Airworthiness Directives; B-N Group Ltd. BN-2, BN-2A, BN-2B, BN-2T, and BN-2T-4R Series (All Individual Models Included in Type A17EU Certificate Data Sheet (TCDS) A17E, Revision 16, Dated December 9, 2002) Airplanes, 54438-54441 [06-7706]

Download as PDF 54438 Proposed Rules Federal Register Vol. 71, No. 179 Friday, September 15, 2006 This section of the FEDERAL REGISTER contains notices to the public of the proposed issuance of rules and regulations. The purpose of these notices is to give interested persons an opportunity to participate in the rule making prior to the adoption of the final rules. DEPARTMENT OF AGRICULTURE Animal and Plant Health Inspection Service 9 CFR Part 3 [Docket No. APHIS–2006–0044] Animal Welfare; Elephants Animal and Plant Health Inspection Service, USDA. ACTION: Notice of petition and request for comments; extension of comment period. ycherry on PROD1PC64 with PROPOSALS AGENCY: 14:48 Sep 14, 2006 Jkt 208001 Dr. Barbara Kohn, Senior Staff Veterinarian, Animal Care, APHIS, 4700 River Road Unit 84, Riverdale, MD 20737–1234; (301) 734–7833. FOR FURTHER INFORMATION CONTACT: SUMMARY: We are extending the comment period for our notice of petition and request for comments concerning the handling, care, treatment, and transport of elephants covered by the Animal Welfare Act. This action will allow interested persons additional time to prepare and submit comments. DATES: We will consider all comments that we receive on or before November 9, 2006. ADDRESSES: You may submit comments by either of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov, select ‘‘Animal and Plant Health Inspection Service’’ from the agency drop-down menu, then click ‘‘Submit.’’ In the Docket ID column, select APHIS–2006– 0044 to submit or view public comments and to view supporting and related materials available electronically. Information on using Regulations.gov, including instructions for accessing documents, submitting comments, and viewing the docket after the close of the comment period, is available through the site’s ‘‘User Tips’’ link. • Postal Mail/Commercial Delivery: Please send four copies of your comment (an original and three copies) to Docket No. APHIS–2006–0044, Regulatory Analysis and Development, PPD, APHIS, Station 3A–03.8, 4700 River Road Unit 118, Riverdale, MD 20737–1238. Please state that your VerDate Aug<31>2005 comment refers to Docket No. APHIS– 2006–0044. Reading Room: You may read any comments that we receive on Docket No. APHIS–2006–0044 in our reading room. The reading room is located in room 1141 of the USDA South Building, 14th Street and Independence Avenue, SW., Washington, DC. Normal reading room hours are 8 a.m. to 4:30 p.m., Monday through Friday, except holidays. To be sure someone is there to help you, please call (202) 690–2817 before coming. Other Information: Additional information about APHIS and its programs is available on the Internet at https://www.aphis.usda.gov. On August 9, 2006, we published in the Federal Register (71 FR 45438–45439, Docket No. APHIS–2006–0044) a notice of petition and request for comments. That document notified the public that the Animal and Plant Health Inspection Service had received a petition from In Defense of Animals requesting that we issue an interpretive rule or policy to clarify the space and living conditions required for captive elephants, and that we enforce the Animal Welfare Act and its implementing regulations by requiring that exhibitors fully comply with the regulations. We solicited comments from the public regarding the petition, and whether we should continue to regulate the handling, care, treatment, and transport of elephants covered by the Animal Welfare Act under the general standards in the regulations or promulgate specific standards for elephants. We also requested comments regarding what should be included in such standards. Comments on the notice were required to be received on or before October 10, 2006. We are extending the comment period on Docket No. APHIS– 2006–0044 for an additional 30 days. This action will allow interested persons additional time to prepare and submit comments. SUPPLEMENTARY INFORMATION: Authority: 7 U.S.C. 2131–2159; 7 CFR 2.22, 2.80, and 371.7. PO 00000 Frm 00001 Fmt 4702 Sfmt 4702 Done in Washington, DC, this 12th day of September 2006. Nick Gutierrez, Acting Administrator, Animal and Plant Health Inspection Service. [FR Doc. E6–15328 Filed 9–14–06; 8:45 am] BILLING CODE 3410–34–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2006–25688; Directorate Identifier 2006–CE–44–AD] RIN 2120–AA64 Airworthiness Directives; B–N Group Ltd. BN–2, BN–2A, BN–2B, BN–2T, and BN–2T–4R Series (All Individual Models Included in Type A17EU Certificate Data Sheet (TCDS) A17E, Revision 16, Dated December 9, 2002) Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Notice of proposed rulemaking (NPRM). AGENCY: SUMMARY: We propose to adopt a new airworthiness directive (AD) for all B–N Group Ltd. BN–2, BN–2A, BN–2B, BN– 2T, and BN–2T–4R series (all individual models included in Type Certificate Data Sheet (TCDS) A17EU, Revision 16, dated December 9, 2002) airplanes. This proposed AD would require you to inspect the horizontal stabilizer attachment bolts and anchor nuts for damage and wear and replace damaged and/or worn parts with new, modified parts. If no damaged or worn parts are found during the proposed inspection, this proposed AD would require you to replace the horizontal stabilizer attachment bolts and anchor nuts at a specified time with new, modified parts. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the United Kingdom. We are proposing this AD to detect and correct damaged and/or worn horizontal stabilizer attachment bolts and anchor nuts, which would result in failure of the horizontal stabilizer. This failure could result in loss of control. DATES: We must receive comments on this proposed AD by October 16, 2006. E:\FR\FM\15SEP1.SGM 15SEP1 Federal Register / Vol. 71, No. 179 / Friday, September 15, 2006 / Proposed Rules Use of the following addresses to comment on this proposed AD: • DOT Docket Web site: Go to https://dms.dot.gov and follow the instructions for sending your comments electronically. • Government-wide rulemaking Web site: Go to https://www.regulations.gov. and follow the instructions for sending your comments electronically. • Mail: Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL–401, Washington, DC 20590– 0001. • Fax: (202) 493–2251. • Hand Delivery: Room PL–401 on the plaza level of the Nassif Building, 400 Seventh Street, SW., 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 B–N Group Ltd., Bembridge Airport, Isle of Wight, PO35 5PR, United Kingdom; telephone: +44 (0) 1983 872511; fax: +44 (0) 1983 873246. FOR FURTHER INFORMATION CONTACT: Albert J. Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri, 64106; telephone: (816) 329– 4119; facsimile: (816) 329–4090. SUPPLEMENTARY INFORMATION: ADDRESSES: ycherry on PROD1PC64 with PROPOSALS Comments Invited We invite you to send any written relevant data, views, or arguments regarding this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include the docket number, ‘‘FAA–2006–25688; Directorate Identifier 2006–CE–44–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of the proposed AD. We will consider all comments received by the closing dat and may amend the proposed AD in light of 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 concerning this proposed AD. Discussion The Civil Aviation Authority (CAA), which is the airworthiness authority for the United Kingdom, notified the FAA that an unsafe condition may exist on all B–N Group Ltd. BN–2, BN–2A, BN– 2B, BN–2T, and BN–2T–4R series (all individual models included in Type Certificate Data Sheet (TCDS ) A17EU, Revision 16, dated December 9, 2002) airplanes. The CAA has received reports of loose horizontal stabilizer attachment bolts. This condition, if not corrected, could cause the horizontal stabilizer to fail. This failure could result in loss of control. Relevant Service Information We have reviewed B–N BrittenNorman Aircraft Limited Service Bulletin number SB 302, Issue 2, dated April 12, 2005. The service information describes procedures for: • Inspecting the horizontal stabilizer attachment bolts and anchor nuts or damage and wear; and • Replacing the horizontal stabilizer attachment bolts and anchor nuts with new, modified parts. Foreign Airworthiness Authority Information The CAA classified this service bulletin as mandatory and issued British AD No. G–2004–0014 R1, Effective Date: July 29, 2005, to ensure the continued airworthiness of these airplanes in the United Kingdom. The B–N Group Ltd. BN–2, BN–2A, BN–2B, BN–2T, and BN–2T–4R series airplanes are manufactured in the United Kingdom and are typecertificated for operation in the United States under the provisions of section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and the applicable bilateral airworthiness agreement. Under this bilateral airworthiness agreement, the CAA has kept us informed of the situation described above. FAA’s Determination and Requirements of the Proposed AD We are proposing this AD because we have examined the CAA’s findings, evaluated all information and determined the unsafe condition described previously is likely to exist or develop on other products of the same type design that are certificated for operation in the United States. This proposed AD would require you to inspect the horizontal stabilizer attachment bolts and anchor nuts for damage and wear and replace damaged and/or worn parts with new, modified parts. If no damaged or worn parts are found during the proposed inspection, this proposed AD would require you to replace the horizontal stabilizer attachment bolts and anchor nuts at a specified time with new, modified parts. Differences Between the Foreign Airworthiness Authority AD, the Service Bulletin, and the Proposed AD The MCAI British AD No. G–2004– 0014 R1, Effective Date: July 29, 2005, and B–N Britten-Norman Aircraft Limited Service Bulletin number SB 302, Issue 2, dated April 12, 2005, allows 1,000-hour repetitive inspections of the horizontal stabilizer attachment bolts and anchor nuts with the option of installing the new, modified horizontal stabilizer attachment bolts as a terminating action for the repetitive inspections. This AD does not allow continued repetitive inspections. The actions required by this AD are consistent with the FAA’s aging commuter aircraft policy, which briefly states that, when a modification exists that could eliminate or reduce then umber of required critical inspections, the modification should be incorporated. This policy is based on the FAA’s determination that reliance on critical repetitive inspections on airplanes utilized in commuter service carries an unnecessary safety risk when a design change exists that could eliminate or, in certain instances, reduce the number of those critical inspections. In determining what inspections are critical, the FAA considers (1) the safety consequences of the airplane if the known problem is not detected by the inspection; (2) the reliability of the inspection such as the probability of not detecting the known problem; (3) whether the inspection area is difficult to access; and (4) the possibility of damage to an adjacent structure as a result of the problem. Costs of Compliance We estimate that this proposed AD would affect 91 airplanes in the U.S. registry. We estimate the following costs to do the proposed inspection: Total cost per airplane Labor cost Parts cost 1 work-hour × $80 per hour = $80 ................. Not applicable ................................................. VerDate Aug<31>2005 14:48 Sep 14, 2006 Jkt 208001 PO 00000 Frm 00002 Fmt 4702 Sfmt 4702 54439 E:\FR\FM\15SEP1.SGM $80 15SEP1 Total cost on U.S. operators $80 × 91 = $7,280. 54440 Federal Register / Vol. 71, No. 179 / Friday, September 15, 2006 / Proposed Rules We estimate the following costs to do the proposed replacements: Labor cost Total cost per airplane Parts cost 3 work-hours × $80 per hour = $240 ................................................ 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 II, 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 have 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 that the proposed regulation: 1. Is not a ‘‘significant regulatory action’’ under Executive Order 12866; $1,600 Total cost on U.S. operators $240 + $1,600 = $1,840 .... $1,840 × 91 = $167,440. 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. PART 39—AIRWORTHINESS DIRECTIVES Examining the AD Docket Comments Due Date (a) We must receive comments on this airworthiness directive (AD) action by October 16, 2006. You may examine the AD docket that contains the proposed AD, the regulatory evaluation, any comments received, and other information on the Internet at https://dms.dot.gov; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Office (telephone (800) 647–5227) is located at the street address stated in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, 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: 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: B–N Group Ltd: Docket No. FAA–2006– 25688; Directorate Identifier 2006–CE– 44–AD. Affected ADs (b) None. Applicability (c) This AD applies to all BN–2, BN–2A, BN–2B, BN–2T, and BN–2T–4R series (all individual models included in Type Certificate Data Sheet (TCDS) A17EU, Revision 16, dated December 9, 2002) airplanes; that are certificated in any category. Unsafe Condition (d) This AD results from mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the United Kingdom. We are issuing this AD to detect and correct damaged and/or worn horizontal stabilizer attachment bolts and anchor nuts, which could result in failure of the horizontal stabilizer. This failure could result in loss of control. Compliance (e) To address this problem, you must do the following, unless already done: Actions Compliance Procedures (1) Inspect the horizontal stablilzer attachment bolts and anchor nuts for damage and wear. Within the next 50 hours time-in-service (TIS) or 2 months, whichever occurs first, after the effective date of this AD. Before further flight after the inspection required in paragraph (e)(1) of this AD. Follow B–N Britten-Norman Aircraft Limited Service Bulletin number SB 302, Issue 2, dated April 12, 2005. As specified in B–N Britten-Norman Aircraft Limited Service Bulletin number SB 302, Issue 2, dated April 12, 2005. Do any necessary replacements following B–N Group Ltd. Modification Leaflet for Mod NB–M– 1787, Issue 1, dated August 1, 2005. Follow B–N Group Ltd. Modification Leaflet for Mod NB–M–1787, Issue 1, dated August 1, 2005. ycherry on PROD1PC64 with PROPOSALS (2) If you find any damaged or worn horizontal stabilizer attachment bolts and/or anchor nuts during the inspection required in paragraph (e)(1) of this AD, replace with new, modified horizontal stabilizer attachment bolts. (3) If you do not find damaged or worn horizontal stabilizer attachment bolts and/or anchor nuts during the inspection required in paragraph (e)(1) of this AD, replace the horizontal stabilizer attachment bolts and anchor nuts with new, modified horizontal stabilizer attachment bolts. VerDate Aug<31>2005 15:21 Sep 14, 2006 Jkt 208001 Upon accumulating 1,000 hours TIS after the inspection required in paragraph (e)(1) of this AD. PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 E:\FR\FM\15SEP1.SGM 15SEP1 Federal Register / Vol. 71, No. 179 / Friday, September 15, 2006 / Proposed Rules 54441 Actions Compliance Procedures (4) You may replace the horizontal stabilizer attachment bolts and anchor nuts with the new, modified horizontal stabilizer attachment bolts at any time, but no later than the applicable times specified in paragraphs (e)(2) and (e)(3) of this AD. After installing the new, modified horizontal stabilizer attachment bolts, no further action is required. As of the effective date of this AD ................... Follow B–N Group Ltd. Modification Leaflet for Mod NB–M–1787, Issue 1, dated August 1, 2005. Alternative Methods of Compliance (AMOCs) (f) The Manager, Standards Staff, FAA, ATTN: Albert J. Mercado, Aerospace Engineer, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329–4119; facsimile: (816) 329–4090, has the authority to approve AMOCs for this AD, if requested using the procedures found in CFR 39.19. Related Information (g) MCAI British AD No. G–2004–0014 R1, Effective Date: July 29, 2005, also addresses the subject of this AD. To get copies of the service information referenced in this AD, contact B–N Group Ltd., Bembridge Airport, Isle of Wight, PO35 5PR, United Kingdom; telephone: +44 (0) 1983 872511; fax: +44 (0) 1983 873246. To view the AD docket, go to the Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL–401, Washington, DC, or on the Internet at https://dms.dot.gov. The docket number is Docket No. FAA–2006–25688; Directorate Identifier 2006–CE–44–AD. Issued in Kansas City, Missouri, on September 11, 2006. John R. Colomy, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 06–7706 Filed 9–14–06; 8:45 am] BILLING CODE 4910–13–M DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2006–25582; Directorate Identifier 2006–CE–42–AD] RIN 2120–AA64 Airworthiness Directives; Pilatus Aircraft Ltd. Model PC–7 Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Notice of proposed rulemaking (NPRM). ycherry on PROD1PC64 with PROPOSALS AGENCY: We propose to adopt a new airworthiness directive (AD) for certain Pilatus Aircraft Ltd. (Pilatus) Model PC– 7 airplanes. This proposed AD would require you to do repetitive eddySUMMARY: VerDate Aug<31>2005 14:48 Sep 14, 2006 Jkt 208001 current, non-destructive inspections of the nose skin and adjacent structure above the left and right main landing gear bay and repetitive visual inspections of the forward support structure of the floor panel for crack damage. If you find any crack damage, this proposed AD would require you to contact Pilatus to obtain a repair solution and incorporate the repair. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. We are proposing this AD to detect and correct cracks in the nose skin and adjacent structure above the left and right main landing gear bay and in the forward support structure of the floor panel. Crack propagation in certain areas could lead to failure of the main wing torsion box, which could result in loss of control. We must receive comments on this proposed AD by October 16, 2006. ADDRESSES: Use one of the following addresses to comment on this proposed AD: • DOT Docket Web site: Go to https://dms.dot.gov and follow the instructions for sending your comments electronically. • Government-wide rulemaking Web site: Go to https://www.regulations.gov and follow the instructions for sending your comments electronically. • Mail: Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL–401, Washington, DC 20590– 0001. • Fax: (202) 493–2251. • Hand Delivery: Room PL–401 on the plaza level of the Nassif Building, 400 Seventh Street, SW., 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 Pilatus Aircraft Ltd., Customer Liaison Manager, CH–6371 Stans, Switzerland; telephone: +41 41 619 63 19; fax: +41 41 619 6224. FOR FURTHER INFORMATION CONTACT: Doug Rudolph, Aerospace Engineer, FAA, Small Airplane Directorate, 901 DATES: PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329– 4059; facsimile: (816) 329–4090. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments regarding this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include the docket number, ‘‘FAA–2006–25582; Directorate Identifier 2006–CE–42–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of the proposed AD. We will consider all comments received by the closing date and may amend the proposed AD in light of 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 concerning this proposed AD. Discussion The Federal Office for Civil Aviation (FOCA), which is the airworthiness authority for Switzerland, notified FAA that an unsafe condition may exist on certain Pilatus PC–7 airplanes. The FOCA reports crack damage in some radii at the rear edge of the nose skin, part number (P/N) 111.34.07.434. The radii are adjacent to the left and right corners at the forward edge of the floor panel, P/N 111.34.07.530. Crack damage can also occur in the forward support structure of the floor panel adjacent to the skin panel. This condition, if not detected and corrected, could result in crack propagation in certain areas, which may lead to failure of the main wing torsion box. This failure could result in loss of control. Relevant Service Information We have reviewed Pilatus PC–7 Service Bulletin No. 57–009, dated January 29, 2004. The service information describes procedures for visually inspecting the forward support E:\FR\FM\15SEP1.SGM 15SEP1

Agencies

[Federal Register Volume 71, Number 179 (Friday, September 15, 2006)]
[Proposed Rules]
[Pages 54438-54441]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 06-7706]


=======================================================================
-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2006-25688; Directorate Identifier 2006-CE-44-AD]
RIN 2120-AA64


Airworthiness Directives; B-N Group Ltd. BN-2, BN-2A, BN-2B, BN-
2T, and BN-2T-4R Series (All Individual Models Included in Type A17EU 
Certificate Data Sheet (TCDS) A17E, Revision 16, Dated December 9, 
2002) Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to adopt a new airworthiness directive (AD) for all 
B-N Group Ltd. BN-2, BN-2A, BN-2B, BN-2T, and BN-2T-4R series (all 
individual models included in Type Certificate Data Sheet (TCDS) A17EU, 
Revision 16, dated December 9, 2002) airplanes. This proposed AD would 
require you to inspect the horizontal stabilizer attachment bolts and 
anchor nuts for damage and wear and replace damaged and/or worn parts 
with new, modified parts. If no damaged or worn parts are found during 
the proposed inspection, this proposed AD would require you to replace 
the horizontal stabilizer attachment bolts and anchor nuts at a 
specified time with new, modified parts. This proposed AD results from 
mandatory continuing airworthiness information (MCAI) issued by the 
airworthiness authority for the United Kingdom. We are proposing this 
AD to detect and correct damaged and/or worn horizontal stabilizer 
attachment bolts and anchor nuts, which would result in failure of the 
horizontal stabilizer. This failure could result in loss of control.

DATES: We must receive comments on this proposed AD by October 16, 
2006.

[[Page 54439]]


ADDRESSES: Use of the following addresses to comment on this proposed 
AD:
     DOT Docket Web site: Go to https://dms.dot.gov and follow 
the instructions for sending your comments electronically.
     Government-wide rulemaking Web site: Go to https://
www.regulations.gov. and follow the instructions for sending your 
comments electronically.
     Mail: Docket Management Facility; U.S. Department of 
Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, 
Washington, DC 20590-0001.
     Fax: (202) 493-2251.
     Hand Delivery: Room PL-401 on the plaza level of the 
Nassif Building, 400 Seventh Street, SW., 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 B-N 
Group Ltd., Bembridge Airport, Isle of Wight, PO35 5PR, United Kingdom; 
telephone: +44 (0) 1983 872511; fax: +44 (0) 1983 873246.

FOR FURTHER INFORMATION CONTACT: Albert J. Mercado, Aerospace Engineer, 
FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, 
Missouri, 64106; telephone: (816) 329-4119; facsimile: (816) 329-4090.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments regarding this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include the docket number, ``FAA-
2006-25688; Directorate Identifier 2006-CE-44-AD'' at the beginning of 
your comments. We specifically invite comments on the overall 
regulatory, economic, environmental, and energy aspects of the proposed 
AD. We will consider all comments received by the closing dat and may 
amend the proposed AD in light of 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 concerning this proposed AD.

Discussion

    The Civil Aviation Authority (CAA), which is the airworthiness 
authority for the United Kingdom, notified the FAA that an unsafe 
condition may exist on all B-N Group Ltd. BN-2, BN-2A, BN-2B, BN-2T, 
and BN-2T-4R series (all individual models included in Type Certificate 
Data Sheet (TCDS ) A17EU, Revision 16, dated December 9, 2002) 
airplanes. The CAA has received reports of loose horizontal stabilizer 
attachment bolts.
    This condition, if not corrected, could cause the horizontal 
stabilizer to fail. This failure could result in loss of control.

Relevant Service Information

    We have reviewed B-N Britten-Norman Aircraft Limited Service 
Bulletin number SB 302, Issue 2, dated April 12, 2005.
    The service information describes procedures for:
      Inspecting the horizontal stabilizer attachment bolts and 
anchor nuts or damage and wear; and
     Replacing the horizontal stabilizer attachment bolts and 
anchor nuts with new, modified parts.

Foreign Airworthiness Authority Information

    The CAA classified this service bulletin as mandatory and issued 
British AD No. G-2004-0014 R1, Effective Date: July 29, 2005, to ensure 
the continued airworthiness of these airplanes in the United Kingdom.
    The B-N Group Ltd. BN-2, BN-2A, BN-2B, BN-2T, and BN-2T-4R series 
airplanes are manufactured in the United Kingdom and are type-
certificated for operation in the United States under the provisions of 
section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and 
the applicable bilateral airworthiness agreement.
    Under this bilateral airworthiness agreement, the CAA has kept us 
informed of the situation described above.

FAA's Determination and Requirements of the Proposed AD

    We are proposing this AD because we have examined the CAA's 
findings, evaluated all information and determined the unsafe condition 
described previously is likely to exist or develop on other products of 
the same type design that are certificated for operation in the United 
States.
    This proposed AD would require you to inspect the horizontal 
stabilizer attachment bolts and anchor nuts for damage and wear and 
replace damaged and/or worn parts with new, modified parts. If no 
damaged or worn parts are found during the proposed inspection, this 
proposed AD would require you to replace the horizontal stabilizer 
attachment bolts and anchor nuts at a specified time with new, modified 
parts.

 Differences Between the Foreign Airworthiness Authority AD, the 
Service Bulletin, and the Proposed AD

    The MCAI British AD No. G-2004-0014 R1, Effective Date: July 29, 
2005, and B-N Britten-Norman Aircraft Limited Service Bulletin number 
SB 302, Issue 2, dated April 12, 2005, allows 1,000-hour repetitive 
inspections of the horizontal stabilizer attachment bolts and anchor 
nuts with the option of installing the new, modified horizontal 
stabilizer attachment bolts as a terminating action for the repetitive 
inspections. This AD does not allow continued repetitive inspections.
    The actions required by this AD are consistent with the FAA's aging 
commuter aircraft policy, which briefly states that, when a 
modification exists that could eliminate or reduce then umber of 
required critical inspections, the modification should be incorporated. 
This policy is based on the FAA's determination that reliance on 
critical repetitive inspections on airplanes utilized in commuter 
service carries an unnecessary safety risk when a design change exists 
that could eliminate or, in certain instances, reduce the number of 
those critical inspections. In determining what inspections are 
critical, the FAA considers (1) the safety consequences of the airplane 
if the known problem is not detected by the inspection; (2) the 
reliability of the inspection such as the probability of not detecting 
the known problem; (3) whether the inspection area is difficult to 
access; and (4) the possibility of damage to an adjacent structure as a 
result of the problem.

Costs of Compliance

    We estimate that this proposed AD would affect 91 airplanes in the 
U.S. registry.
    We estimate the following costs to do the proposed inspection:

----------------------------------------------------------------------------------------------------------------
                                                          Total cost per
            Labor cost                  Parts cost           airplane           Total cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
1 work-hour x $80 per hour = $80.  Not applicable.....                $80  $80 x 91 = $7,280.
----------------------------------------------------------------------------------------------------------------


[[Page 54440]]

    We estimate the following costs to do the proposed replacements:

--------------------------------------------------------------------------------------------------------------------------------------------------------
                Labor cost                   Parts cost               Total cost per  airplane                      Total cost on U.S. operators
--------------------------------------------------------------------------------------------------------------------------------------------------------
3 work-hours x $80 per hour = $240.......          $1,600  $240 + $1,600 = $1,840........................  $1,840 x 91 = $167,440.
--------------------------------------------------------------------------------------------------------------------------------------------------------

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 II, 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 have 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 that the 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.

Examining the AD Docket

    You may examine the AD docket that contains the proposed AD, the 
regulatory evaluation, any comments received, and other information on 
the Internet at https://dms.dot.gov; or in person at the Docket 
Management Facility between 9 a.m. and 5 p.m., Monday through Friday, 
except Federal holidays. The Docket Office (telephone (800) 647-5227) 
is located at the street address stated in the ADDRESSES section. 
Comments will be available in the AD docket shortly after receipt.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, 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 adding the following new AD:

B-N Group Ltd: Docket No. FAA-2006-25688; Directorate Identifier 
2006-CE-44-AD.

Comments Due Date

    (a) We must receive comments on this airworthiness directive 
(AD) action by October 16, 2006.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to all BN-2, BN-2A, BN-2B, BN-2T, and BN-2T-
4R series (all individual models included in Type Certificate Data 
Sheet (TCDS) A17EU, Revision 16, dated December 9, 2002) airplanes; 
that are certificated in any category.

Unsafe Condition

    (d) This AD results from mandatory continuing airworthiness 
information (MCAI) issued by the airworthiness authority for the 
United Kingdom. We are issuing this AD to detect and correct damaged 
and/or worn horizontal stabilizer attachment bolts and anchor nuts, 
which could result in failure of the horizontal stabilizer. This 
failure could result in loss of control.

Compliance

    (e) To address this problem, you must do the following, unless 
already done:

------------------------------------------------------------------------
           Actions                 Compliance            Procedures
------------------------------------------------------------------------
(1) Inspect the horizontal    Within the next 50    Follow B-N Britten-
 stablilzer attachment bolts   hours time-in-        Norman Aircraft
 and anchor nuts for damage    service (TIS) or 2    Limited Service
 and wear.                     months, whichever     Bulletin number SB
                               occurs first, after   302, Issue 2, dated
                               the effective date    April 12, 2005.
                               of this AD.
(2) If you find any damaged   Before further        As specified in B-N
 or worn horizontal            flight after the      Britten-Norman
 stabilizer attachment bolts   inspection required   Aircraft Limited
 and/or anchor nuts during     in paragraph (e)(1)   Service Bulletin
 the inspection required in    of this AD.           number SB 302,
 paragraph (e)(1) of this                            Issue 2, dated
 AD, replace with new,                               April 12, 2005. Do
 modified horizontal                                 any necessary
 stabilizer attachment bolts.                        replacements
                                                     following B-N Group
                                                     Ltd. Modification
                                                     Leaflet for Mod NB-
                                                     M-1787, Issue 1,
                                                     dated August 1,
                                                     2005.
(3) If you do not find        Upon accumulating     Follow B-N Group
 damaged or worn horizontal    1,000 hours TIS       Ltd. Modification
 stabilizer attachment bolts   after the             Leaflet for Mod NB-
 and/or anchor nuts during     inspection required   M-1787, Issue 1,
 the inspection required in    in paragraph (e)(1)   dated August 1,
 paragraph (e)(1) of this      of this AD.           2005.
 AD, replace the horizontal
 stabilizer attachment bolts
 and anchor nuts with new,
 modified horizontal
 stabilizer attachment bolts.

[[Page 54441]]

 
(4) You may replace the       As of the effective   Follow B-N Group
 horizontal stabilizer         date of this AD.      Ltd. Modification
 attachment bolts and anchor                         Leaflet for Mod NB-
 nuts with the new, modified                         M-1787, Issue 1,
 horizontal stabilizer                               dated August 1,
 attachment bolts at any                             2005.
 time, but no later than the
 applicable times specified
 in paragraphs (e)(2) and
 (e)(3) of this AD. After
 installing the new,
 modified horizontal
 stabilizer attachment
 bolts, no further action is
 required.
------------------------------------------------------------------------

Alternative Methods of Compliance (AMOCs)

    (f) The Manager, Standards Staff, FAA, ATTN: Albert J. Mercado, 
Aerospace Engineer, Small Airplane Directorate, 901 Locust, Room 
301, Kansas City, Missouri 64106; telephone: (816) 329-4119; 
facsimile: (816) 329-4090, has the authority to approve AMOCs for 
this AD, if requested using the procedures found in CFR 39.19.

Related Information

    (g) MCAI British AD No. G-2004-0014 R1, Effective Date: July 29, 
2005, also addresses the subject of this AD. To get copies of the 
service information referenced in this AD, contact B-N Group Ltd., 
Bembridge Airport, Isle of Wight, PO35 5PR, United Kingdom; 
telephone: +44 (0) 1983 872511; fax: +44 (0) 1983 873246. To view 
the AD docket, go to the Docket Management Facility; U.S. Department 
of Transportation, 400 Seventh Street, SW., Nassif Building, Room 
PL-401, Washington, DC, or on the Internet at https://dms.dot.gov. 
The docket number is Docket No. FAA-2006-25688; Directorate 
Identifier 2006-CE-44-AD.

    Issued in Kansas City, Missouri, on September 11, 2006.
John R. Colomy,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 06-7706 Filed 9-14-06; 8:45 am]
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