Airworthiness Directives; Bell Helicopter Textron, Inc. Model 205A, 205A-1, 205B, 212, 412, 412CF, and 412EP Helicopters, 60760-60762 [07-5186]

Download as PDF 60760 Federal Register / Vol. 72, No. 207 / Friday, October 26, 2007 / Rules and Regulations PART 301—DOMESTIC QUARANTINE NOTICES Accordingly, we are adopting as a final rule, without change, the interim rule that amended 7 CFR part 301 and that was published at 72 FR 40061– 40062 on July 23, 2007. I Done in Washington, DC, this 22nd day of October 2007. Kevin Shea, Acting Administrator, Animal and Plant Health Inspection Service. [FR Doc. E7–21119 Filed 10–25–07; 8:45 am] BILLING CODE 3410–34–P NUCLEAR REGULATORY COMMISSION 10 CFR Part 72 RIN 3150–AI21 List of Approved Spent Fuel Storage Casks: TN–68 Revision 1, Confirmation of Effective Date fuel burnup to 60 gigawatts-day/metric ton of uranium, increasing total cask decay heat to 30 kilowatts, increasing maximum average fuel enrichment to 4.7 weight percent uranium-235, and decreasing minimum fuel assembly cooling time to 7 years. Amendment No. 1 will also add up to eight damaged fuel assemblies as authorized contents of the cask and reduce the cask spacing on the storage pad. In the direct final rule, NRC stated that if no significant adverse comments were received, the direct final rule would become final on October 30, 2007. The NRC did not receive any comments on the direct final rule. Therefore, this rule will become effective as scheduled. Dated at Rockville, Maryland, this 22nd day of October, 2007. For the Nuclear Regulatory Commission. Michael T. Lesar, Chief, Rulemaking, Directives and Editing Branch, Division of Administrative Services, Office of Administration. [FR Doc. E7–21143 Filed 10–25–07; 8:45 am] Nuclear Regulatory Commission. ACTION: Direct final rule: confirmation of effective date. BILLING CODE 7590–01–P SUMMARY: The Nuclear Regulatory Commission (NRC) is confirming the effective date of October 30, 2007, for the direct final rule that was published in the Federal Register on August 16, 2007 (72 FR 45880). This direct final rule amended the NRC’s regulations to revise the TN–68 cask system listing to include Amendment No. 1 to Certificate of Compliance (CoC) No. 1027. DATES: Effective Date: The effective date of October 30, 2007, is confirmed for this direct final rule. ADDRESSES: Documents related to this rulemaking, including any comments received, may be examined at the NRC Public Document Room, located at One White Flint North, 11555 Rockville Pike, Rockville, MD 20852. FOR FURTHER INFORMATION CONTACT: Jayne M. McCausland, Office of Federal and State Materials and Environmental Management Programs, U.S. Nuclear Regulatory Commission, Washington, DC 20555, telephone (301) 415–6219, e-mail jmm2@nrc.gov. SUPPLEMENTARY INFORMATION: On August 16, 2007 (72 FR 45880), the NRC published a direct final rule amending its regulations at 10 CFR 72.214 to revise the TN–68 cask system listing within the ‘‘List of Approved Spent Fuel Storage Casks’’ to include Amendment No. 1 to CoC No. 1027. This amendment modifies the CoC by revising several fuel parameters that include increasing Federal Aviation Administration rmajette on PROD1PC63 with RULES AGENCY: VerDate Aug<31>2005 15:06 Oct 25, 2007 Jkt 214001 DEPARTMENT OF TRANSPORTATION 14 CFR Part 39 [Docket No. FAA–2007–27496; Directorate Identifier 2005–SW–37–AD; Amendment 39– 15238; AD 2007–22–02] RIN 2120–AA64 Airworthiness Directives; Bell Helicopter Textron, Inc. Model 205A, 205A–1, 205B, 212, 412, 412CF, and 412EP Helicopters Federal Aviation Administration, DOT. ACTION: Final Rule. AGENCY: SUMMARY: This amendment supersedes an existing airworthiness directive (AD) for the specified Bell Helicopter Textron, Inc. (Bell) Helicopters. That AD currently requires inspecting each affected tail rotor blade (blade) forward tip weight retention block (tip block) and the aft tip closure (tip closure) for adhesive bond voids, and removing any blade with an excessive void from service. That AD also requires modifying certain blades by installing shear pins and tip closure rivets. This amendment contains the same requirements but expands the applicability to include other part and serial-numbered blades. This AD also clarifies the requirement to re-identify the modified blade by adding ‘‘FM’’ after the part number and also requires PO 00000 Frm 00002 Fmt 4700 Sfmt 4700 dynamically balancing the tail rotor. The existing AD was prompted by five occurrences of missing tip blocks or tip closures resulting in minor to substantial damage. This amendment was prompted by the determination that the AD should apply to other affected part and serial-numbered blades. The actions specified by this AD are intended to prevent loss of a tip block or tip closure, loss of a blade and subsequent loss of control of the helicopter. DATES: Effective November 30, 2007. The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of November 30, 2007. ADDRESSES: You may get the service information identified in this AD from Bell Helicopter Textron, Inc., P.O. Box 482, Fort Worth, Texas 76101, telephone (817) 280–3391, fax (817) 280–6466. Examining the Docket: You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Management Facility between 9 a.m. and 5 p.m. Monday through Friday, except Federal holidays. The AD docket contains this AD, the regulatory evaluation, any comments received, and other information. The address for the Docket Office (telephone 800–647–5527) is the Document Management Facility, U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue, SE., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Michael Kohner, Aviation Safety Engineer, FAA, Rotorcraft Directorate, Rotorcraft Certification Office, Fort Worth, Texas 76193–0170, telephone (817) 222–5447, fax (817) 222–5783. SUPPLEMENTARY INFORMATION: A proposal to amend 14 CFR part 39 by superseding AD 2002–09–04, Amendment 30–12737 (67 FR 22349, May 3, 2002), for the specified Bell model helicopters was published in the Federal Register on March 13, 2007 (72 FR 11295). The action proposed: retaining requirements to inspect the tip block and the tip closure for adhesive bonding voids and to remove any blade with an excessive void from service; retaining requirements to modify certain blades by installing shear pins and tip closure rivets in the tip area of the affected blades; expanding the applicability to include more blades and clarifying other requirements. Since issuing AD 2002–09–04, Bell issued further revisions to Alert Service Bullet (ASB) Nos. 205–00–80, 205B–00– E:\FR\FM\26OCR1.SGM 26OCR1 Federal Register / Vol. 72, No. 207 / Friday, October 26, 2007 / Rules and Regulations rmajette on PROD1PC63 with RULES 34, 212–00–111, 412–00–106, and 412CR–00–13, Revision A, dated December 20, 2000. The revisions add blades with a serial number (S/N) prefix of ‘‘A’’ or ‘‘AFS’’ and number of 11530 to 13594, 13603 to 13618, and also change the ‘‘effectivity’’ of the blades. The latest revisions, Revisions D, all dated March 18, 2005, provide an alternative fastener for the blade tip closure rivets installation. The revised ASBs also state that blades with S/N A or AFS–11926, 13351, 13367, 13393, 13400, 13402, 13515, 13540, 13568, 13595 to 13602, 13619, and subsequent will be modified before delivery. The previously described unsafe condition is likely to exist or develop on other helicopters of these same type designs. Therefore, this AD supersedes AD 2002–09–04 to expand the applicability for the blade part and serial number. This AD also clarifies the requirement to re-identify the modified blade by adding ‘‘FM’’ after the part number and also requires dynamically balancing the tail rotor. Because blades, S/N with a prefix of ‘‘A’’ or ‘‘AFS’’ and a number 11926, 13351, 13367, 13393, 13400, 13402, 13515, 13540, 13568, 13595 to 13602, 13619, and subsequent, will be modified before delivery, we are excluding them from the applicability of this AD. Interested persons have been afforded an opportunity to participate in the making of this amendment. No comments were received on the proposal or the FAA’s determination of the cost to the public. The FAA has determined that air safety and the public interest require the adoption of the rule as proposed. The FAA estimates that this AD will affect 281 helicopters of U.S. registry. The required actions will take about 3 work hours per helicopters to inspect certain blades, install the shear pins and tip closure rivets, reidentify the modified blades, and dynamically balance the blade assembly at an average labor rate of $80 per work hour. Required supplies will cost about $35 per helicopter. Based on these figures, we estimate the total cost impact of the AD on U.S. operators to be $77,275. Regulatory Findings We have 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 reason discussed above, I certify that the regulation: VerDate Aug<31>2005 15:06 Oct 25, 2007 Jkt 214001 1. Is not a ‘‘significant regulatory action’’ under Executive Order 12833; 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 an economic evaluation of the estimated costs to comply with this AD. See the AD docket to examine the economic evaluation. 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. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. Adoption of the Amendment Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: I PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: I Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. Section 39.13 is amended by removing Amendment 39–12737 (67 FR 22349, May 3, 2002), and by adding a new airworthiness directive (AD), Amendment 39–15238, to read as follows: I 2007–22–02 Bell Helicopter Textron, Inc.: Amendment 39–15238. Docket No. FAA–2007–27496; Directorate Identifier PO 00000 Frm 00003 Fmt 4700 Sfmt 4700 60761 2005–SW–37–AD. Supersedes AD 2002– 09–04, Amendment 39–12737, Docket No. 2001–SW–37–AD. Applicability Model 205A, 205A–1, 205B, 212, 412, 412CF, and 412EP helicopters with a tail rotor blade (blade), part number 212–010– 750–009 through –129, all serial numbers except serial numbers with a prefix of ‘‘A’’ or ‘‘AFS’’ and the number 11926, 13351, 13367, 13393, 13400, 13402, 13515, 13540, 13568, 13595 through 13602, 13619, and subsequent assigned numbers, installed, certificated in any category. Compliance Within 100 hours time-in-service, unless accomplished previously. To prevent loss of the forward tip weight retention block (tip block) or aft tip closure (tip closure), loss of the blade, and subsequent loss of control of the helicopter, accomplish the following: (a) Inspect the tip block and tip closure for voids. Remove from service any blade with a void in excess of that allowed by the Component Repair and Overhaul Manual limitations. (b) Inspect the tip block attachment countersink screws in four locations to determine if the head of each countersunk screw is flush with the surface of the abrasion strip. The locations of these four screws are depicted on Figure 1 of Bell Helicopter Textron, Inc. Alert Service Bulletins 205–00–80, 205B–00–34, 212–00– 111, 412–00–106, and 412CF–00–13, all Revision D, all dated March 18, 2005 (ASB). If any of these screws are set below the surface of the abrasion strip or are covered with filler material, install shear pins by following the Accomplishment Instructions, Part A, Shear Pin Installation paragraphs, of the ASB appropriate for your model helicopter. (c) Install the aft tip closure rivets, reidentify the modified blade by adding an ‘‘FM,’’ and dynamically balance the tail rotor hum assembly by following the Accomplishment Instructions, Part B, Aft Tip Closure Rivet Installation paragraphs, of the ASB appropriate for your model helicopter. (d) To request a different method of compliance or a different compliance time for this AD, follow the procedures in 14 CFR 39.19. Contact the Manager, Rotorcraft Certification Office, Rotorcraft Directorate, FAA, ATTN: Michael Kohner, Aviation Safety Engineer, Fort Worth, Texas 76193– 0170, telephone (817) 222–5447, fax (817) 222–5783, for information about previously approved alternative methods of compliance. (e) Inspecting certain screws to determine if they are flush with the surface of the abrasion strip, modifying blades by installing shear pins or aft tip closure rivets as necessary, and re-identifying the modified blade shall be done by following Bell Helicopter Textron, Inc. Alert Service Bulletins 205–00–80, 205B–00–34, 212–00– 111, 412–00–106, and 412CF–00–13, all Revision D, all dated March 18, 2005. The Director of the Federal Register approved this incorporation by reference under 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be E:\FR\FM\26OCR1.SGM 26OCR1 60762 Federal Register / Vol. 72, No. 207 / Friday, October 26, 2007 / Rules and Regulations obtained from Bell Helicopter Textron, Inc., P.O. Box 482, Fort Worth, Texas 76101, telephone (817) 280–3391, fax (817) 280– 6466. Copies may be inspected at the FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas 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: http://www.archives.gov/federal_register/ code_of_federal_regulations/ ibr_locations.html. (f) This amendment becomes effective November 30, 2007. Issued in Fort Worth, Texas, on October 10, 2007. Scott A. Horn, Acting Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. 07–5186 Filed 10–25–07; 8:45 am] BILLING CODE 4910–13–M DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2007–28976; Directorate Identifier 2007–NE–28–AD; Amendment 39– 15244; AD 2007–22–08] RIN 2120–AA64 Airworthiness Directives; Rolls-Royce plc (RR) RB211 Trent 768–60, 772–60, 772B–60, and 772C–60 Turbofan Engines Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule; request for comments. AGENCY: SUMMARY: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) provided by the aviation authority for the United Kingdom to identify and correct an unsafe condition on an aviation product. The MCAI states the following: uncontained engine failure and damage to the airplane. DATES: This AD becomes effective November 13, 2007. The Director of the Federal Register approved the incorporation by reference of RR service bulletins (SBs) RB.211– 72–AE753, Revision 1, dated May 24, 2005, and RB.211–72–AF197, dated December 20, 2006, listed in the AD as of November 13, 2007. ADDRESSES: You may send comments by any of the following methods: • Government-wide rulemaking Web site: Go to http://www.regulations.gov and follow the instructions for sending your comments electronically. • Mail: Docket Management Facility, U.S. Department of Transportation, West Building Ground Floor, Room W12–140, 1200 New Jersey, Avenue, SE., Washington, DC 20590–0001. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. • Fax: (202) 493–2251. Examining the AD Docket You may examine the AD docket on the Internet at http:// 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 AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone (800) 647–5527) is the same as the Mail address provided in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Christopher Spinney, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 16 New England Executive Park, Burlington, MA 01803; e-mail: christopher.spinney@faa.gov; telephone (781) 238–7175; fax (781) 238–7199. SUPPLEMENTARY INFORMATION: Discussion rmajette on PROD1PC63 with RULES This action is necessary following the discovery of IP Compressor Rotor stage 2–3 interstage spacer cracking on an in-service Trent 700 engine. Stress analysis of the damaged rotor has shown a possible threat to the rotor integrity, the cracking therefore presents a potential unsafe condition. The cause of the cracking is currently under investigation. The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued EASA Airworthiness Directive 2007–0136, dated May 14, 2007, to correct an unsafe condition for the specified products. The EASA AD states: We are issuing this AD to detect cracks in the stage 2–3 interstage spacer of the intermediate pressure (IP) Compressor Rotor. Cracking of the stage 2–3 interstage spacer could result in an This Airworthiness Directive requires inspections for cracks in the stage 2–3 interstage spacer of the IP Compressor Rotor during shop visit. This action is necessary following the discovery of IP Compressor Rotor stage 2–3 VerDate Aug<31>2005 15:06 Oct 25, 2007 Jkt 214001 PO 00000 Frm 00004 Fmt 4700 Sfmt 4700 interstage spacer cracking on an in-service Trent 700 engine. Stress analysis of the damaged rotor has shown a possible threat to the rotor integrity, the cracking therefore presents a potential unsafe condition. The cause of the cracking is currently under investigation. You may obtain further information by examining the EASA AD in the AD docket. Relevant Service Information Rolls-Royce plc has issued Service Bulletins RB.211–72–AE753, Revision 1, dated May 24, 2005, and RB.211–72– AF197, dated December 20, 2006. The actions described in that service information are intended to correct the unsafe condition identified in the EASA AD. FAA’s Determination and Requirements of this AD This product has been approved by the aviation authority of the United Kingdom, and is approved for operation in the United States. Pursuant to our bilateral agreement with the United Kingdom, they have notified us of the unsafe condition described in the EASA AD and service information referenced above. We are issuing this AD because we evaluated all the information provided by the EASA and determined the unsafe condition exists and is likely to exist or develop on other products of the same type design. We are issuing this AD to detect cracks in the stage 2– 3 interstage spacer of the IP Compressor Rotor. Cracking of the stage 2–3 interstage spacer could result in an uncontained engine failure and damage to the airplane. This AD requires inspecting the stage 2–3 interstage spacer using an eddy current inspection process at every shop visit. You must use the service information described previously to perform the actions required by this AD. FAA’s Determination of the Effective Date Although no airplanes that are registered in the United States use these engines, the possibility exists that the engines could be used on airplanes that are registered in the United States in the future. The unsafe condition described previously is likely to exist or develop on other RR RB211 Trent 768–60, 772– 60, 772B–60, and 772C–60 turbofan engines of the same type design. Therefore, we determined that notice and opportunity for public comment before issuing this AD are unnecessary and that good cause exists for making this amendment effective in fewer than 30 days. E:\FR\FM\26OCR1.SGM 26OCR1

Agencies

[Federal Register Volume 72, Number 207 (Friday, October 26, 2007)]
[Rules and Regulations]
[Pages 60760-60762]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 07-5186]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2007-27496; Directorate Identifier 2005-SW-37-AD; 
Amendment 39-15238; AD 2007-22-02]
RIN 2120-AA64


Airworthiness Directives; Bell Helicopter Textron, Inc. Model 
205A, 205A-1, 205B, 212, 412, 412CF, and 412EP Helicopters

AGENCY:  Federal Aviation Administration, DOT.

ACTION:  Final Rule.

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

SUMMARY:  This amendment supersedes an existing airworthiness directive 
(AD) for the specified Bell Helicopter Textron, Inc. (Bell) 
Helicopters. That AD currently requires inspecting each affected tail 
rotor blade (blade) forward tip weight retention block (tip block) and 
the aft tip closure (tip closure) for adhesive bond voids, and removing 
any blade with an excessive void from service. That AD also requires 
modifying certain blades by installing shear pins and tip closure 
rivets. This amendment contains the same requirements but expands the 
applicability to include other part and serial-numbered blades. This AD 
also clarifies the requirement to re-identify the modified blade by 
adding ``FM'' after the part number and also requires dynamically 
balancing the tail rotor. The existing AD was prompted by five 
occurrences of missing tip blocks or tip closures resulting in minor to 
substantial damage. This amendment was prompted by the determination 
that the AD should apply to other affected part and serial-numbered 
blades. The actions specified by this AD are intended to prevent loss 
of a tip block or tip closure, loss of a blade and subsequent loss of 
control of the helicopter.

DATES:  Effective November 30, 2007.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of November 30, 2007.

ADDRESSES:  You may get the service information identified in this AD 
from Bell Helicopter Textron, Inc., P.O. Box 482, Fort Worth, Texas 
76101, telephone (817) 280-3391, fax (817) 280-6466.
    Examining the Docket: You may examine the AD docket on the Internet 
at http://www.regulations.gov; or in person at the Docket Management 
Facility between 9 a.m. and 5 p.m. Monday through Friday, except 
Federal holidays. The AD docket contains this AD, the regulatory 
evaluation, any comments received, and other information. The address 
for the Docket Office (telephone 800-647-5527) is the Document 
Management Facility, U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue, SE., Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT:  Michael Kohner, Aviation Safety 
Engineer, FAA, Rotorcraft Directorate, Rotorcraft Certification Office, 
Fort Worth, Texas 76193-0170, telephone (817) 222-5447, fax (817) 222-
5783.

SUPPLEMENTARY INFORMATION:  A proposal to amend 14 CFR part 39 by 
superseding AD 2002-09-04, Amendment 30-12737 (67 FR 22349, May 3, 
2002), for the specified Bell model helicopters was published in the 
Federal Register on March 13, 2007 (72 FR 11295). The action proposed: 
retaining requirements to inspect the tip block and the tip closure for 
adhesive bonding voids and to remove any blade with an excessive void 
from service; retaining requirements to modify certain blades by 
installing shear pins and tip closure rivets in the tip area of the 
affected blades; expanding the applicability to include more blades and 
clarifying other requirements.
    Since issuing AD 2002-09-04, Bell issued further revisions to Alert 
Service Bullet (ASB) Nos. 205-00-80, 205B-00-

[[Page 60761]]

34, 212-00-111, 412-00-106, and 412CR-00-13, Revision A, dated December 
20, 2000. The revisions add blades with a serial number (S/N) prefix of 
``A'' or ``AFS'' and number of 11530 to 13594, 13603 to 13618, and also 
change the ``effectivity'' of the blades. The latest revisions, 
Revisions D, all dated March 18, 2005, provide an alternative fastener 
for the blade tip closure rivets installation. The revised ASBs also 
state that blades with S/N A or AFS-11926, 13351, 13367, 13393, 13400, 
13402, 13515, 13540, 13568, 13595 to 13602, 13619, and subsequent will 
be modified before delivery.
    The previously described unsafe condition is likely to exist or 
develop on other helicopters of these same type designs. Therefore, 
this AD supersedes AD 2002-09-04 to expand the applicability for the 
blade part and serial number. This AD also clarifies the requirement to 
re-identify the modified blade by adding ``FM'' after the part number 
and also requires dynamically balancing the tail rotor. Because blades, 
S/N with a prefix of ``A'' or ``AFS'' and a number 11926, 13351, 13367, 
13393, 13400, 13402, 13515, 13540, 13568, 13595 to 13602, 13619, and 
subsequent, will be modified before delivery, we are excluding them 
from the applicability of this AD.
    Interested persons have been afforded an opportunity to participate 
in the making of this amendment. No comments were received on the 
proposal or the FAA's determination of the cost to the public. The FAA 
has determined that air safety and the public interest require the 
adoption of the rule as proposed.
    The FAA estimates that this AD will affect 281 helicopters of U.S. 
registry. The required actions will take about 3 work hours per 
helicopters to inspect certain blades, install the shear pins and tip 
closure rivets, reidentify the modified blades, and dynamically balance 
the blade assembly at an average labor rate of $80 per work hour. 
Required supplies will cost about $35 per helicopter. Based on these 
figures, we estimate the total cost impact of the AD on U.S. operators 
to be $77,275.

Regulatory Findings

    We have 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 reason discussed above, I certify that the regulation:
    1. Is not a ``significant regulatory action'' under Executive Order 
12833;
    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 an economic evaluation of the estimated costs to comply 
with this AD. See the AD docket to examine the economic evaluation.

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.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, pursuant to the authority delegated to me by the 
Administrator, the Federal Aviation Administration amends part 39 of 
the Federal Aviation Regulations (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. Section 39.13 is amended by removing Amendment 39-12737 (67 FR 
22349, May 3, 2002), and by adding a new airworthiness directive (AD), 
Amendment 39-15238, to read as follows:

2007-22-02 Bell Helicopter Textron, Inc.: Amendment 39-15238. Docket 
No. FAA-2007-27496; Directorate Identifier 2005-SW-37-AD. Supersedes 
AD 2002-09-04, Amendment 39-12737, Docket No. 2001-SW-37-AD.

Applicability

    Model 205A, 205A-1, 205B, 212, 412, 412CF, and 412EP helicopters 
with a tail rotor blade (blade), part number 212-010-750-009 through 
-129, all serial numbers except serial numbers with a prefix of 
``A'' or ``AFS'' and the number 11926, 13351, 13367, 13393, 13400, 
13402, 13515, 13540, 13568, 13595 through 13602, 13619, and 
subsequent assigned numbers, installed, certificated in any 
category.

Compliance

    Within 100 hours time-in-service, unless accomplished 
previously.
    To prevent loss of the forward tip weight retention block (tip 
block) or aft tip closure (tip closure), loss of the blade, and 
subsequent loss of control of the helicopter, accomplish the 
following:
    (a) Inspect the tip block and tip closure for voids. Remove from 
service any blade with a void in excess of that allowed by the 
Component Repair and Overhaul Manual limitations.
    (b) Inspect the tip block attachment countersink screws in four 
locations to determine if the head of each countersunk screw is 
flush with the surface of the abrasion strip. The locations of these 
four screws are depicted on Figure 1 of Bell Helicopter Textron, 
Inc. Alert Service Bulletins 205-00-80, 205B-00-34, 212-00-111, 412-
00-106, and 412CF-00-13, all Revision D, all dated March 18, 2005 
(ASB). If any of these screws are set below the surface of the 
abrasion strip or are covered with filler material, install shear 
pins by following the Accomplishment Instructions, Part A, Shear Pin 
Installation paragraphs, of the ASB appropriate for your model 
helicopter.
    (c) Install the aft tip closure rivets, re-identify the modified 
blade by adding an ``FM,'' and dynamically balance the tail rotor 
hum assembly by following the Accomplishment Instructions, Part B, 
Aft Tip Closure Rivet Installation paragraphs, of the ASB 
appropriate for your model helicopter.
    (d) To request a different method of compliance or a different 
compliance time for this AD, follow the procedures in 14 CFR 39.19. 
Contact the Manager, Rotorcraft Certification Office, Rotorcraft 
Directorate, FAA, ATTN: Michael Kohner, Aviation Safety Engineer, 
Fort Worth, Texas 76193-0170, telephone (817) 222-5447, fax (817) 
222-5783, for information about previously approved alternative 
methods of compliance.
    (e) Inspecting certain screws to determine if they are flush 
with the surface of the abrasion strip, modifying blades by 
installing shear pins or aft tip closure rivets as necessary, and 
re-identifying the modified blade shall be done by following Bell 
Helicopter Textron, Inc. Alert Service Bulletins 205-00-80, 205B-00-
34, 212-00-111, 412-00-106, and 412CF-00-13, all Revision D, all 
dated March 18, 2005. The Director of the Federal Register approved 
this incorporation by reference under 5 U.S.C. 552(a) and 1 CFR part 
51. Copies may be

[[Page 60762]]

obtained from Bell Helicopter Textron, Inc., P.O. Box 482, Fort 
Worth, Texas 76101, telephone (817) 280-3391, fax (817) 280-6466. 
Copies may be inspected at the FAA, Office of the Regional Counsel, 
Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas 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: http://www.archives.gov/federal_register/code_
of_federal_regulations/ibr_locations.html.
    (f) This amendment becomes effective November 30, 2007.

    Issued in Fort Worth, Texas, on October 10, 2007.
Scott A. Horn,
Acting Manager, Rotorcraft Directorate, Aircraft Certification Service.
[FR Doc. 07-5186 Filed 10-25-07; 8:45 am]
BILLING CODE 4910-13-M