Airworthiness Directives; Short Brothers Model SD3 Airplanes, 34801-34804 [06-5288]

Download as PDF 34801 Federal Register / Vol. 71, No. 116 / Friday, June 16, 2006 / Rules and Regulations which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. (3) AMOCs approved previously according to AD 98–20–01, are approved as AMOCs for the corresponding provisions of this AD. Related Information (m) Canadian airworthiness directive CF– 1998–14R4, dated June 1, 2004, also addresses the subject of this AD. Material Incorporated by Reference (n) You must use the service information listed in Table 1 of this AD, as applicable, to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, Station Centre-ville, Montreal, Quebec H3C 3G9, Canada, for a copy of this service information. You may review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street, SW., room PL–401, Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741–6030, or go to http:// www.archives.gov/federal_register/ code_of_federal_regulations/ ibr_locations.html. TABLE 1.—MATERIAL INCORPORATED BY REFERENCE Service information Revision level Bombardier Service Bulletin 601R–11–080 .................................................................. Bombardier Service Bulletin 601R–27–111 .................................................................. Bombardier Service Bulletin 601R–27–114, excluding Appendix A ............................. Bombardier Service Bulletin 601R–27–115 .................................................................. Bombardier Service Bulletin 601R–27–116 .................................................................. Bombardier Service Bulletin 601R–34–128 .................................................................. Canadair Temporary Revision RJ/128 to the Canadair Regional Jet Airplane Flight Manual, CSP A–012. A .................................................. Original ........................................ C .................................................. E .................................................. C .................................................. C .................................................. Original ........................................ Issued in Renton, Washington, on June 5, 2006. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 06–5326 Filed 6–15–06; 8:45 am] BILLING CODE 4910–13–U DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2005–23173; Directorate Identifier 2005–NM–190–AD; Amendment 39–14644; AD 2006–12–18] RIN 2120–AA64 Airworthiness Directives; Short Brothers Model SD3 Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. jlentini on PROD1PC65 with RULES AGENCY: SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all Short Brothers Model SD3 airplanes. This AD requires installing additional fuel tank bonding jumpers, performing an in-place resistance check of the float switches, inspecting certain internal components of the fuel tanks, and performing related corrective actions if necessary. This AD also requires revisions to the Airworthiness Limitations section of the Instructions for Continued Airworthiness, and to the airplane flight manual procedures for operation during icing conditions and fuel system failures. This AD results VerDate Aug<31>2005 16:11 Jun 15, 2006 Jkt 208001 from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent ignition sources inside the fuel tanks, which could lead to fire or explosion. DATES: This AD becomes effective July 21, 2006. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the AD as of July 21, 2006. ADDRESSES: You may examine the AD docket on the Internet at http:// dms.dot.gov or in person at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW., Nassif Building, Room PL–401, Washington, DC. Contact Short Brothers, Airworthiness & Engineering Quality, P.O. Box 241, Airport Road, Belfast BT3 9DZ, Northern Ireland, for service information identified in this AD. FOR FURTHER INFORMATION CONTACT: Dan Rodina, Aerospace Engineer, International Branch, ANM–116, Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, Washington 98055–4056; telephone (425) 227–2125; fax (425) 227–1149. SUPPLEMENTARY INFORMATION: Examining the Docket You may examine the airworthiness directive (AD) docket on the Internet at http://dms.dot.gov or in person at the Docket Management Facility office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Management Facility office (telephone (800) 647–5227) is located on the plaza level of the Nassif Building at PO 00000 Frm 00015 Fmt 4700 Sfmt 4700 Date October 11, 2005. March 6, 2000. November 9, 2004. October 7, 2004. August 26, 2004. March 28, 2005. November 28, 2003. the street address stated in the section. ADDRESSES Discussion The FAA issued a supplemental notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include an AD that would apply to all Short Brothers Model SD3 airplanes. That supplemental NPRM was published in the Federal Register on April 12, 2006 (71 FR 18686). That supplemental NPRM proposed to require installing additional fuel tank bonding jumpers, performing an in-place resistance check of the float switches, inspecting certain internal components of the fuel tanks, and performing related corrective actions if necessary. That supplemental NPRM also proposed to require revisions to the Airworthiness Limitations section of the Instructions for Continued Airworthiness, and to the airplane flight manual (AFM) procedures for operation during icing conditions and fuel system failures. Comments We provided the public the opportunity to participate in the development of this AD. We received no comments on the supplemental NPRM or on the determination of the cost to the public. Clarification of Service Information We have revised the reference to the advance amendment bulletin specified in paragraph (f) of this AD. Rather than one bulletin, there are four bulletins, each applicable to a certain model airplane. The information in each E:\FR\FM\16JNR1.SGM 16JNR1 34802 Federal Register / Vol. 71, No. 116 / Friday, June 16, 2006 / Rules and Regulations bulletin revises the applicable AFM for that model airplane. Conclusion We have carefully reviewed the available data and determined that air safety and the public interest require adopting the AD with the change previously discussed. We have determined that this change will neither increase the economic burden on any operator nor increase the scope of the AD. Costs of Compliance This AD affects about 54 airplanes of U.S. registry. The average labor rate is estimated to be $80 per work hour. The required revisions to the AFM and airplane maintenance manual (AMM) will take about 1 work hour per airplane. Based on these figures, the estimated cost of the required revisions for U.S. operators is $4,320, or $80 per airplane. The required resistance check, inspections, and jumper installations, will take about 40 work hours per airplane. Required parts will cost about $10 per airplane. Based on these figures, the estimated cost of these required actions for U.S. operators is $173,340, or $3,210 per airplane. 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 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 reasons discussed above, I certify that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866; (2) Is not a ‘‘significant rule’’ under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. We prepared a regulatory evaluation of the estimated costs to comply with this AD and placed it in the AD docket. See the ADDRESSES section for a location to examine the regulatory evaluation. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: 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. The Federal Aviation Administration (FAA) amends § 39.13 by adding the following new airworthiness directive (AD): I 2006–12–18 Short Brothers PLC: Amendment 39–14644. Docket No. FAA–2005–23173; Directorate Identifier 2005–NM–190–AD. Effective Date (a) This AD becomes effective July 21, 2006. Affected ADs (b) None. Applicability (c) This AD applies to all Shorts Model SD3–60 SHERPA, SD3-SHERPA, SD3–30, and SD3–60 airplanes, certificated in any category. Note 1: This AD requires revisions to certain operator maintenance documents to include new inspections. Compliance with these inspections is required by 14 CFR 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by these inspections, the operator may not be able to accomplish the inspections described in the revisions. In this situation, to comply with 14 CFR 91.403(c), the operator must request approval for an alternative method of compliance according to paragraph (i) of this AD. The request should include a description of changes to the required inspections that will ensure the continued damage tolerance of the affected structure. The FAA has provided guidance for this determination in Advisory Circular (AC) 25–1529. Unsafe Condition (d) This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent ignition sources inside the fuel tanks, which could lead to fire or explosion. Compliance (e) You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Revision of Airplane Flight Manual (AFM) (f) Within 30 days after the effective date of this AD, revise the Limitations and Normal Procedures sections of the AFMs as specified in Table 1 of this AD to include the information in the applicable Shorts advance amendment bulletins as specified in Table 1 of this AD. The advance amendment bulletins address operation during icing conditions and fuel system failures. Thereafter, operate the airplane according to the limitations and procedures in the applicable advance amendment bulletin. Note 2: The requirements of paragraph (f) of this AD may be done by inserting a copy of the applicable advance amendment bulletin into the AFM. When the applicable advance amendment bulletin has been included in general revisions of the AFM, the general revisions may be inserted into the AFM and the advance amendment bulletin may be removed, provided the relevant information in the general revision is identical to that in the advance amendment bulletin. jlentini on PROD1PC65 with RULES TABLE 1.—AFM REVISIONS Airplane model Shorts advance amendment bulletin SD3–30 .............................................................. 1/2004, dated July 13, 2004 ............................ SD3–60 .............................................................. SD3–60 SHERPA .............................................. 1/2004, dated July 13, 2004 ............................ 1/2004, dated July 13, 2004 ............................ VerDate Aug<31>2005 16:11 Jun 15, 2006 Jkt 208001 PO 00000 Frm 00016 Fmt 4700 Sfmt 4700 To AFM SBH.3.2, SBH.3.3, SBH.3.6, SBH.3.8, and SB.3.9. SB.4.3, SB.4.6, and SB.4.8. SB.5.2. E:\FR\FM\16JNR1.SGM 16JNR1 SBH.3.7, 34803 Federal Register / Vol. 71, No. 116 / Friday, June 16, 2006 / Rules and Regulations TABLE 1.—AFM REVISIONS—Continued Airplane model Shorts advance amendment bulletin SD3–SHERPA ................................................... 1/2004, dated July 13, 2004 ............................ SB.6.2. Revision of Airworthiness Limitation (AWL) Section (TR) specified in Table 2 of this AD into the AWL section of the AMMs for the airplane models specified in Table 2. Thereafter, except as provided by paragraph (i) of this AD, no alternative structural inspection intervals may be approved for the longitudinal skin joints in the fuselage pressure shell. Note 3: The requirements of paragraph (g) of this AD may be done by inserting a copy of the applicable TR into the applicable AMM. When the TR has been included in general revisions of the AMM, the general revisions may be inserted in the AMM and the TR may be removed, provided the relevant information in the general revision is identical to that in the TR. (g) Within 180 days after the effective date of this AD: Revise the AWL section of the Instructions for Continued Airworthiness by incorporating airplane maintenance manual (AMM) sections 5–20–01 and 5–20–02 as introduced by the Shorts temporary revisions To AFM TABLE 2.—AMM TEMPORARY REVISIONS Airplane model Temporary revision Dated SD3–30 .......................................... SD3–30 .......................................... SD3–60 .......................................... SD3–60 .......................................... SD3–60 SHERPA .......................... SD3–60 SHERPA .......................... SD3–SHERPA ............................... SD3–SHERPA ............................... TR330–AMM–13 ........................... TR330–AMM–14 ........................... TR360–AMM–33 ........................... TR360–AMM–34 ........................... TRSD360S–AMM–14 ................... TRSD360S–AMM–15 ................... TRSD3S–AMM–15 ....................... TRSD3S–AMM–16 ....................... June 21, 2004 ............................... June 21, 2004 ............................... July 27, 2004 ................................ July 27, 2004 ................................ July 29, 2004 ................................ July 29, 2004 ................................ July 28, 2004 ................................ July 28, 2004 ................................ Resistance Check, Inspection, and Jumper Installation (h) Within 180 days after the effective date of this AD: Perform the insulation resistance check, general visual inspections, and bonding jumper wire installations; in accordance with Shorts Service Bulletin SD330–28–37, SD360–28–23, SD360 SHERPA–28–3, or SD3 SHERPA–28–2; all dated June 2004; as applicable. If any defect or damage is discovered during any inspection or check required by this AD, before further flight, repair the defect or damage using a method approved by either the Manager, International Branch, ANM– 116, Transport Airplane Directorate, FAA; or the Civil Aviation Authority (CAA) (or its delegated agent). Alternative Methods of Compliance (AMOCs) Note 4: For the purposes of this AD, a general visual inspection is: ‘‘A visual examination of an interior or exterior area, installation, or assembly to detect obvious damage, failure, or irregularity. This level of inspection is made from within touching distance unless otherwise specified. A mirror may be necessary to ensure visual access to all surfaces in the inspection area. This level Related Information of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or droplight and may require removal or opening of access panels or doors. Stands, ladders, or platforms may be required to gain proximity to the area being checked.’’ (i)(1) The Manager, International Branch, ANM–116, Transport Airplane Directorate, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (2) Before using any AMOC approved in accordance with § 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. (j) British airworthiness directive G–2004– 0021 R1, dated September 15, 2004, also addresses the subject of this AD. To AMM SD3–30 AMM. SD3–30 AMM. SD3–60 AMM. SD3–60 AMM. SD3–60 SHERPA AMM. SD3–60 SHERPA AMM. SD3 SHERPA AMM. SD3 SHERPA AMM. Material Incorporated by Reference (k) You must use the applicable service information specified in Table 3, Table 4, and Table 5 of this AD to perform the actions that are required by this AD, unless the AD specifies otherwise. (The document number of the advance amendment bulletins is listed only on page 1 of those documents.) The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Short Brothers, Airworthiness & Engineering Quality, P.O. Box 241, Airport Road, Belfast BT3 9DZ, Northern Ireland, for a copy of this service information. You may review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW., Room PL–401, Nassif Building, Washington, DC; on the Internet at http:// dms.dot.gov; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741–6030, or go to http://www.archives.gov/ federal_register/code_of_federal_regulations/ ibr_locations.html. TABLE 3.—SHORTS TEMPORARY REVISIONS INCORPORATED BY REFERENCE To airplane maintenance manual jlentini on PROD1PC65 with RULES Temporary revision Dated TR330–AMM–13 ................................................................... TR330–AMM–14 ................................................................... TR360–AMM–33 ................................................................... TR360–AMM–34 ................................................................... TRSD360S–AMM–14 ........................................................... TRSD360S–AMM–15 ........................................................... TRSD3S–AMM–15 ............................................................... TRSD3S–AMM–16 ............................................................... June 21, 2004 ...................................................................... June 21, 2004 ...................................................................... July 27, 2004 ........................................................................ July 27, 2004 ........................................................................ July 29, 2004 ........................................................................ July 29, 2004 ........................................................................ July 28, 2004 ........................................................................ July 28, 2004 ........................................................................ VerDate Aug<31>2005 16:11 Jun 15, 2006 Jkt 208001 PO 00000 Frm 00017 Fmt 4700 Sfmt 4700 E:\FR\FM\16JNR1.SGM 16JNR1 SD3–30. SD3–30. SD3–60. SD3–60. SD3–60 SHERPA. SD3–60 SHERPA. SD3 SHERPA. SD3 SHERPA. 34804 Federal Register / Vol. 71, No. 116 / Friday, June 16, 2006 / Rules and Regulations TABLE 4.—SHORTS ADVANCE AMENDMENT BULLETINS INCORPORATED BY REFERENCE Advance amendment bulletin 1/2004, 1/2004, 1/2004, 1/2004, dated dated dated dated July July July July 13, 13, 13, 13, 2004 2004 2004 2004 ..................................................................... ..................................................................... ..................................................................... ..................................................................... TABLE 5.—SHORTS SERVICE BULLETINS INCORPORATED BY REFERENCE Service bulletin Dated SD330–28–37 ......................... SD360–28–23 ......................... SD360 SHERPA–28–3 ........... SD3 SHERPA–28–2 ............... June June June June 2004. 2004. 2004. 2004. Issued in Renton, Washington, on June 5, 2006. Kalene C. Yanamura, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 06–5288 Filed 6–15–06; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2005–23334; Directorate Identifier 2005–CE–53–AD; Amendment 39– 14651; AD 2006–12–25] RIN 2120–AA64 Airworthiness Directives; General Machine—Diecron, Inc. Actuator Nut Assembly for the Right Main Landing Gear Installed on Certain Raytheon Aircraft Company (Formerly Beech) Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Final rule. jlentini on PROD1PC65 with RULES AGENCY: SUMMARY: The FAA adopts a new airworthiness directive (AD) for General Machine—Diecron, Inc. (GMD) actuator nut assembly, part number (P/N) GMD115–810029–17 and P/N GMD115– 810029–23, that are installed on certain Raytheon Aircraft Company (Raytheon) (formerly Beech) airplanes that are not equipped with a hydraulic main landing gear (MLG) or modified to a hydraulic MLG. This AD requires you to determine by maintenance records check and/or inspection whether any actuator nut assembly, P/N GMD115– 810029–17 or P/N GMD115–810029–23, is installed on the right main MLG actuator, and, if installed, requires you to replace it with a new actuator nut assembly, P/N GMD115–810029–23B or VerDate Aug<31>2005 To airplane flight manual 16:11 Jun 15, 2006 Jkt 208001 SBH.3.2, SBH.3.3, SBH.3.6, SBH.3.7, SBH.3.8, and SB.3.9. SB.4.3, SB.4.6, and SB.4.8. SB.5.2. SB.6.2. FAA-approved equivalent P/N. This AD results from several reports of failures of the actuator nut assembly, P/N GMD115–810029–17 and P/N GMD115– 810029–23. We are issuing this AD to prevent failure of the actuator nut assembly for the right MLG actuator, which could result in failure of the MLG. This failure could prevent the extension or retraction of the MLG. DATES: This AD becomes effective on July 28, 2006. As of July 28, 2006, the Director of the Federal Register approved the incorporation by reference of certain publications listed in the regulation. ADDRESSES: To get the service information identified in this AD, contact General Machine—Diecron, Inc., 3131 U.S. Highway 41, Griffin, Georgia 30224, telephone: (770) 228–6200; facsimile: (770) 228–6299. 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 20590– 001 or on the Internet at http:// dms.dot.gov. The docket number is FAA–2005–23334; Directorate Identifier 2005–CE–53–AD. FOR FURTHER INFORMATION CONTACT: Don Buckley, Aerospace Engineer, Airframe and Propulsion Branch, ACE–117A, FAA, Atlanta Aircraft Certification Office, One Crown Center, 1895 Phoenix Boulevard, Suite 450, Atlanta, Georgia 30337–2748, telephone: (770) 703–6086; facsimile: (770) 703–6097. SUPPLEMENTARY INFORMATION: Discussion On January 30, 2006, we issued a proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) to include an AD that would apply to the GMD actuator nut assembly, P/N GMD115–810029–17 or P/N GMD115– 810029–23, that is installed on certain airplanes. This proposal was published in the Federal Register as a notice of proposed rulemaking (NPRM) on February 3, 2006 (71 FR 5796). The NPRM proposed to require you to determine by maintenance records check and/or inspection whether any actuator nut assembly, P/N GMD115– 810029–17 or P/N GMD115–810029–23, is installed on the right MLG actuator, PO 00000 Frm 00018 Fmt 4700 Sfmt 4700 and, if installed, would require you to replace it with a new actuator nut assembly, P/N GMD115–810029–23B or FAA-approved equivalent P/N. Comments We provided the public the opportunity to participate in developing this AD. The following presents the comments received on the proposal and FAA’s response to each comment: Comment Issue No. 1: Include the Raytheon (Military) Models A200 (C– 12A) and A200 (C–12C) Airplanes in the List of ‘‘Airplanes Affected’’ One commenter writes that the applicability of the proposed AD needs to be expanded. The commenter explains that the Raytheon military Models A200 (C–12A) and A200 (C– 12C) airplanes with standard landing gear have the same actuator assemblies as the airplanes listed in the NPRM, and could have the affected P/N nut installed. We disagree with the commenter that the applicability of the proposed AD needs to be expanded. Although a limited number of the affected actuator assemblies were installed on Models A200 (C–12A) and A200 (C–12C) airplanes, the military operates these airplanes and removed the affected parts from service before the issuance of the NPRM. Paragraph (e)(4) of this AD prohibits the subject actuator nut assembly from being installed on these airplanes in the future. The AD specifies that it applies to the subject actuator nut assembly ‘‘installed on, but not limited to’’ specific models listed. We are not changing the final rule AD based on this comment. Comment Issue No. 2: Clarify Applicability of AD by Identifying Raytheon as the Manufacturer of the Affected Airplane Models Two commenters recommend that it should be stated at the beginning of the document that these defective parts are installed on Raytheon airplanes. The commenter explains that stating this early in the AD action would be better form and result in a more easily comprehended document. The FAA agrees with the commenters. We will change the final rule to clearly identify that the affected actuator E:\FR\FM\16JNR1.SGM 16JNR1

Agencies

[Federal Register Volume 71, Number 116 (Friday, June 16, 2006)]
[Rules and Regulations]
[Pages 34801-34804]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 06-5288]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2005-23173; Directorate Identifier 2005-NM-190-AD; 
Amendment 39-14644; AD 2006-12-18]
RIN 2120-AA64


Airworthiness Directives; Short Brothers Model SD3 Airplanes

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

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all 
Short Brothers Model SD3 airplanes. This AD requires installing 
additional fuel tank bonding jumpers, performing an in-place resistance 
check of the float switches, inspecting certain internal components of 
the fuel tanks, and performing related corrective actions if necessary. 
This AD also requires revisions to the Airworthiness Limitations 
section of the Instructions for Continued Airworthiness, and to the 
airplane flight manual procedures for operation during icing conditions 
and fuel system failures. This AD results from fuel system reviews 
conducted by the manufacturer. We are issuing this AD to prevent 
ignition sources inside the fuel tanks, which could lead to fire or 
explosion.

DATES: This AD becomes effective July 21, 2006.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of July 21, 2006.

ADDRESSES: You may examine the AD docket on the Internet at http://
dms.dot.gov or in person at the Docket Management Facility, U.S. 
Department of Transportation, 400 Seventh Street SW., Nassif Building, 
Room PL-401, Washington, DC.
    Contact Short Brothers, Airworthiness & Engineering Quality, P.O. 
Box 241, Airport Road, Belfast BT3 9DZ, Northern Ireland, for service 
information identified in this AD.

FOR FURTHER INFORMATION CONTACT: Dan Rodina, Aerospace Engineer, 
International Branch, ANM-116, Transport Airplane Directorate, FAA, 
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425) 
227-2125; fax (425) 227-1149.

SUPPLEMENTARY INFORMATION:

Examining the Docket

    You may examine the airworthiness directive (AD) docket on the 
Internet at http://dms.dot.gov or in person at the Docket Management 
Facility office between 9 a.m. and 5 p.m., Monday through Friday, 
except Federal holidays. The Docket Management Facility office 
(telephone (800) 647-5227) is located on the plaza level of the Nassif 
Building at the street address stated in the ADDRESSES section.

Discussion

    The FAA issued a supplemental notice of proposed rulemaking (NPRM) 
to amend 14 CFR part 39 to include an AD that would apply to all Short 
Brothers Model SD3 airplanes. That supplemental NPRM was published in 
the Federal Register on April 12, 2006 (71 FR 18686). That supplemental 
NPRM proposed to require installing additional fuel tank bonding 
jumpers, performing an in-place resistance check of the float switches, 
inspecting certain internal components of the fuel tanks, and 
performing related corrective actions if necessary. That supplemental 
NPRM also proposed to require revisions to the Airworthiness 
Limitations section of the Instructions for Continued Airworthiness, 
and to the airplane flight manual (AFM) procedures for operation during 
icing conditions and fuel system failures.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We received no comments on the supplemental 
NPRM or on the determination of the cost to the public.

Clarification of Service Information

    We have revised the reference to the advance amendment bulletin 
specified in paragraph (f) of this AD. Rather than one bulletin, there 
are four bulletins, each applicable to a certain model airplane. The 
information in each

[[Page 34802]]

bulletin revises the applicable AFM for that model airplane.

Conclusion

    We have carefully reviewed the available data and determined that 
air safety and the public interest require adopting the AD with the 
change previously discussed. We have determined that this change will 
neither increase the economic burden on any operator nor increase the 
scope of the AD.

Costs of Compliance

    This AD affects about 54 airplanes of U.S. registry. The average 
labor rate is estimated to be $80 per work hour.
    The required revisions to the AFM and airplane maintenance manual 
(AMM) will take about 1 work hour per airplane. Based on these figures, 
the estimated cost of the required revisions for U.S. operators is 
$4,320, or $80 per airplane.
    The required resistance check, inspections, and jumper 
installations, will take about 40 work hours per airplane. Required 
parts will cost about $10 per airplane. Based on these figures, the 
estimated cost of these required actions for U.S. operators is 
$173,340, or $3,210 per airplane.

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 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 reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866;
    (2) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979); and
    (3) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this AD and placed it in the AD docket. See the ADDRESSES 
section for a location to examine the regulatory evaluation.

List of Subjects in 14 CFR Part 39

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

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator, 
the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

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

Sec.  39.13  [Amended]

0
2. The Federal Aviation Administration (FAA) amends Sec.  39.13 by 
adding the following new airworthiness directive (AD):

2006-12-18 Short Brothers PLC: Amendment 39-14644. Docket No. FAA-
2005-23173; Directorate Identifier 2005-NM-190-AD.

Effective Date

    (a) This AD becomes effective July 21, 2006.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to all Shorts Model SD3-60 SHERPA, SD3-
SHERPA, SD3-30, and SD3-60 airplanes, certificated in any category.

    Note 1: This AD requires revisions to certain operator 
maintenance documents to include new inspections. Compliance with 
these inspections is required by 14 CFR 91.403(c). For airplanes 
that have been previously modified, altered, or repaired in the 
areas addressed by these inspections, the operator may not be able 
to accomplish the inspections described in the revisions. In this 
situation, to comply with 14 CFR 91.403(c), the operator must 
request approval for an alternative method of compliance according 
to paragraph (i) of this AD. The request should include a 
description of changes to the required inspections that will ensure 
the continued damage tolerance of the affected structure. The FAA 
has provided guidance for this determination in Advisory Circular 
(AC) 25-1529.

Unsafe Condition

    (d) This AD results from fuel system reviews conducted by the 
manufacturer. We are issuing this AD to prevent ignition sources 
inside the fuel tanks, which could lead to fire or explosion.

Compliance

    (e) You are responsible for having the actions required by this 
AD performed within the compliance times specified, unless the 
actions have already been done.

Revision of Airplane Flight Manual (AFM)

    (f) Within 30 days after the effective date of this AD, revise 
the Limitations and Normal Procedures sections of the AFMs as 
specified in Table 1 of this AD to include the information in the 
applicable Shorts advance amendment bulletins as specified in Table 
1 of this AD. The advance amendment bulletins address operation 
during icing conditions and fuel system failures. Thereafter, 
operate the airplane according to the limitations and procedures in 
the applicable advance amendment bulletin.


    Note 2: The requirements of paragraph (f) of this AD may be done 
by inserting a copy of the applicable advance amendment bulletin 
into the AFM. When the applicable advance amendment bulletin has 
been included in general revisions of the AFM, the general revisions 
may be inserted into the AFM and the advance amendment bulletin may 
be removed, provided the relevant information in the general 
revision is identical to that in the advance amendment bulletin.


                         Table 1.--AFM Revisions
------------------------------------------------------------------------
                                    Shorts advance
         Airplane model           amendment bulletin        To AFM
------------------------------------------------------------------------
SD3-30..........................  1/2004, dated July  SBH.3.2, SBH.3.3,
                                   13, 2004.           SBH.3.6, SBH.3.7,
                                                       SBH.3.8, and
                                                       SB.3.9.
SD3-60..........................  1/2004, dated July  SB.4.3, SB.4.6,
                                   13, 2004.           and SB.4.8.
SD3-60 SHERPA...................  1/2004, dated July  SB.5.2.
                                   13, 2004.

[[Page 34803]]

 
SD3-SHERPA......................  1/2004, dated July  SB.6.2.
                                   13, 2004.
------------------------------------------------------------------------

Revision of Airworthiness Limitation (AWL) Section

    (g) Within 180 days after the effective date of this AD: Revise 
the AWL section of the Instructions for Continued Airworthiness by 
incorporating airplane maintenance manual (AMM) sections 5-20-01 and 
5-20-02 as introduced by the Shorts temporary revisions (TR) 
specified in Table 2 of this AD into the AWL section of the AMMs for 
the airplane models specified in Table 2. Thereafter, except as 
provided by paragraph (i) of this AD, no alternative structural 
inspection intervals may be approved for the longitudinal skin 
joints in the fuselage pressure shell.


    Note 3: The requirements of paragraph (g) of this AD may be done 
by inserting a copy of the applicable TR into the applicable AMM. 
When the TR has been included in general revisions of the AMM, the 
general revisions may be inserted in the AMM and the TR may be 
removed, provided the relevant information in the general revision 
is identical to that in the TR.


                                        Table 2.--AMM Temporary Revisions
----------------------------------------------------------------------------------------------------------------
            Airplane model                Temporary revision             Dated                    To AMM
----------------------------------------------------------------------------------------------------------------
SD3-30...............................  TR330-AMM-13...........  June 21, 2004..........  SD3-30 AMM.
SD3-30...............................  TR330-AMM-14...........  June 21, 2004..........  SD3-30 AMM.
SD3-60...............................  TR360-AMM-33...........  July 27, 2004..........  SD3-60 AMM.
SD3-60...............................  TR360-AMM-34...........  July 27, 2004..........  SD3-60 AMM.
SD3-60 SHERPA........................  TRSD360S-AMM-14........  July 29, 2004..........  SD3-60 SHERPA AMM.
SD3-60 SHERPA........................  TRSD360S-AMM-15........  July 29, 2004..........  SD3-60 SHERPA AMM.
SD3-SHERPA...........................  TRSD3S-AMM-15..........  July 28, 2004..........  SD3 SHERPA AMM.
SD3-SHERPA...........................  TRSD3S-AMM-16..........  July 28, 2004..........  SD3 SHERPA AMM.
----------------------------------------------------------------------------------------------------------------

Resistance Check, Inspection, and Jumper Installation

    (h) Within 180 days after the effective date of this AD: Perform 
the insulation resistance check, general visual inspections, and 
bonding jumper wire installations; in accordance with Shorts Service 
Bulletin SD330-28-37, SD360-28-23, SD360 SHERPA-28-3, or SD3 SHERPA-
28-2; all dated June 2004; as applicable. If any defect or damage is 
discovered during any inspection or check required by this AD, 
before further flight, repair the defect or damage using a method 
approved by either the Manager, International Branch, ANM-116, 
Transport Airplane Directorate, FAA; or the Civil Aviation Authority 
(CAA) (or its delegated agent).


    Note 4: For the purposes of this AD, a general visual inspection 
is: ``A visual examination of an interior or exterior area, 
installation, or assembly to detect obvious damage, failure, or 
irregularity. This level of inspection is made from within touching 
distance unless otherwise specified. A mirror may be necessary to 
ensure visual access to all surfaces in the inspection area. This 
level of inspection is made under normally available lighting 
conditions such as daylight, hangar lighting, flashlight, or 
droplight and may require removal or opening of access panels or 
doors. Stands, ladders, or platforms may be required to gain 
proximity to the area being checked.''

Alternative Methods of Compliance (AMOCs)

    (i)(1) The Manager, International Branch, ANM-116, Transport 
Airplane Directorate, FAA, has the authority to approve AMOCs for 
this AD, if requested in accordance with the procedures found in 14 
CFR 39.19.
    (2) Before using any AMOC approved in accordance with Sec.  
39.19 on any airplane to which the AMOC applies, notify the 
appropriate principal inspector in the FAA Flight Standards 
Certificate Holding District Office.

Related Information

    (j) British airworthiness directive G-2004-0021 R1, dated 
September 15, 2004, also addresses the subject of this AD.

Material Incorporated by Reference

    (k) You must use the applicable service information specified in 
Table 3, Table 4, and Table 5 of this AD to perform the actions that 
are required by this AD, unless the AD specifies otherwise. (The 
document number of the advance amendment bulletins is listed only on 
page 1 of those documents.) The Director of the Federal Register 
approved the incorporation by reference of these documents in 
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Short 
Brothers, Airworthiness & Engineering Quality, P.O. Box 241, Airport 
Road, Belfast BT3 9DZ, Northern Ireland, for a copy of this service 
information. You may review copies at the Docket Management 
Facility, U.S. Department of Transportation, 400 Seventh Street SW., 
Room PL-401, Nassif Building, Washington, DC; on the Internet at 
http://dms.dot.gov; or at the National Archives and Records 
Administration (NARA). For information on the availability of this 
material at the NARA, call (202) 741-6030, or go to http://
www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html.

                         Table 3.--Shorts Temporary Revisions Incorporated by Reference
----------------------------------------------------------------------------------------------------------------
            Temporary revision                         Dated                 To airplane  maintenance  manual
----------------------------------------------------------------------------------------------------------------
TR330-AMM-13.............................  June 21, 2004...............  SD3-30.
TR330-AMM-14.............................  June 21, 2004...............  SD3-30.
TR360-AMM-33.............................  July 27, 2004...............  SD3-60.
TR360-AMM-34.............................  July 27, 2004...............  SD3-60.
TRSD360S-AMM-14..........................  July 29, 2004...............  SD3-60 SHERPA.
TRSD360S-AMM-15..........................  July 29, 2004...............  SD3-60 SHERPA.
TRSD3S-AMM-15............................  July 28, 2004...............  SD3 SHERPA.
TRSD3S-AMM-16............................  July 28, 2004...............  SD3 SHERPA.
----------------------------------------------------------------------------------------------------------------


[[Page 34804]]


 Table 4.--Shorts Advance Amendment Bulletins Incorporated by Reference
------------------------------------------------------------------------
       Advance amendment bulletin           To airplane flight manual
------------------------------------------------------------------------
1/2004, dated July 13, 2004............  SBH.3.2, SBH.3.3, SBH.3.6,
                                          SBH.3.7, SBH.3.8, and SB.3.9.
1/2004, dated July 13, 2004............  SB.4.3, SB.4.6, and SB.4.8.
1/2004, dated July 13, 2004............  SB.5.2.
1/2004, dated July 13, 2004............  SB.6.2.
------------------------------------------------------------------------


      Table 5.--Shorts Service Bulletins Incorporated by Reference
------------------------------------------------------------------------
             Service bulletin                          Dated
------------------------------------------------------------------------
SD330-28-37..............................  June 2004.
SD360-28-23..............................  June 2004.
SD360 SHERPA-28-3........................  June 2004.
SD3 SHERPA-28-2..........................  June 2004.
------------------------------------------------------------------------


    Issued in Renton, Washington, on June 5, 2006.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 06-5288 Filed 6-15-06; 8:45 am]
BILLING CODE 4910-13-P