Airworthiness Directives; Gulfstream Model G-IV, GIV-X, and GV-SP Series Airplanes and Model GV Airplanes, 40061-40065 [E9-19063]

Download as PDF Federal Register / Vol. 74, No. 153 / Tuesday, August 11, 2009 / Rules and Regulations SUMMARY: The Farm Credit Administration (FCA or Agency), through the FCA Board (Board), issued a final rule under parts 619, 620, and 621 on June 17, 2009, amending FCA’s regulations related to disclosure and reporting practices of Farm Credit System institutions. In accordance with 12 U.S.C. 2252, the effective date of the final rule is 30 days from the date of publication in the Federal Register during which either or both Houses of Congress are in session. Based on the records of the sessions of Congress, the effective date of the regulations is August 5, 2009. DATES: Effective Date: Under the authority of 12 U.S.C. 2252, the regulation amending 12 CFR parts 619, 620, and 621 published on June 17, 2009 (74 FR 28597), is effective August 5, 2009. FOR FURTHER INFORMATION CONTACT: Thomas R. Risdal, Senior Policy Analyst, Office of Regulatory Policy, Farm Credit Administration, McLean, Virginia 22102–5090, (703) 883–4498, TTY (703) 883–4434, or Robert Taylor, Attorney, Office of General Counsel, Farm Credit Administration, McLean, Virginia 22102–5090, (703) 883–4020, TTY (703) 883–4020. (12 U.S.C. 2252(a)(9) and (10)) Dated: August 5, 2009. Roland E. Smith, Secretary, Farm Credit Administration Board. [FR Doc. E9–19122 Filed 8–10–09; 8:45 am] BILLING CODE 6705–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2009–0683; Directorate Identifier 2009–NM–129–AD; Amendment 39–15991; AD 2009–17–01] RIN 2120–AA64 Airworthiness Directives; Gulfstream Model G–IV, GIV–X, and GV–SP Series Airplanes and Model GV Airplanes jlentini on DSKJ8SOYB1PROD with RULES AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments. SUMMARY: We are adopting a new airworthiness directive (AD) for certain VerDate Nov<24>2008 16:58 Aug 10, 2009 Jkt 217001 Gulfstream Model G–IV, GIV–X, GV–SP series airplanes and Model GV airplanes. This AD requires, for certain airplanes, a one-time inspection for sealant applied to the exterior of the auxiliary power unit (APU) enclosure (firewall), and, for airplanes with the subject sealant and certain other airplanes, a revision of the airplane flight manual to prohibit operation of the APU during certain ground and flight operations. This AD results from notification from the airplane manufacturer that an improper, flammable sealant was used on the interior and exterior of the APU enclosure (firewall). We are issuing this AD to prevent this flammable sealant from igniting the exterior surfaces of the APU enclosure (firewall) under certain anomalous conditions such as an APU failure/APU compartment fire, which could result in propagation of an uncontained fire to other critical areas of the airplane. DATES: This AD is effective August 26, 2009. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the AD as of August 26, 2009. We must receive comments on this AD by October 13, 2009. You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments. • Fax: 202–493–2251. • Mail: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue, SE., Washington, DC 20590. • Hand Delivery: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this AD, contact Gulfstream Aerospace Corporation, Technical Publications Dept., P.O. Box 2206, Savannah, Georgia 31402–2206; telephone 800–810–4853; fax 912–965–3520; e-mail pubs@gulfstream.com; Internet https:// www.gulfstream.com/product_support/ technical_pubs/pubs/index.htm. ADDRESSES: PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 40061 Examining the AD Docket You may examine the AD docket on the Internet at https:// 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 street address for the Docket Office (telephone 800–647– 5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Sanford Proveaux, Aerospace Engineer, Propulsion and Services Branch, ACE– 118A, FAA, Atlanta Aircraft Certification Office, One Crown Center, 1895 Phoenix Boulevard, Suite 450, Atlanta, Georgia 30349; telephone (770) 703–6049; fax (770) 703–6097. SUPPLEMENTARY INFORMATION: Discussion The manufacturer has notified us that an improper, flammable sealant (GMS 4107) was used on interior angles formed by sheet intersections and titanium sheet mating surfaces of the auxiliary power unit (APU) enclosure (firewall). This flammable sealant was also used to coat rivet heads on the interior and exterior surfaces of the APU enclosure (firewall). In some places the sealant was used by design, and in other places it was used in error. This sealant could ignite the exterior surfaces of the APU enclosure (firewall) under certain anomalous conditions such as an APU failure/APU compartment fire. This condition, if not corrected, could result in propagation of an uncontained fire to other critical areas of the airplane. Relevant Service Information We reviewed the Gulfstream alert customer bulletins listed in the following table. The alert customer bulletins for Model G–IV series airplanes and Model GV airplanes describe procedures for a one-time inspection of the APU enclosure (firewall) for overcoat application of the flammable sealant on rivets or fillet seals on panel joints. For Model GIV–X and GV–SP series airplanes, and airplanes with flammable sealant found during the inspection, the alert customer bulletins describe revising the applicable airplane flight manual (AFM) and reporting compliance to Gulfstream. E:\FR\FM\11AUR1.SGM 11AUR1 40062 Federal Register / Vol. 74, No. 153 / Tuesday, August 11, 2009 / Rules and Regulations TABLE—APPLICABLE GULFSTREAM ALERT CUSTOMER BULLETINS For model— Use— Which includes— To the— G–IV (G300) series airplanes. Gulfstream G300 Alert Customer Bulletin 40A, dated June 30, 2009, including Service Reply Card, Parts I and II. Gulfstream G400 Alert Customer Bulletin 40A, dated June 30, 2009, including Service Reply Card, Parts I and II. Gulfstream IV Alert Customer Bulletin 40A, dated June 30, 2009, including Service Reply Card, Parts I and II. Gulfstream G350 Alert Customer Bulletin 8A, dated June 30, 2009, including Service Reply Card. Gulfstream G450 Alert Customer Bulletin 8A, dated June 30, 2009, including Service Reply Card. Gulfstream V Alert Customer Bulletin 29A, dated June 30, 2009, including Service Reply Card, Parts I and II. Gulfstream G500 Alert Customer Bulletin 9A, dated June 30, 2009, including Service Reply Card. Gulfstream G550 Alert Customer Bulletin 9A, dated June 30, 2009, including Service Reply Card. Gulfstream G–IV/G300/G400 AFM Supplement G–IV–2009–02, Revision 1, dated June 25, 2009. Gulfstream G–IV/G300/G400 AFM Supplement G–IV–2009–02, Revision 1, dated June 25, 2009. Gulfstream G–IV/G300/G400 AFM Supplement G–IV–2009–02, Revision 1, dated June 25, 2009. Gulfstream G450/G350 AFM Supplement G450–2009–03, Revision 1, dated June 25, 2009. Gulfstream G450/G350 AFM Supplement G450–2009–03, Revision 1, dated June 25, 2009. Gulfstream GV AFM Supplement GV–2009– 03, Revision 1, dated June 25, 2009. Gulfstream G300 AFM. Gulfstream G550/G500 AFM G550–2009–03, Revision 1, 25, 2009. Gulfstream G550/G500 AFM G550–2009–03, Revision 1, 25, 2009. Supplement dated June Gulfstream G500 AFM. Supplement dated June Gulfstream G550 AFM. G–IV (G400) series airplanes. G–IV series airplanes ... GIV–X (G350) series airplanes. GIV–X (G450) series airplanes. GV airplanes ................. GV–SP (G500) series airplanes. GV–SP (G550) series airplanes. FAA’s Determination and Requirements of This AD Clarification of Statement in Gulfstream Alert Customer Bulletins We are issuing this AD because we evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop in other products of these same type designs. This AD requires accomplishing the actions specified in the service information described previously, except as discussed under ‘‘Differences Between the AD and the Service Information.’’ The Gulfstream alert customer bulletins specified in the table titled ‘‘Table 1—Applicable alert customer bulletins including airplane flight manual (AFM) supplements, and AFMs’’ of this AD include a statement in the Accomplishment Instructions to inform operators to contact Gulfstream ‘‘if technical assistance is required’’ in accomplishing the actions specified in the alert customer bulletins. We have included Note 2 in this AD to clarify that any deviation from the instructions provided in the applicable alert customer bulletin must be approved as an alternative method of compliance under the provisions of paragraph (l) of this AD. jlentini on DSKJ8SOYB1PROD with RULES Differences Between the AD and the Service Information Although the Gulfstream alert customer bulletins specified in the table titled ‘‘Table 1—Applicable alert customer bulletins including airplane flight manual (AFM) supplements, and AFMs’’ of this AD specify to submit information to the manufacturer, this AD does not include such a requirement. Although certain Gulfstream alert customer bulletins specified in the table titled ‘‘Table 1—Applicable alert customer bulletins including airplane flight manual (AFM) supplements, and AFMs’’ of this AD specify only to ‘‘inspect’’ for flammable sealant on the APU enclosure (firewall), we have determined that the procedures in those Gulfstream alert customer bulletins should be described as a ‘‘general visual inspection.’’ Note 1 has been included in this AD to define this type of inspection. VerDate Nov<24>2008 16:58 Aug 10, 2009 Jkt 217001 Interim Action We consider this AD interim action. If final action is later identified, we might consider further rulemaking then. FAA’s Justification and Determination of the Effective Date The use of flammable sealant in the construction of the primary APU enclosure (firewall) compromises the integrity of the enclosure (firewall). If an APU fire occurs, the flammable sealant can ignite the exterior of the APU enclosure (firewall). This area is very confined and surrounded by primary airframe structure that carries the empennage loads. Primary flight controls for pitch and yaw are routed through the area adjacent to the APU PO 00000 Frm 00006 Fmt 4700 Sfmt 4700 Gulfstream G400 AFM. Gulfstream G–IV AFM. Gulfstream G350 AFM. Gulfstream G450 AFM. Gulfstream GV AFM. enclosure (firewall). Because of our requirement to promote safe flight of civil aircraft and thus the critical need to assure the structural integrity and proper functioning of the APU enclosure (firewall), and the short compliance time involved with this action, this AD must be issued immediately. Because an unsafe condition exists that requires the immediate adoption of this AD, we find that notice and opportunity for prior public comment hereon are impracticable and that good cause exists for making this amendment effective in less than 30 days. Comments Invited This AD is a final rule that involves requirements affecting flight safety, and we did not provide you with notice and an opportunity to provide your comments before it becomes effective. However, we invite you to send any written data, views, or arguments about this AD. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA– 2009–0683; Directorate Identifier 2009– NM–129–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this AD. We will consider all comments received by the closing date and may amend this AD because of those comments. We will post all comments we receive, without change, to https:// www.regulations.gov, including any personal information you provide. We E:\FR\FM\11AUR1.SGM 11AUR1 Federal Register / Vol. 74, No. 153 / Tuesday, August 11, 2009 / Rules and Regulations will also post a report summarizing each substantive verbal contact we receive about this AD. 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 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. You can find our regulatory evaluation and the estimated costs of compliance in the AD Docket. 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: ■ PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: ■ 2009–17–01 Gulfstream Aerospace Corporation: Amendment 39–15991. Docket No. FAA–2009–0683; Directorate Identifier 2009–NM–129–AD. Effective Date (a) This airworthiness directive (AD) is effective August 26, 2009. Affected ADs (b) None. Applicability (c) This AD applies to the Gulfstream airplanes identified in paragraphs (c)(1), (c)(2), (c)(3), and (c)(4) of this AD, certificated in any category. 40063 (1) Model G–IV series airplanes, having serial numbers (S/Ns) 1000 and subsequent. (2) Model GIV–X series airplanes, having S/Ns 4001 through 4146 inclusive, and S/Ns 4148 through 4150 inclusive. (3) Model GV airplanes, having S/Ns 501 and subsequent. (4) Model GV–SP series airplanes, having S/Ns 5001 through 5204 inclusive, S/Ns 5206 through 5217 inclusive, and S/N 5219. Subject (d) Air Transport Association (ATA) of America Codes 53: Fuselage, and 49: Airborne Auxiliary Power. Unsafe Condition (e) This AD results from notification from the airplane manufacturer that an improper, flammable sealant was used on the interior and exterior of the auxiliary power unit (APU) enclosure (firewall). The Federal Aviation Administration is issuing this AD to prevent this flammable sealant from igniting the exterior surfaces of the APU enclosure (firewall) under certain anomalous conditions such as an APU failure/APU compartment fire, which could result in propagation of an uncontained fire to other critical areas of the airplane. Compliance (f) You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Inspection for Flammable Sealant (g) For Model G–IV series airplanes identified in paragraph (c)(1) of this AD, and Model GV airplanes identified in paragraph (c)(3) of this AD: Within 21 days after the effective date of this AD, except as provided by paragraph (k) of this AD, perform a general visual inspection of the exterior of the APU enclosure (firewall) to detect overcoat application of sealant on rivets or fillet seals on panel joints, in accordance with the Accomplishment Instructions of the applicable Gulfstream alert customer bulletin specified in Table 1 of this AD. TABLE 1—APPLICABLE ALERT CUSTOMER BULLETINS INCLUDING AIRPLANE FLIGHT MANUAL (AFM) SUPPLEMENTS, AND AFMS For model— Use— Which includes— To the— G–IV (G300) series airplanes. Gulfstream G300 Alert Customer Bulletin 40A, dated June 30, 2009, including Service Reply Card, Parts I and II. Gulfstream G400 Alert Customer Bulletin 40A, dated June 30, 2009, including Service Reply Card, Parts I and II. Gulfstream IV Alert Customer Bulletin 40A, dated June 30, 2009, including Service Reply Card, Parts I and II. Gulfstream G350 Alert Customer Bulletin 8A, dated June 30, 2009, including Service Reply Card. Gulfstream G450 Alert Customer Bulletin 8A, dated June 30, 2009, including Service Reply Card. Gulfstream V Alert Customer Bulletin 29A, dated June 30, 2009, including Service Reply Card, Parts I and II. Gulfstream G–IV/G300/G400 AFM Supplement G–IV–2009–02, Revision 1, dated June 25, 2009. Gulfstream G–IV/G300/G400 AFM Supplement G–IV–2009–02, Revision 1, dated June 25, 2009. Gulfstream G–IV/G300/G400 AFM Supplement G–IV–2009–02, Revision 1, dated June 25, 2009. Gulfstream G450/G350 AFM Supplement G450–2009–03, Revision 1, dated June 25, 2009. Gulfstream G450/G350 AFM Supplement G450–2009–03, Revision 1, dated June 25, 2009. Gulfstream GV AFM Supplement GV–2009– 03, Revision 1, dated June 25, 2009. Gulfstream G300 AFM. G–IV (G400) series airplanes. G–IV series airplanes ... jlentini on DSKJ8SOYB1PROD with RULES GIV–X (G350) series airplanes. GIV–X (G450) series airplanes. GV airplanes ................. VerDate Nov<24>2008 16:58 Aug 10, 2009 Jkt 217001 PO 00000 Frm 00007 Fmt 4700 Sfmt 4700 E:\FR\FM\11AUR1.SGM 11AUR1 Gulfstream G400 AFM. Gulfstream G–IV AFM. Gulfstream G350 AFM. Gulfstream G450 AFM. Gulfstream GV AFM. 40064 Federal Register / Vol. 74, No. 153 / Tuesday, August 11, 2009 / Rules and Regulations TABLE 1—APPLICABLE ALERT CUSTOMER BULLETINS INCLUDING AIRPLANE FLIGHT MANUAL (AFM) SUPPLEMENTS, AND AFMS—Continued For model— Use— Which includes— GV–SP (G500) series airplanes. Gulfstream G500 Alert Customer Bulletin 9A, dated June 30, 2009, including Service Reply Card. Gulfstream G550 Alert Customer Bulletin 9A, dated June 30, 2009, including Service Reply Card. Gulfstream G550/G500 AFM G550–2009–03, Revision 1, 25, 2009. Gulfstream G550/G500 AFM G550–2009–03, Revision 1, 25, 2009. GV–SP (G550) series airplanes. (1) If no exterior sealant is found applied during the inspection done in accordance with paragraph (g) of this AD: No further action is required by this paragraph. (2) If exterior sealant is found applied during the inspection done in accordance with paragraph (g) of this AD: Do the actions specified in paragraph (h) of this AD. Note 1: 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.’’ Note 2: A statement in the Accomplishment Instructions of the applicable Gulfstream alert customer bulletins specified in Table 1 of this AD instructs operators to contact Gulfstream if technical assistance is needed in accomplishing the alert customer bulletin. However, any deviation from the instructions provided in the applicable alert customer bulletin must be approved as an alternative method of compliance under paragraph (l) of this AD. Revision of the AFM (h) For Model GIV–X series airplanes identified in paragraph (c)(2) of this AD, Model GV–SP series airplanes identified in paragraph (c)(4) of this AD, and Model G–IV series airplanes and Model GV airplanes with flammable sealant on the exterior of the APU enclosure (firewall) identified during the inspection required by paragraph (g) of this AD: At the applicable time specified in paragraph (h)(1) or (h)(2) of this AD, revise the Limitations Section of the applicable Gulfstream AFM specified in Table 1 of this AD to include the information in the applicable Gulfstream AFM supplement specified in Table 1 of this AD. These AFM supplements introduce limitations on the use of the APU during certain ground and flight operations. Note 3: This AFM revision may be done by inserting a copy of the applicable AFM supplement into the applicable AFM To the— Supplement dated June Gulfstream G500 AFM. Supplement dated June Gulfstream G550 AFM. specified in Table 1 of this AD. When the supplement has been included in the general revisions of the AFM, the general revisions may be inserted in the AFM, provided the relevant information in the general revision is identical to that in the applicable AFM supplement specified in Table 1 of this AD. (1) For Model G–IV series airplanes and Model GV airplanes with flammable sealant on the exterior of the APU enclosure (firewall) identified during the inspection required by paragraph (g) of this AD: Prior to further flight following the inspection done in accordance with paragraph (g) of this AD. (2) For Model GIV–X series airplanes identified in paragraph (c)(2) of this AD, and Model GV–SP series airplanes identified in paragraph (c)(4) of this AD: Within 21 days after the effective date of this AD. Credit for Actions Done Using Previous Service Information (i) Inspecting for flammable sealant and revising the AFM before the effective date of this AD using the applicable alert customer bulletin and AFM supplement specified in Table 2 of this AD are acceptable for compliance with the corresponding actions specified in this AD. TABLE 2—ACCEPTABLE ALERT CUSTOMER BULLETINS INCLUDING AFM SUPPLEMENTS For model— Use— Which includes— To the— G–IV (G300) series airplanes. Gulfstream G300 Alert Customer Bulletin 40, dated May 21, 2009, including Service Reply Card, Parts I and II. Gulfstream Alert Customer Bulletin 40, dated May 21, 2009, including Service Reply Card, Parts I and II. Gulfstream Alert Customer Bulletin 40, dated May 21, 2009, including Service Reply Card, Parts I and II. Gulfstream Alert Customer Bulletin 8, dated May 21, 2009, including Service Reply Card. Gulfstream Alert Customer Bulletin 8, dated May 21, 2009, including Service Reply Card. Gulfstream Alert Customer Bulletin 29, dated May 21, 2009, including Service Reply Card, Parts I and II. Gulfstream Alert Customer Bulletin 9, dated May 21, 2009, including Service Reply Card. Gulfstream Alert Customer Bulletin 9, dated May 21, 2009, including Service Reply Card. Gulfstream G–IV/G300/G400 AFM Supplement G–IV–2009–02, dated May 19, 2009. Gulfstream G300 AFM. Gulfstream G–IV/G300/G400 AFM Supplement G–IV–2009–02, dated May 19, 2009. Gulfstream G400 AFM. Gulfstream G–IV/G300/G400 AFM Supplement G–IV–2009–02, dated May 19, 2009. Gulfstream G–IV AFM. Gulfstream G450/G350 AFM Supplement G450–2009–03, dated May 19, 2009. Gulfstream G350 AFM. Gulfstream G450/G350 AFM Supplement G450–2009–03, dated May 19, 2009. Gulfstream G450 AFM. Gulfstream GV AFM Supplement GV–2009– 03, dated May 19, 2009. Gulfstream GV AFM. Gulfstream G550/G500 AFM Supplement G550–2009–03, dated May 19, 2009. Gulfstream G500 AFM. Gulfstream G550/G500 AFM Supplement G550–2009–03, dated May 19, 2009. Gulfstream G550 AFM. G–IV (G400) series airplanes. G–IV series airplanes ... GIV–X (G350) series airplanes. GIV–X (G450) series airplanes. jlentini on DSKJ8SOYB1PROD with RULES GV airplanes ................. GV–SP (G500) series airplanes. GV–SP (G550) series airplanes. VerDate Nov<24>2008 16:58 Aug 10, 2009 Jkt 217001 PO 00000 Frm 00008 Fmt 4700 Sfmt 4700 E:\FR\FM\11AUR1.SGM 11AUR1 Federal Register / Vol. 74, No. 153 / Tuesday, August 11, 2009 / Rules and Regulations No Reporting Required (j) Although the Gulfstream alert customer bulletins specified in Table 1 of this AD specify to submit information to the manufacturer, this AD does not include this requirement. Parts Installation (k) As of the effective date of this AD, no person may install an APU enclosure (firewall) that contains flammable sealant (GMS 4107) in the construction, on any airplane. Alternative Methods of Compliance (AMOCs) (l)(1) The Manager, Atlanta Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Sanford Proveaux, Aerospace Engineer, Propulsion and Services Branch, ACE–118A, FAA, Atlanta Aircraft Certification Office, One Crown Center, 1895 Phoenix Boulevard, Suite 450, Atlanta, Georgia 30349; telephone (770) 703–6049; fax (770) 703–6097. (2) To request a different method of compliance or a different compliance time 40065 for this AD, follow the procedures in 14 CFR 39.19. Before using any approved AMOC on any airplane to which the AMOC applies, notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate, or lacking a principal inspector, your local Flight Standards District Office. The AMOC approval letter must specifically reference this AD. Material Incorporated by Reference (m) You must use the service information contained in Table 3 of this AD to do the actions required by this AD, as applicable, unless the AD specifies otherwise. TABLE 3—MATERIAL INCORPORATED BY REFERENCE AFM supplement— AFM— Gulfstream G300 Alert Customer Bulletin 40A, dated June 30, 2009, including Service Reply Card, Parts I and II. Gulfstream G400 Alert Customer Bulletin 40A, dated June 30, 2009, including Service Reply Card, Parts I and II. Gulfstream IV Alert Customer Bulletin 40A, dated June 30, 2009, including Service Reply Card, Parts I and II. Gulfstream G350 Alert Customer Bulletin 8A, dated June 30, 2009, including Service Reply Card. Gulfstream G450 Alert Customer Bulletin 8A, dated June 30, 2009, including Service Reply Card. Gulfstream V Alert Customer Bulletin 29A, dated June 30, 2009, including Service Reply Card, Parts I and II. Gulfstream G500 Alert Customer Bulletin 9A, dated June 30, 2009, including Service Reply Card. Gulfstream G550 Alert Customer Bulletin 9A, dated June 30, 2009, including Service Reply Card. jlentini on DSKJ8SOYB1PROD with RULES Alert customer bulletin— Gulfstream G–IV/G300/G400 AFM Supplement G–IV– 2009–02, Revision 1, dated June 25, 2009. Gulfstream G300 AFM. Gulfstream G–IV/G300/G400 AFM Supplement G–IV– 2009–02, Revision 1, dated June 25, 2009. Gulfstream G400 AFM. Gulfstream G–IV/G300/G400 AFM Supplement G–IV– 2009–02, Revision 1, dated June 25, 2009. Gulfstream G450/G350 AFM Supplement G450–2009– 03, Revision 1, dated June 25, 2009. Gulfstream G450/G350 AFM Supplement G450–2009– 03, Revision 1, dated June 25, 2009. Gulfstream GV AFM Supplement GV–2009–03, Revision 1, dated June 25, 2009. Gulfstream G550/G500 AFM Supplement G550–2009– 03, Revision 1, dated June 25, 2009. Gulfstream G550/G500 AFM Supplement G550–2009– 03, Revision 1, dated June 25, 2009. Gulfstream G–IV AFM. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Gulfstream Aerospace Corporation, Technical Publications Dept., P.O. Box 2206, Savannah, Georgia 31402– 2206; telephone 800–810–4853; fax 912–965– 3520; e-mail pubs@gulfstream.com; Internet https://www.gulfstream.com/ product_support/technical_pubs/pubs/ index.htm. (3) You may review copies of the service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425–227–1221 or 425–227–1152. (4) You may also review copies of the service information that is incorporated by reference 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: https://www.archives.gov/federal_register/ code_of_federal_regulations/ ibr_locations.html. VerDate Nov<24>2008 16:58 Aug 10, 2009 Jkt 217001 Issued in Renton, Washington, on July 31, 2009. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E9–19063 Filed 8–10–09; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA–2009–0225; Airspace Docket No. 09–ANM–4] Establishment of Class E Airspace; Plentywood, MT AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. Frm 00009 Fmt 4700 Sfmt 4700 Gulfstream G450 AFM. Gulfstream GV AFM. Gulfstream G500 AFM. Gulfstream G550 AFM. Plentywood, MT. This will improve the safety of Instrument Flight Rules (IFR) aircraft executing the new RNAV GPS SIAP at Plentywood Sher-Wood Airport, Plentywood, MT. DATES: Effective Date: 0901 UTC, October 22, 2009. The Director of the Federal Register approves this incorporation by reference action under 1 CFR part 51, subject to the annual revision of FAA Order 7400.9 and publication of conforming amendments. FOR FURTHER INFORMATION CONTACT: Eldon Taylor, Federal Aviation Administration, Operations Support Group, Western Service Center, 1601 Lind Avenue, SW., Renton, WA 98057; telephone (425) 203–4537. SUPPLEMENTARY INFORMATION: History SUMMARY: This action will establish Class E airspace at Plentywood, MT. Controlled airspace is necessary to accommodate aircraft using a new Area Navigation (RNAV) Global Positioning System (GPS) Standard Instrument Approach Procedure (SIAP) at Plentywood Sher-Wood Airport, PO 00000 Gulfstream G350 AFM. On May 28, 2009, the FAA published in the Federal Register a notice of proposed rulemaking to establish additional controlled airspace at Plentywood, MT (74 FR 25459). Interested parties were invited to participate in this rulemaking effort by submitting written comments on the proposal to the FAA. No comments were received. E:\FR\FM\11AUR1.SGM 11AUR1

Agencies

[Federal Register Volume 74, Number 153 (Tuesday, August 11, 2009)]
[Rules and Regulations]
[Pages 40061-40065]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E9-19063]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2009-0683; Directorate Identifier 2009-NM-129-AD;
Amendment 39-15991; AD 2009-17-01]
RIN 2120-AA64

Airworthiness Directives; Gulfstream Model G-IV, GIV-X, and GV-SP
Series Airplanes and Model GV Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Gulfstream Model G-IV, GIV-X, GV-SP series airplanes and Model GV
airplanes. This AD requires, for certain airplanes, a one-time
inspection for sealant applied to the exterior of the auxiliary power
unit (APU) enclosure (firewall), and, for airplanes with the subject
sealant and certain other airplanes, a revision of the airplane flight
manual to prohibit operation of the APU during certain ground and
flight operations. This AD results from notification from the airplane
manufacturer that an improper, flammable sealant was used on the
interior and exterior of the APU enclosure (firewall). We are issuing
this AD to prevent this flammable sealant from igniting the exterior
surfaces of the APU enclosure (firewall) under certain anomalous
conditions such as an APU failure/APU compartment fire, which could
result in propagation of an uncontained fire to other critical areas of
the airplane.

DATES: This AD is effective August 26, 2009.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in the AD as of August 26,
2009.
We must receive comments on this AD by October 13, 2009.

ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments.
Fax: 202-493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590.
Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.
For service information identified in this AD, contact Gulfstream
Aerospace Corporation, Technical Publications Dept., P.O. Box 2206,
Savannah, Georgia 31402-2206; telephone 800-810-4853; fax 912-965-3520;
e-mail pubs@gulfstream.com; Internet https://www.gulfstream.com/product_support/technical_pubs/pubs/index.htm.

Examining the AD Docket

You may examine the AD docket on the Internet at https://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 street address for
the Docket Office (telephone 800-647-5527) is in the ADDRESSES section.
Comments will be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Sanford Proveaux, Aerospace Engineer,
Propulsion and Services Branch, ACE-118A, FAA, Atlanta Aircraft
Certification Office, One Crown Center, 1895 Phoenix Boulevard, Suite
450, Atlanta, Georgia 30349; telephone (770) 703-6049; fax (770) 703-
6097.

SUPPLEMENTARY INFORMATION:

Discussion

The manufacturer has notified us that an improper, flammable
sealant (GMS 4107) was used on interior angles formed by sheet
intersections and titanium sheet mating surfaces of the auxiliary power
unit (APU) enclosure (firewall). This flammable sealant was also used
to coat rivet heads on the interior and exterior surfaces of the APU
enclosure (firewall). In some places the sealant was used by design,
and in other places it was used in error. This sealant could ignite the
exterior surfaces of the APU enclosure (firewall) under certain
anomalous conditions such as an APU failure/APU compartment fire. This
condition, if not corrected, could result in propagation of an
uncontained fire to other critical areas of the airplane.

Relevant Service Information

We reviewed the Gulfstream alert customer bulletins listed in the
following table. The alert customer bulletins for Model G-IV series
airplanes and Model GV airplanes describe procedures for a one-time
inspection of the APU enclosure (firewall) for overcoat application of
the flammable sealant on rivets or fillet seals on panel joints. For
Model GIV-X and GV-SP series airplanes, and airplanes with flammable
sealant found during the inspection, the alert customer bulletins
describe revising the applicable airplane flight manual (AFM) and
reporting compliance to Gulfstream.

[[Page 40062]]

Table--Applicable Gulfstream Alert Customer Bulletins
----------------------------------------------------------------------------------------------------------------
For model-- Use-- Which includes-- To the--
----------------------------------------------------------------------------------------------------------------
G-IV (G300) series airplanes......... Gulfstream G300 Alert Gulfstream G-IV/G300/ Gulfstream G300 AFM.
Customer Bulletin 40A, G400 AFM Supplement G-
dated June 30, 2009, IV-2009-02, Revision
including Service 1, dated June 25, 2009.
Reply Card, Parts I
and II.
G-IV (G400) series airplanes......... Gulfstream G400 Alert Gulfstream G-IV/G300/ Gulfstream G400 AFM.
Customer Bulletin 40A, G400 AFM Supplement G-
dated June 30, 2009, IV-2009-02, Revision
including Service 1, dated June 25, 2009.
Reply Card, Parts I
and II.
G-IV series airplanes................ Gulfstream IV Alert Gulfstream G-IV/G300/ Gulfstream G-IV AFM.
Customer Bulletin 40A, G400 AFM Supplement G-
dated June 30, 2009, IV-2009-02, Revision
including Service 1, dated June 25, 2009.
Reply Card, Parts I
and II.
GIV-X (G350) series airplanes........ Gulfstream G350 Alert Gulfstream G450/G350 Gulfstream G350 AFM.
Customer Bulletin 8A, AFM Supplement G450-
dated June 30, 2009, 2009-03, Revision 1,
including Service dated June 25, 2009.
Reply Card.
GIV-X (G450) series airplanes........ Gulfstream G450 Alert Gulfstream G450/G350 Gulfstream G450 AFM.
Customer Bulletin 8A, AFM Supplement G450-
dated June 30, 2009, 2009-03, Revision 1,
including Service dated June 25, 2009.
Reply Card.
GV airplanes......................... Gulfstream V Alert Gulfstream GV AFM Gulfstream GV AFM.
Customer Bulletin 29A, Supplement GV-2009-03,
dated June 30, 2009, Revision 1, dated June
including Service 25, 2009.
Reply Card, Parts I
and II.
GV-SP (G500) series airplanes........ Gulfstream G500 Alert Gulfstream G550/G500 Gulfstream G500 AFM.
Customer Bulletin 9A, AFM Supplement G550-
dated June 30, 2009, 2009-03, Revision 1,
including Service dated June 25, 2009.
Reply Card.
GV-SP (G550) series airplanes........ Gulfstream G550 Alert Gulfstream G550/G500 Gulfstream G550 AFM.
Customer Bulletin 9A, AFM Supplement G550-
dated June 30, 2009, 2009-03, Revision 1,
including Service dated June 25, 2009.
Reply Card.
----------------------------------------------------------------------------------------------------------------

FAA's Determination and Requirements of This AD

We are issuing this AD because we evaluated all the relevant
information and determined the unsafe condition described previously is
likely to exist or develop in other products of these same type
designs. This AD requires accomplishing the actions specified in the
service information described previously, except as discussed under
``Differences Between the AD and the Service Information.''

Differences Between the AD and the Service Information

Although the Gulfstream alert customer bulletins specified in the
table titled ``Table 1--Applicable alert customer bulletins including
airplane flight manual (AFM) supplements, and AFMs'' of this AD specify
to submit information to the manufacturer, this AD does not include
such a requirement.
Although certain Gulfstream alert customer bulletins specified in
the table titled ``Table 1--Applicable alert customer bulletins
including airplane flight manual (AFM) supplements, and AFMs'' of this
AD specify only to ``inspect'' for flammable sealant on the APU
enclosure (firewall), we have determined that the procedures in those
Gulfstream alert customer bulletins should be described as a ``general
visual inspection.'' Note 1 has been included in this AD to define this
type of inspection.

Clarification of Statement in Gulfstream Alert Customer Bulletins

The Gulfstream alert customer bulletins specified in the table
titled ``Table 1--Applicable alert customer bulletins including
airplane flight manual (AFM) supplements, and AFMs'' of this AD include
a statement in the Accomplishment Instructions to inform operators to
contact Gulfstream ``if technical assistance is required'' in
accomplishing the actions specified in the alert customer bulletins. We
have included Note 2 in this AD to clarify that any deviation from the
instructions provided in the applicable alert customer bulletin must be
approved as an alternative method of compliance under the provisions of
paragraph (l) of this AD.

Interim Action

We consider this AD interim action. If final action is later
identified, we might consider further rulemaking then.

FAA's Justification and Determination of the Effective Date

The use of flammable sealant in the construction of the primary APU
enclosure (firewall) compromises the integrity of the enclosure
(firewall). If an APU fire occurs, the flammable sealant can ignite the
exterior of the APU enclosure (firewall). This area is very confined
and surrounded by primary airframe structure that carries the empennage
loads. Primary flight controls for pitch and yaw are routed through the
area adjacent to the APU enclosure (firewall). Because of our
requirement to promote safe flight of civil aircraft and thus the
critical need to assure the structural integrity and proper functioning
of the APU enclosure (firewall), and the short compliance time involved
with this action, this AD must be issued immediately.
Because an unsafe condition exists that requires the immediate
adoption of this AD, we find that notice and opportunity for prior
public comment hereon are impracticable and that good cause exists for
making this amendment effective in less than 30 days.

Comments Invited

This AD is a final rule that involves requirements affecting flight
safety, and we did not provide you with notice and an opportunity to
provide your comments before it becomes effective. However, we invite
you to send any written data, views, or arguments about this AD. Send
your comments to an address listed under the ADDRESSES section. Include
``Docket No. FAA-2009-0683; Directorate Identifier 2009-NM-129-AD'' at
the beginning of your comments. We specifically invite comments on the
overall regulatory, economic, environmental, and energy aspects of this
AD. We will consider all comments received by the closing date and may
amend this AD because of those comments.
We will post all comments we receive, without change, to https://www.regulations.gov, including any personal information you provide. We

[[Page 40063]]

will also post a report summarizing each substantive verbal contact we
receive about this AD.

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

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.
You can find our regulatory evaluation and the estimated costs of
compliance in the AD Docket.

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 FAA amends Sec. 39.13 by adding the following new AD:

2009-17-01 Gulfstream Aerospace Corporation: Amendment 39-15991.
Docket No. FAA-2009-0683; Directorate Identifier 2009-NM-129-AD.

Effective Date

(a) This airworthiness directive (AD) is effective August 26,
2009.

Affected ADs

(b) None.

Applicability

(c) This AD applies to the Gulfstream airplanes identified in
paragraphs (c)(1), (c)(2), (c)(3), and (c)(4) of this AD,
certificated in any category.
(1) Model G-IV series airplanes, having serial numbers (S/Ns)
1000 and subsequent.
(2) Model GIV-X series airplanes, having S/Ns 4001 through 4146
inclusive, and S/Ns 4148 through 4150 inclusive.
(3) Model GV airplanes, having S/Ns 501 and subsequent.
(4) Model GV-SP series airplanes, having S/Ns 5001 through 5204
inclusive, S/Ns 5206 through 5217 inclusive, and S/N 5219.

Subject

(d) Air Transport Association (ATA) of America Codes 53:
Fuselage, and 49: Airborne Auxiliary Power.

Unsafe Condition

(e) This AD results from notification from the airplane
manufacturer that an improper, flammable sealant was used on the
interior and exterior of the auxiliary power unit (APU) enclosure
(firewall). The Federal Aviation Administration is issuing this AD
to prevent this flammable sealant from igniting the exterior
surfaces of the APU enclosure (firewall) under certain anomalous
conditions such as an APU failure/APU compartment fire, which could
result in propagation of an uncontained fire to other critical areas
of the airplane.

Compliance

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

Inspection for Flammable Sealant

(g) For Model G-IV series airplanes identified in paragraph
(c)(1) of this AD, and Model GV airplanes identified in paragraph
(c)(3) of this AD: Within 21 days after the effective date of this
AD, except as provided by paragraph (k) of this AD, perform a
general visual inspection of the exterior of the APU enclosure
(firewall) to detect overcoat application of sealant on rivets or
fillet seals on panel joints, in accordance with the Accomplishment
Instructions of the applicable Gulfstream alert customer bulletin
specified in Table 1 of this AD.

Table 1--Applicable Alert Customer Bulletins Including Airplane Flight Manual (AFM) Supplements, and AFMs
----------------------------------------------------------------------------------------------------------------
For model-- Use-- Which includes-- To the--
----------------------------------------------------------------------------------------------------------------
G-IV (G300) series airplanes......... Gulfstream G300 Alert Gulfstream G-IV/G300/ Gulfstream G300 AFM.
Customer Bulletin 40A, G400 AFM Supplement G-
dated June 30, 2009, IV-2009-02, Revision
including Service 1, dated June 25, 2009.
Reply Card, Parts I
and II.
G-IV (G400) series airplanes......... Gulfstream G400 Alert Gulfstream G-IV/G300/ Gulfstream G400 AFM.
Customer Bulletin 40A, G400 AFM Supplement G-
dated June 30, 2009, IV-2009-02, Revision
including Service 1, dated June 25, 2009.
Reply Card, Parts I
and II.
G-IV series airplanes................ Gulfstream IV Alert Gulfstream G-IV/G300/ Gulfstream G-IV AFM.
Customer Bulletin 40A, G400 AFM Supplement G-
dated June 30, 2009, IV-2009-02, Revision
including Service 1, dated June 25, 2009.
Reply Card, Parts I
and II.
GIV-X (G350) series airplanes........ Gulfstream G350 Alert Gulfstream G450/G350 Gulfstream G350 AFM.
Customer Bulletin 8A, AFM Supplement G450-
dated June 30, 2009, 2009-03, Revision 1,
including Service dated June 25, 2009.
Reply Card.
GIV-X (G450) series airplanes........ Gulfstream G450 Alert Gulfstream G450/G350 Gulfstream G450 AFM.
Customer Bulletin 8A, AFM Supplement G450-
dated June 30, 2009, 2009-03, Revision 1,
including Service dated June 25, 2009.
Reply Card.
GV airplanes......................... Gulfstream V Alert Gulfstream GV AFM Gulfstream GV AFM.
Customer Bulletin 29A, Supplement GV-2009-03,
dated June 30, 2009, Revision 1, dated June
including Service 25, 2009.
Reply Card, Parts I
and II.

[[Page 40064]]

GV-SP (G500) series airplanes........ Gulfstream G500 Alert Gulfstream G550/G500 Gulfstream G500 AFM.
Customer Bulletin 9A, AFM Supplement G550-
dated June 30, 2009, 2009-03, Revision 1,
including Service dated June 25, 2009.
Reply Card.
GV-SP (G550) series airplanes........ Gulfstream G550 Alert Gulfstream G550/G500 Gulfstream G550 AFM.
Customer Bulletin 9A, AFM Supplement G550-
dated June 30, 2009, 2009-03, Revision 1,
including Service dated June 25, 2009.
Reply Card.
----------------------------------------------------------------------------------------------------------------

(1) If no exterior sealant is found applied during the
inspection done in accordance with paragraph (g) of this AD: No
further action is required by this paragraph.
(2) If exterior sealant is found applied during the inspection
done in accordance with paragraph (g) of this AD: Do the actions
specified in paragraph (h) of this AD.

Note 1: 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.''

Note 2: A statement in the Accomplishment Instructions of the
applicable Gulfstream alert customer bulletins specified in Table 1
of this AD instructs operators to contact Gulfstream if technical
assistance is needed in accomplishing the alert customer bulletin.
However, any deviation from the instructions provided in the
applicable alert customer bulletin must be approved as an
alternative method of compliance under paragraph (l) of this AD.

Revision of the AFM

(h) For Model GIV-X series airplanes identified in paragraph
(c)(2) of this AD, Model GV-SP series airplanes identified in
paragraph (c)(4) of this AD, and Model G-IV series airplanes and
Model GV airplanes with flammable sealant on the exterior of the APU
enclosure (firewall) identified during the inspection required by
paragraph (g) of this AD: At the applicable time specified in
paragraph (h)(1) or (h)(2) of this AD, revise the Limitations
Section of the applicable Gulfstream AFM specified in Table 1 of
this AD to include the information in the applicable Gulfstream AFM
supplement specified in Table 1 of this AD. These AFM supplements
introduce limitations on the use of the APU during certain ground
and flight operations.

Note 3: This AFM revision may be done by inserting a copy of the
applicable AFM supplement into the applicable AFM specified in Table
1 of this AD. When the supplement has been included in the general
revisions of the AFM, the general revisions may be inserted in the
AFM, provided the relevant information in the general revision is
identical to that in the applicable AFM supplement specified in
Table 1 of this AD.

(1) For Model G-IV series airplanes and Model GV airplanes with
flammable sealant on the exterior of the APU enclosure (firewall)
identified during the inspection required by paragraph (g) of this
AD: Prior to further flight following the inspection done in
accordance with paragraph (g) of this AD.
(2) For Model GIV-X series airplanes identified in paragraph
(c)(2) of this AD, and Model GV-SP series airplanes identified in
paragraph (c)(4) of this AD: Within 21 days after the effective date
of this AD.

Credit for Actions Done Using Previous Service Information

(i) Inspecting for flammable sealant and revising the AFM before
the effective date of this AD using the applicable alert customer
bulletin and AFM supplement specified in Table 2 of this AD are
acceptable for compliance with the corresponding actions specified
in this AD.

Table 2--Acceptable Alert Customer Bulletins Including AFM Supplements
----------------------------------------------------------------------------------------------------------------
For model-- Use-- Which includes-- To the--
----------------------------------------------------------------------------------------------------------------
G-IV (G300) series airplanes......... Gulfstream G300 Alert Gulfstream G-IV/G300/ Gulfstream G300 AFM.
Customer Bulletin 40, G400 AFM Supplement G-
dated May 21, 2009, IV-2009-02, dated May
including Service 19, 2009.
Reply Card, Parts I
and II.
G-IV (G400) series airplanes......... Gulfstream Alert Gulfstream G-IV/G300/ Gulfstream G400 AFM.
Customer Bulletin 40, G400 AFM Supplement G-
dated May 21, 2009, IV-2009-02, dated May
including Service 19, 2009.
Reply Card, Parts I
and II.
G-IV series airplanes................ Gulfstream Alert Gulfstream G-IV/G300/ Gulfstream G-IV AFM.
Customer Bulletin 40, G400 AFM Supplement G-
dated May 21, 2009, IV-2009-02, dated May
including Service 19, 2009.
Reply Card, Parts I
and II.
GIV-X (G350) series airplanes........ Gulfstream Alert Gulfstream G450/G350 Gulfstream G350 AFM.
Customer Bulletin 8, AFM Supplement G450-
dated May 21, 2009, 2009-03, dated May 19,
including Service 2009.
Reply Card.
GIV-X (G450) series airplanes........ Gulfstream Alert Gulfstream G450/G350 Gulfstream G450 AFM.
Customer Bulletin 8, AFM Supplement G450-
dated May 21, 2009, 2009-03, dated May 19,
including Service 2009.
Reply Card.
GV airplanes......................... Gulfstream Alert Gulfstream GV AFM Gulfstream GV AFM.
Customer Bulletin 29, Supplement GV-2009-03,
dated May 21, 2009, dated May 19, 2009.
including Service
Reply Card, Parts I
and II.
GV-SP (G500) series airplanes........ Gulfstream Alert Gulfstream G550/G500 Gulfstream G500 AFM.
Customer Bulletin 9, AFM Supplement G550-
dated May 21, 2009, 2009-03, dated May 19,
including Service 2009.
Reply Card.
GV-SP (G550) series airplanes........ Gulfstream Alert Gulfstream G550/G500 Gulfstream G550 AFM.
Customer Bulletin 9, AFM Supplement G550-
dated May 21, 2009, 2009-03, dated May 19,
including Service 2009.
Reply Card.
----------------------------------------------------------------------------------------------------------------

[[Page 40065]]

No Reporting Required

(j) Although the Gulfstream alert customer bulletins specified
in Table 1 of this AD specify to submit information to the
manufacturer, this AD does not include this requirement.

Parts Installation

(k) As of the effective date of this AD, no person may install
an APU enclosure (firewall) that contains flammable sealant (GMS
4107) in the construction, on any airplane.

Alternative Methods of Compliance (AMOCs)

(l)(1) The Manager, Atlanta Aircraft Certification Office, FAA,
has the authority to approve AMOCs for this AD, if requested using
the procedures found in 14 CFR 39.19. Send information to ATTN:
Sanford Proveaux, Aerospace Engineer, Propulsion and Services
Branch, ACE-118A, FAA, Atlanta Aircraft Certification Office, One
Crown Center, 1895 Phoenix Boulevard, Suite 450, Atlanta, Georgia
30349; telephone (770) 703-6049; fax (770) 703-6097.
(2) To request a different method of compliance or a different
compliance time for this AD, follow the procedures in 14 CFR 39.19.
Before using any approved AMOC on any airplane to which the AMOC
applies, notify your principal maintenance inspector (PMI) or
principal avionics inspector (PAI), as appropriate, or lacking a
principal inspector, your local Flight Standards District Office.
The AMOC approval letter must specifically reference this AD.

Material Incorporated by Reference

(m) You must use the service information contained in Table 3 of
this AD to do the actions required by this AD, as applicable, unless
the AD specifies otherwise.

Table 3--Material Incorporated by Reference
------------------------------------------------------------------------
Alert customer bulletin-- AFM supplement-- AFM--
------------------------------------------------------------------------
Gulfstream G300 Alert Customer Gulfstream G-IV/G300/ Gulfstream G300
Bulletin 40A, dated June 30, G400 AFM Supplement G- AFM.
2009, including Service Reply IV-2009-02, Revision
Card, Parts I and II. 1, dated June 25,
2009.
Gulfstream G400 Alert Customer Gulfstream G-IV/G300/ Gulfstream G400
Bulletin 40A, dated June 30, G400 AFM Supplement G- AFM.
2009, including Service Reply IV-2009-02, Revision
Card, Parts I and II. 1, dated June 25,
2009.
Gulfstream IV Alert Customer Gulfstream G-IV/G300/ Gulfstream G-IV
Bulletin 40A, dated June 30, G400 AFM Supplement G- AFM.
2009, including Service Reply IV-2009-02, Revision
Card, Parts I and II. 1, dated June 25,
2009.
Gulfstream G350 Alert Customer Gulfstream G450/G350 Gulfstream G350
Bulletin 8A, dated June 30, AFM Supplement G450- AFM.
2009, including Service Reply 2009-03, Revision 1,
Card. dated June 25, 2009.
Gulfstream G450 Alert Customer Gulfstream G450/G350 Gulfstream G450
Bulletin 8A, dated June 30, AFM Supplement G450- AFM.
2009, including Service Reply 2009-03, Revision 1,
Card. dated June 25, 2009.
Gulfstream V Alert Customer Gulfstream GV AFM Gulfstream GV
Bulletin 29A, dated June 30, Supplement GV-2009- AFM.
2009, including Service Reply 03, Revision 1, dated
Card, Parts I and II. June 25, 2009.
Gulfstream G500 Alert Customer Gulfstream G550/G500 Gulfstream G500
Bulletin 9A, dated June 30, AFM Supplement G550- AFM.
2009, including Service Reply 2009-03, Revision 1,
Card. dated June 25, 2009.
Gulfstream G550 Alert Customer Gulfstream G550/G500 Gulfstream G550
Bulletin 9A, dated June 30, AFM Supplement G550- AFM.
2009, including Service Reply 2009-03, Revision 1,
Card. dated June 25, 2009.
------------------------------------------------------------------------

(1) The Director of the Federal Register approved the
incorporation by reference of this service information under 5
U.S.C. 552(a) and 1 CFR part 51.
(2) For service information identified in this AD, contact
Gulfstream Aerospace Corporation, Technical Publications Dept., P.O.
Box 2206, Savannah, Georgia 31402-2206; telephone 800-810-4853; fax
912-965-3520; e-mail pubs@gulfstream.com; Internet https://www.gulfstream.com/product_support/technical_pubs/pubs/index.htm.
(3) You may review copies of the service information at the FAA,
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton,
Washington. For information on the availability of this material at
the FAA, call 425-227-1221 or 425-227-1152.
(4) You may also review copies of the service information that
is incorporated by reference 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: https://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

Issued in Renton, Washington, on July 31, 2009.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E9-19063 Filed 8-10-09; 8:45 am]
BILLING CODE 4910-13-P

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