15002 and subsequent: As of April 30, 2009, no ADG part number 604–90800– 19 (761339E), having SN 0101 through 0132, 0134 through 0167, 0169 through 0358, 0360 through 0438, 0440 through 0456, 0458 through 0467, 0469, 0471 through 0590, 0592 through 0597, 0599 through 0745, 0747 through 1005, or 1400 through 1439, may be installed on any airplane, unless the identification plate of the ADG is identified with the symbol ‘‘24–2.’’ Note 1: Bombardier Service Bulletin 670BA–24–015, Revision A, dated December 18, 2006, refers to Hamilton Sundstrand Service Bulletin ERPS10AG–24–2, dated February 19, 2004, for further information on identifying the symbol ‘‘24–2.’’ 10004 through 10265. 15002 through 15162. (3) Actions done before April 30, 2009, according to Bombardier Service Bulletin 670BA–24–015, dated May 17, 2004, are considered acceptable for compliance with the corresponding actions specified in paragraph (f)(1) of this AD, provided the ADG has not been replaced since those actions were done. New Requirements of This AD: Actions and Compliance (g) Unless already done, do the following actions. (1) For airplanes identified in Table 2 of this AD: Within 12 months after the effective date of this AD, inspect the serial number of the installed ADG. A review of airplane maintenance records is acceptable in lieu of this inspection if the serial number of the ADG can be conclusively determined from that review. TABLE 2—ADDITIONAL BOMBARDIER AIRPLANE IDENTIFICATION Model Serial Nos. erowe on DSK5CLS3C1PROD with PROPOSALS-1 CL–600–2C10 airplanes ................................................................................................................................................. CL–600–2D15 and CL–600–2D24 airplanes ................................................................................................................. (i) If the serial number is not listed in paragraph 1.A of Bombardier Service Bulletin 670BA–24–015, Revision A, dated December 18, 2006, no further action is required by this AD. (ii) If the serial number is listed in paragraph 1.A of Bombardier Service Bulletin 670BA–24–015, Revision A, dated December 18, 2006 (‘‘the service bulletin’’), within 12 months after the effective date of this AD, inspect the ADG identification plate and, as applicable, do the actions of paragraph (g)(1)(ii)(A) or (g)(1)(ii)(B) of this AD. (A) If the identification plate is marked with the symbol ‘‘24–2’’, no further action is required by this AD. (B) If the identification plate is not marked with the symbol ‘‘24–2’’, modify the ADG wiring in accordance with the Accomplishment Instructions of the service bulletin. (2) Actions done before the effective date of this AD according to Bombardier Service Bulletin 670BA–24–015, dated May 17, 2004, are considered acceptable for compliance with the corresponding actions specified in paragraph (g)(1) of this AD, provided the ADG has not been replaced since those actions were done. FAA AD Differences Note 2: This AD differs from the MCAI and/or service information as follows: The MCAI specifies to inspect Model CL–600– 2C10 airplanes having SNs 10004 through 10265 and Model CL–600–2D15 and CL– 600–2D24 airplanes having SNs 15002 VerDate Nov<24>2008 14:37 Nov 04, 2009 Jkt 220001 through 15162. This AD also specifies to inspect Model CL–600–2C10 airplanes having serial numbers 10266 through 10273, and Model CL–600–2D15 and CL–600–2D24 airplanes having serial numbers 15163 through 15223. Other FAA AD Provisions (h) The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification 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: Fabio Buttitta, Aerospace Engineer, Airframe and Mechanical Systems Branch, ANE–171, FAA, New York Aircraft Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone (516) 228–7303; fax (516) 794–5531. Before using any approved AMOC on any airplane to which the AMOC applies, notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate, or lacking a principal inspector, your local Flight Standards District Office. The AMOC approval letter must specifically reference this AD. (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 PO 00000 Frm 00007 Fmt 4702 Sfmt 4702 10266 through 10273. 15163 through 15223. 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 (i) Refer to MCAI Canadian Airworthiness Directive CF–2008–10, dated February 5, 2008; and Bombardier Service Bulletin 670BA–24–015, Revision A, dated December 18, 2006; for related information. Issued in Renton, Washington, on October 29, 2009. Stephen P. Boyd, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E9–26684 Filed 11–4–09; 8:45 am] BILLING CODE 4910–13–P E:\FR\FM\05NOP1.SGM 05NOP1

Agencies

[Federal Register Volume 74, Number 213 (Thursday, November 5, 2009)]
[Proposed Rules]
[Pages 57268-57270]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E9-26684]

-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2009-1033; Directorate Identifier 2009-NM-104-AD]
RIN 2120-AA64

Airworthiness Directives; Bombardier Model CL-600-2C10 (Regional
Jet Series 700, 701, & 702) Airplanes, Model CL-600-2D15 (Regional Jet
Series 705) Airplanes, and Model CL-600-2D24 (Regional Jet Series 900)
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 that would supersede an existing AD. 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: Following in-flight test
deployments on CL-600-2B19 aircraft, several Air-Driven generators
(ADGs) failed to come on-line. Investigation revealed that, as a result
of a wiring anomaly that had not been detected during ADG manufacture,
a short circuit was possible between certain internal wires and their
metallic over-braided shields, which could result in the ADG not
providing power when deployed.
The unsafe condition is that failure of the ADG could lead to loss
of several functions essential for safe flight. 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 December 21,
2009.

ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments.
Fax: (202) 493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590.
Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-40, 1200 New
Jersey Avenue, SE., Washington, DC, between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
For service information identified in this proposed AD, contact
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec
H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; e-mail
thd.crj@aero.bombardier.com; Internet https://www.bombardier.com. You
may review copies of the referenced service information at the FAA,
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton,
Washington. For information on the availability of this material at the
FAA, call 425-227-1221 or 425-227-1152.

Examining the AD Docket

You may examine the AD docket on the Internet at https://www.regulations.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: Fabio Buttitta, Aerospace Engineer,
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New
York 11590; telephone (516) 228-7303; fax (516) 794-5531.

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-2009-1033;
Directorate Identifier 2009-NM-104-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 have lengthened the 30-day comment period for proposed ADs that
address MCAI originated by aviation authorities of other countries to
provide adequate time for interested parties to submit comments. The
comment period for these proposed ADs is now typically 45 days, which
is consistent with the comment period for domestic transport ADs.
We will post all comments we receive, without change, to https://www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this proposed AD.

Discussion

On March 6, 2009, we issued AD 2009-06-18, Amendment 39-15855 (74
FR 13094, March 26, 2009). That AD required actions intended to address
an unsafe condition on the products listed above.
Since we issued AD 2009-06-18, we have received notice that
additional suspect air-driven generators may have been installed
between the effective date of Canadian Airworthiness Directive CF-2008-
10, and the effective date of the equivalent FAA AD, AD 2009-06-18.
Therefore, we have determined that the actions required by paragraph
(f)(1) of AD 2009-06-18 are also required for Model CL-600-2C10
airplanes having serial numbers 10266 through 10273, and Model CL-600-
2D15 and CL-600-2D24 airplanes having serial numbers 15163 through
15223.

[[Page 57269]]

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 304 products of U.S. registry.
The actions that are required by AD 2009-06-18 and retained in this
proposed AD take about 5 work-hours per product, at an average labor
rate of $80 per work hour. Required parts cost about $0 per product.
Where the service information lists required parts costs that are
covered under warranty, we have assumed that there will be no charge
for these costs. As we do not control warranty coverage for affected
parties, some parties may incur costs higher than estimated here. Based
on these figures, we estimate the cost of the proposed AD on U.S.
operators to be $121,600, or $400 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, Incorporation by
reference, Safety.

The Proposed Amendment

Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

1. The authority citation for part 39 continues to read as follows:

Authority: 49 U.S.C. 106(g), 40113, 44701.

Sec. 39.13 [Amended]

2. The FAA amends Sec. 39.13 by removing Amendment 39-15855 (74 FR
13094, March 26, 2009) and adding the following new AD:

Bombardier, Inc. (Formerly Canadair): Docket No. FAA-2009-1033;
Directorate Identifier 2009-NM-104-AD.

Comments Due Date

(a) We must receive comments by December 21, 2009.

Affected ADs

(b) The proposed AD supersedes AD 2009-06-18, Amendment 39-
15855.

Applicability

(c) This AD applies to Bombardier Model CL-600-2C10 (Regional
Jet Series 700, 701, & 702) airplanes, having serial numbers (SNs)
10004 and subsequent; and Model CL-600-2D15 (Regional Jet Series
705) airplanes and Model CL-600-2D24 (Regional Jet Series 900)
airplanes, having SN 15002 and subsequent; certificated in any
category.

Subject

(d) Air Transport Association (ATA) of America Code 24:
Electrical power.

Reason

(e) The mandatory continuing airworthiness information (MCAI)
states:

Following in-flight test deployments on CL-600-2B19 aircraft,
several Air-Driven generators (ADGs) failed to come on-line.
Investigation revealed that, as a result of a wiring anomaly that
had not been detected during ADG manufacture, a short circuit was
possible between certain internal wires and their metallic over-
braided shields, which could result in the ADG not providing power
when deployed. This directive mandates checking of the ADG and
modification of the ADG internal wiring, if required. It also
prohibits future installation of unmodified ADGs.

The unsafe condition is that failure of the ADG could lead to loss
of several functions essential for safe flight.

Restatement of Requirements of AD 2009-06-18

(f) Unless already done, do the following actions.
(1) For airplanes identified in Table 1 of this AD: Within 12
months after April 30, 2009 (the effective date of AD 2009-06-18),
inspect the serial number of the installed ADG. A review of airplane
maintenance records is acceptable in lieu of this inspection if the
serial number of the ADG can be conclusively determined from that
review.

[[Page 57270]]

Table 1--Bombardier Airplane Identification
------------------------------------------------------------------------
Model Serial Nos.
------------------------------------------------------------------------
CL-600-2C10 airplanes............ 10004 through 10265.
CL-600-2D15 and CL-600-2D24 15002 through 15162.
airplanes.
------------------------------------------------------------------------

(i) If the serial number is not listed in paragraph 1.A of
Bombardier Service Bulletin 670BA-24-015, Revision A, dated December
18, 2006, no further action is required by this AD.
(ii) If the serial number is listed in paragraph 1.A of
Bombardier Service Bulletin 670BA-24-015, Revision A, dated December
18, 2006 (``the service bulletin''), within 12 months after April
30, 2009, inspect the ADG identification plate and, as applicable,
do the actions of paragraph (f)(1)(ii)(A) or (f)(1)(ii)(B) of this
AD.
(A) If the identification plate is marked with the symbol ``24-
2,'' no further action is required by this AD.
(B) If the identification plate is not marked with the symbol
``24-2,'' modify the ADG wiring in accordance with the
Accomplishment Instructions of the service bulletin.
(2) For all Model CL-600-2C10 airplanes having SN 10004 and
subsequent, and Model CL-600-2D15 and CL-600-2D24 airplanes having
SN 15002 and subsequent: As of April 30, 2009, no ADG part number
604-90800-19 (761339E), having SN 0101 through 0132, 0134 through
0167, 0169 through 0358, 0360 through 0438, 0440 through 0456, 0458
through 0467, 0469, 0471 through 0590, 0592 through 0597, 0599
through 0745, 0747 through 1005, or 1400 through 1439, may be
installed on any airplane, unless the identification plate of the
ADG is identified with the symbol ``24-2.''

Note 1: Bombardier Service Bulletin 670BA-24-015, Revision A,
dated December 18, 2006, refers to Hamilton Sundstrand Service
Bulletin ERPS10AG-24-2, dated February 19, 2004, for further
information on identifying the symbol ``24-2.''

(3) Actions done before April 30, 2009, according to Bombardier
Service Bulletin 670BA-24-015, dated May 17, 2004, are considered
acceptable for compliance with the corresponding actions specified
in paragraph (f)(1) of this AD, provided the ADG has not been
replaced since those actions were done.

New Requirements of This AD: Actions and Compliance

(g) Unless already done, do the following actions.
(1) For airplanes identified in Table 2 of this AD: Within 12
months after the effective date of this AD, inspect the serial
number of the installed ADG. A review of airplane maintenance
records is acceptable in lieu of this inspection if the serial
number of the ADG can be conclusively determined from that review.

Table 2--Additional Bombardier Airplane Identification
------------------------------------------------------------------------
Model Serial Nos.
------------------------------------------------------------------------
CL-600-2C10 airplanes............ 10266 through 10273.
CL-600-2D15 and CL-600-2D24 15163 through 15223.
airplanes.
------------------------------------------------------------------------

(i) If the serial number is not listed in paragraph 1.A of
Bombardier Service Bulletin 670BA-24-015, Revision A, dated December
18, 2006, no further action is required by this AD.
(ii) If the serial number is listed in paragraph 1.A of
Bombardier Service Bulletin 670BA-24-015, Revision A, dated December
18, 2006 (``the service bulletin''), within 12 months after the
effective date of this AD, inspect the ADG identification plate and,
as applicable, do the actions of paragraph (g)(1)(ii)(A) or
(g)(1)(ii)(B) of this AD.
(A) If the identification plate is marked with the symbol ``24-
2'', no further action is required by this AD.
(B) If the identification plate is not marked with the symbol
``24-2'', modify the ADG wiring in accordance with the
Accomplishment Instructions of the service bulletin.
(2) Actions done before the effective date of this AD according
to Bombardier Service Bulletin 670BA-24-015, dated May 17, 2004, are
considered acceptable for compliance with the corresponding actions
specified in paragraph (g)(1) of this AD, provided the ADG has not
been replaced since those actions were done.

FAA AD Differences

Note 2: This AD differs from the MCAI and/or service
information as follows: The MCAI specifies to inspect Model CL-600-
2C10 airplanes having SNs 10004 through 10265 and Model CL-600-2D15
and CL-600-2D24 airplanes having SNs 15002 through 15162. This AD
also specifies to inspect Model CL-600-2C10 airplanes having serial
numbers 10266 through 10273, and Model CL-600-2D15 and CL-600-2D24
airplanes having serial numbers 15163 through 15223.

Other FAA AD Provisions

(h) The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, New
York Aircraft Certification 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: Fabio Buttitta, Aerospace
Engineer, Airframe and Mechanical Systems Branch, ANE-171, FAA, New
York Aircraft Certification Office, 1600 Stewart Avenue, Suite 410,
Westbury, New York 11590; telephone (516) 228-7303; fax (516) 794-
5531. Before using any approved AMOC on any airplane to which the
AMOC applies, notify your principal maintenance inspector (PMI) or
principal avionics inspector (PAI), as appropriate, or lacking a
principal inspector, your local Flight Standards District Office.
The AMOC approval letter must specifically reference this AD.
(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

(i) Refer to MCAI Canadian Airworthiness Directive CF-2008-10,
dated February 5, 2008; and Bombardier Service Bulletin 670BA-24-
015, Revision A, dated December 18, 2006; for related information.

Issued in Renton, Washington, on October 29, 2009.
Stephen P. Boyd,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E9-26684 Filed 11-4-09; 8:45 am]
BILLING CODE 4910-13-P

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