Airworthiness Directives; The Boeing Company Airplanes, 53155-53159 [2012-21556]

Download as PDF Federal Register / Vol. 77, No. 170 / Friday, August 31, 2012 / Proposed Rules service information referenced above. We are proposing this AD because we evaluated all information provided by EASA and determined the unsafe condition exists and is likely to exist or develop on other products of the same type design. The proposed AD would require inspection of the oil filler plug vent hole at the next scheduled maintenance or within 110 flight hours after the effective date of this AD. If chips are found to be blocking the vent hole, additional corrective action is required before next flight. Costs of Compliance We estimate that this proposed AD would affect about 45 engines installed on airplanes of U.S. registry. We also estimate that it would take about 2.5 work-hours per product to comply with this proposed AD. The average labor rate is $85 per work-hour. Required parts would cost about $30 per engine. Based on these figures, we estimate the cost of the proposed AD to U.S. operators to be $10,913. 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. EMCDONALD on DSK67QTVN1PROD with PROPOSALS Regulatory Findings We determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify this proposed regulation: 1. Is not a ‘‘significant regulatory action’’ under Executive Order 12866; VerDate Mar<15>2010 11:21 Aug 30, 2012 Jkt 226001 53155 2. Is not a ‘‘significant rule’’ under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3. Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. We prepared a regulatory evaluation of the estimated costs to comply with this proposed AD and placed it in the AD docket. (f) Installation Prohibition After the effective date of this AD, do not install a gearbox with an S/N listed in TAE S/B TM TAE 125–1015, Initial Issued, dated April 27, 2012, into any engine unless the oil filler plug has passed the inspection required by paragraph (e)(1) of this AD. List of Subjects in 14 CFR Part 39 (h) Related Information (1) For more information about this AD, contact Frederick Zink, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; email: frederick.zink@faa.gov; telephone (781) 238–7779; fax (781) 238–7199. (2) Refer to MCAI Airworthiness Directive No. 2012–0112, dated June 22, 2012, and TAE S/B TM TAE 125–1015 P1, Initial Issue, dated April 27, 2012 for related information. (3) For service information identified in this AD, contact Thielert Aircraft Engines GmbH, Platanenstrasse 14 D–09350, Lichtenstein, Germany, telephone: +49– 37204–696–0; fax: +49–37204–696–2912; email: info@centurion-engines.com. You may review copies of the referenced service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: Thielert Aircraft Engines: Docket No. FAA– 2012–0885; Directorate Identifier 2012– NE–18–AD. (a) Comments Due Date We must receive comments by October 30, 2012. (b) Affected Airworthiness Directives (ADs) None. (c) Applicability This AD applies to all TAE 125–09–99 and TAE 125–02–114 reciprocating engines. (d) Reason This AD was prompted by an in-flight shutdown of an airplane equipped with an TAE 125–02–99 engine. We are issuing this AD to prevent engine in-flight shutdown or power loss, possibly resulting in reduced control of the airplane. (e) Actions and Compliance Unless already done, within 110 flight hours after the effective date of this AD, or at the next scheduled maintenance, do the following. (1) Remove the oil filler plug and check for chips blocking the vent hole in accordance with TAE Service Bulletin (S/B) TM TAE 125–1015 P1, Initial Issue, dated April 27, 2012. (2) If chips are found during the inspection in paragraph (e)(1) of this AD, disassemble the gearbox and check the radial shaft sealing rings (at the clutch and the propeller shaft) for leakage. If leakage is noted, replace the gearbox before the next flight. PO 00000 Frm 00002 Fmt 4702 Sfmt 4702 (g) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19. Issued in Burlington, Massachusetts, on August 24, 2012. Robert G. Mann, Acting Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2012–21524 Filed 8–30–12; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2011–1222; Directorate Identifier 2010–NM–268–AD] RIN 2120–AA64 Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period. AGENCY: We are revising an earlier proposed airworthiness directive (AD) for certain The Boeing Company Model 737–600, –700, –700C, –800, –900, and –900ER series airplanes. That NPRM proposed to require checking the escape slide girt for serviceability, and SUMMARY: E:\FR\FM\31AUP1.SGM 31AUP1 EMCDONALD on DSK67QTVN1PROD with PROPOSALS 53156 Federal Register / Vol. 77, No. 170 / Friday, August 31, 2012 / Proposed Rules replacement if necessary; modifying the cable routing provision; replacing the regulator padding; modifying the aspirator orientation; and modifying the valise. That NPRM also proposed to require, for certain airplanes, modifying or replacing the Vespel piston, modifying the pilot valve regulator, installing a new firing cable and safety pin, and modifying the slide valise. That NPRM was prompted by reports of escape slides failing to deploy from the forward and aft right-hand doors during scheduled maintenance slide deployments. This action revises that NPRM by adding airplanes to the applicability of that NPRM and specifying revised service information. We are proposing this supplemental NPRM to prevent failure of an escape slide to deploy, which could result in the slide being unusable during an emergency evacuation and increased likelihood of injury to passengers or crewmembers due to the difficulty in evacuating the airplane. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes. DATES: We must receive comments on this supplemental NPRM by October 15, 2012. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, 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 proposed AD, contact Goodrich Corporation, Aircraft Interior Products, Attn: Technical Publications, 3414 South Fifth Street, Phoenix, Arizona 85040; phone: 602–243–2270; Internet: https://www.goodrich.com/TechPubs. You may review copies of the referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington. For information on the availability of this material at the FAA, call 425–227–1221. VerDate Mar<15>2010 11:21 Aug 30, 2012 Jkt 226001 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 proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (phone: 800–647–5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Sarah Piccola, Aerospace Engineer, Cabin Safety & Environmental Systems Branch, ANM–150S, Seattle Aircraft Certification Office (ACO), FAA, 1601 Lind Avenue SW., Renton, Washington 98057–3356; phone: 425–917–6483; fax: 425–917–6590; email: sarah.piccola@ faa.gov. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA–2011–1222; Directorate Identifier 2010–NM–268–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD 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 will also post a report summarizing each substantive verbal contact we receive about this proposed AD. Discussion We issued an NPRM to amend 14 CFR part 39 to include an AD that would apply to The Boeing Company Model 737–600, –700, –700C, –800, –900, and –900ER series airplanes. That NPRM published in the Federal Register on November 8, 2011 (76 FR 69159). That NPRM proposed to require checking the escape slide girt for serviceability and replacement if necessary, modifying the cable routing provision, the aspirator orientation, the valise, and replacing the regulator padding. That NPRM also proposed to require, for certain airplanes, modifying or replacing the Vespel piston, modifying the pilot valve regulator, modifying the slide valise, PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 and installing a new firing cable and safety pin. Actions Since Previous NPRM (76 FR 69159, November 8, 2011) Was Issued Since we issued the previous NPRM (76 FR 69159, November 8, 2011), new service information has been issued that provides clarifications and minor corrections, and adds data. Additionally, an error was discovered in the part numbers (P/Ns) specified in paragraph (c), ‘‘Applicability,’’ of that NPRM. The specification of ‘‘P/N 5A3307–1, –3, –5, or –301, S/N BNG0001 through BNG5707 inclusive,’’ is incorrect. The part number should have read ‘‘P/N 5A3307–1, –3, –5, or –301, S/N BNG0001 through BNG14499 inclusive.’’ We have changed the supplemental NPRM in this regard. Comments We gave the public the opportunity to comment on the previous NPRM (76 FR 69159, November 8, 2011). The following presents the comments received on the NPRM and the FAA’s response to each comment. Requests To Use Revised Service Information Boeing, United Airlines (United), and Goodrich Corporation (Goodrich) requested that the previous NPRM (76 FR 69159, November 8, 2011) be changed to incorporate revised service information to ensure that operators are incorporating the most current revision of the service information. We agree that current service information should be incorporated into this supplemental NPRM. Goodrich Service Bulletin 5A3307–25–389, Revision 2, dated May 4, 2012; and Goodrich Service Bulletin 5A3307–25– 339, Revision 5, dated May 4, 2012; provide minor corrections, updated pricing, and additional data. The technical content of these documents has not been changed. We have changed paragraphs (g) and (h)(1) of the supplemental NPRM to refer to Goodrich Service Bulletin 5A3307–25– 389, Revision 2, dated May 4, 2012; and Goodrich Service Bulletin 5A3307–25– 339, Revision 5, dated May 4, 2012; as applicable. We have changed paragraph (i) of the supplemental NPRM to include credit for modifications of the escape slide done before the effective date of the AD using Goodrich Service Bulletin 5A3307–25–339, Revision 3, dated May 8, 2009; or Revision 4, dated October 1, 2011. Modification of the escape slide specified in Goodrich Service Bulletin 5A3307–25–389, Revision 2, dated May 4, 2012, consists of modifying the cable routing provision, replacing the E:\FR\FM\31AUP1.SGM 31AUP1 Federal Register / Vol. 77, No. 170 / Friday, August 31, 2012 / Proposed Rules regulator padding, modifying the aspirator orientation, and modifying the valise. Modification of the escape slide specified in Goodrich Service Bulletin 5A3307–25–339, Revision 5, dated May 4, 2012, consists of modifying the pilot valve regulator P/N 4A3865–2, –3, or –4, as applicable; installing a new firing cable and safety pin; and modifying the slide valise. EMCDONALD on DSK67QTVN1PROD with PROPOSALS Requests To Change Applicability Goodrich, Boeing, United, AirTran Airways (AirTran), and Southwest Airlines (Southwest) requested that we change or clarify the applicability of the pervious NPRM (76 FR 69159, November 8, 2011) to include slide P/N 5A3307–1, –3, –5, or –301, S/Ns BNG0001 through BNG14499 inclusive. Boeing stated that this change ‘‘will ensure that all applicable 5A3307 series evacuation slides have been identified for incorporation of the Goodrich Service Bulletin 5A3307–25–389 modifications.’’ We agree that S/Ns BNG0001 through BNG14499 inclusive should be included in the applicability of this supplemental NPRM as explained previously. We have changed paragraph (c) of the supplemental NPRM to include P/N 5A3307–1, –3, –5, or –301, S/N BNG0001 through BNG14499 inclusive. Requests To Remove Slide Part Numbers From the NPRM (76 FR 69159, November 8, 2011) Goodrich, United, and Boeing requested that we remove slide P/N 5A3086–1, –3, or –301, S/Ns B3F001 through B3F611 inclusive; P/N 5A3088– 1, –3, or –301, S/Ns B3A001 through B3A685 inclusive; from the NPRM (76 FR 69159, November 8, 2011). Goodrich stated that specification of slide P/N 5A3086–1, –3, or –301, S/Ns B3F001 through B3F611 inclusive; and P/N 5A3088–1, –3, or –301, S/Ns B3A001 through B3A685 inclusive; is inappropriate for the proposed AD, because the unsafe condition that the proposed AD addresses is not an issue for the P/Ns 5A3086 and 5A3088 series slides. Goodrich also stated that the design of the P/Ns 5A3086 and 5A3088 series slides precludes the type of event that has been experienced with the P/N 5A3307 series slides. Goodrich provided detailed information to support its request. We agree. Including these additional parts is confusing and is not directly related to the unsafe condition addressed by this supplemental NPRM. We have changed paragraph (c) of the supplemental NPRM to remove slide P/N 5A3086–1, –3, or –301, S/Ns B3F001 through B3F611 inclusive; and VerDate Mar<15>2010 11:21 Aug 30, 2012 Jkt 226001 P/N 5A3088–1, –3, or –301, S/Ns B3A001 through B3A685 inclusive; from the supplemental NPRM. Request To Remove Girt Check Goodrich requested that the girt check be removed from the previous NPRM (76 FR 69159, November 8, 2011). Goodrich stated that the girt condition was not a causative factor in the unsafe condition described in the previous NPRM. The girt condition check is not a configuration requirement of the slide modification, which addresses the slide nondeployment issue. Rather, the girt condition check is included in the Goodrich service information because it falls under the heading of good general maintenance practice. Goodrich stated that the girt check specified in the Goodrich service information was not a causative factor in the unsafe condition described by the previous NPRM and questions the need for it to be called out in the AD. We agree. The girt condition check is not a configuration requirement of the slide modification, which addresses the slide non-deployment issue. We have removed the girt condition check from paragraph (g) of the supplemental NPRM. Requests To Remove Parts Installation Restriction United, American, WestJet, Southwest, Goodrich, and AirTran requested that we remove paragraph (j) of the NPRM (76 FR 69159, November 8, 2011), which prohibits installing certain parts on any airplane after the effective date of the AD. The commenters stated that this prohibition would prevent the use of affected spare slide assemblies (un-modified) during modification of the slide units of the previous NPRM, as well as the removal and reinstallation of the same affected unit on an airplane. The commenters asserted that this requirement could restrict an airline’s ability to return an airplane to service due to a shortage of parts. Boeing requested that we remove paragraphs (j)(1) and (j)(3) from the previous NPRM (76 FR 69159, November 8, 2011). The P/N 5A3086–1, –3, and –301 evacuation slides; and P/N 5A3088–1, –3, and –301 evacuation slides are not affected by Goodrich Service Bulletin 5A3307–25–389, Revision 1, dated October 1, 2011, which is the subject of the previous NPRM. Boeing stated that, once the evacuation slide has been modified as specified in Goodrich Service Bulletin 5A3307–25–389, Revision 1, dated October 1, 2011, into the new P/N 5A3307–7 configuration, the old PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 53157 regulator and regulator valve padding parts will have been replaced with new parts; therefore, just listing P/N 5A3307–1, –3, –5, and –301 evacuation slides would cover the old regulator and regulator valve padding parts. We agree with removing the parts installation restriction, since this prohibition could make it difficult for operators to maintain their airplanes. After the effective date of the AD, if the slides are removed for any reason, this prohibition could lead to an airplane with slides having mixed part numbers. We have removed paragraph (j) from the supplemental NPRM, and redesiginated subsequent paragraphs accordingly. Request To Remove Repeated Wording United requested that we address the need for repeating accomplishment instructions within paragraphs (g) and (h) of the previous NPRM (76 FR 69159, November 8, 2011). United stated that this information is already contained within Goodrich Service Bulletins 5A3307–25–389, Revision 1, dated October 1, 2011; and 5A3307–25–339, Revision 4, dated October 1, 2011; respectively, and by repeating this information, the AD could contain dated information. We agree that repeating the specifics of the accomplishment instructions in paragraphs (g) and (h) of the supplemental NPRM is unnecessary in this case. We have changed paragraphs (g) and (h) of the supplemental NPRM to require modifying the escape slide in accordance with the applicable service information. We have described the specifics of modifying the escape slide in paragraphs (g) and (h) of the supplemental NPRM in the previous response under comment ‘‘Request to Use Revised Service Information.’’ No further change is necessary in this regard. Request To Remove Certain Part Numbers United requested that we address repetitive slide part numbers in the previous NPRM (76 FR 69159, November 8, 2011), which have already been subjected to previous AD rulemaking. United stated that including slide part numbers that were subjected to previously issued rulemaking, such as AD 2008–24–08, Amendment 39–15748 (73 FR 72320, November 28, 2008), undermines the rulemaking process and forces operators to demonstrate compliance against certain part numbers for a second time. We agree and have removed P/Ns 5A3307–1 and 5A3307–3, which were the subject of previous rulemaking (AD 2008–24–08, Amendment 39–15748 (73 E:\FR\FM\31AUP1.SGM 31AUP1 53158 Federal Register / Vol. 77, No. 170 / Friday, August 31, 2012 / Proposed Rules FR 72320, November 28, 2008)), from this supplemental NPRM. FAA’s Determination We are proposing this supplemental NPRM because we evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. Certain changes described above expand the scope of the original NPRM. As a result, we have determined that it is necessary to reopen the comment period to provide additional opportunity for the public to comment on this supplemental NPRM. Proposed Requirements of the Supplemental NPRM This supplemental NPRM would require accomplishing the actions specified in the service information described previously. Costs of Compliance We estimate that this proposed AD affects 557 airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: ESTIMATED COSTS Cost on U.S. operators Action Labor cost Parts cost Cost per product Modify girt and valise, and replace padding. Modify regulator valve, install cable and pin, and modify slide valise. Modify Vespel piston Optional Vespel piston replacement. 2 work-hours × $85 per hour = $170 ............. $223 ........................... $393 ........................... $218,901. 1 work-hour × $85 per hour = $85 ................. Between $1,749 and $1,836. Between $1,834 and $1,921. Between $1,021,538 and $1,069,997. 1 work-hour × $85 per hour = $85 ................. Up to 1 work-hour × $85 per hour = $85 ....... $0 ............................... Up to $612 ................. $85 ............................. Up to $697 ................. $47,345. Up to $388,229. We estimate the following costs to do any necessary replacements that would be required based on the results of the check of the girt. We have no way of determining the number of aircraft that might need these replacements. ON-CONDITION COSTS Action Labor cost Parts cost Cost per product Girt replacement (Goodrich Service Bulletin 5A3307– 25–389, Revision 2, dated May 4, 2012). 1 work-hour × $85 per hour = $85 ............................... $942 $1,027 According to the parts supplier, some of the costs of this proposed AD may be covered under warranty, thereby reducing the cost impact on affected individuals. We do not control warranty coverage for affected individuals. As a result, we have included all costs in our cost estimate. EMCDONALD on DSK67QTVN1PROD with PROPOSALS 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 VerDate Mar<15>2010 11:21 Aug 30, 2012 Jkt 226001 that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings We determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify this proposed regulation: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Is not a ‘‘significant rule’’ under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) 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. PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): The Boeing Company: Docket No. FAA– 2011–1222; Directorate Identifier 2010– NM–268–AD. (a) Comments Due Date We must receive comments by October 15, 2012. E:\FR\FM\31AUP1.SGM 31AUP1 Federal Register / Vol. 77, No. 170 / Friday, August 31, 2012 / Proposed Rules (b) Affected ADs This AD affects AD 2008–24–08, Amendment 39–15748 (73 FR 72320, November 28, 2008). (c) Applicability This AD applies to The Boeing Company Model 737–600, –700, –700C, –800, –900, and –900ER series airplanes; certificated in any category; with Goodrich Corporation door escape slide part number (P/N) 5A3307– 1, –3, –5, or –301, serial number (S/N) BNG0001 through BNG14499 inclusive. (d) Subject Joint Aircraft System Component (JASC)/ Air Transport Association (ATA) of America Code 25, Equipment/Furnishings. (e) Unsafe Condition This AD was prompted by reports of escape slides failing to deploy from the forward and aft right-hand doors during scheduled maintenance slide deployments. We are issuing this AD to prevent failure of an escape slide to deploy, which could result in the slide being unusable during an emergency evacuation and increased likelihood of injury to passengers or crewmembers due to the difficulty in evacuating the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Slide Modification Within 36 months after the effective date of this AD: Modify the escape slide in accordance with the Accomplishment Instructions of Goodrich Service Bulletin 5A3307–25–389, Revision 2, dated May 4, 2012. EMCDONALD on DSK67QTVN1PROD with PROPOSALS (h) Concurrent Requirements (1) For slide P/N 5A3307–301: Prior to or concurrently with accomplishing the actions required by paragraph (g) of this AD, modify the escape slide in accordance with the Accomplishment Instructions of Goodrich Service Bulletin 5A3307–25–339, Revision 5, dated May 4, 2012. (2) For slide P/N 5A3307–301 or 5A3307– 5: Prior to or concurrently with accomplishing the actions required by paragraph (g) of this AD, modify the Vespel piston in the regulator valves, or replace the Vespel piston with a new or serviceable Vespel piston P/N 3A3566–2 or 3A3832–2, as applicable, in accordance with the Accomplishment Instructions of Goodrich Service Bulletin 25–349, Revision 1, dated January 11, 2010. (2) This paragraph provides credit for the modification or replacement of the Vespel piston in the regulator valves required by paragraph (h)(2) of this AD, if those actions were performed before the effective date of this AD using Goodrich Service Bulletin 25– 349, dated September 15, 2004, which is not incorporated by reference in this AD. (j) Alternative Methods of Compliance (AMOCs) (1) The Manager, Seattle Aircraft Certification Office (ACO), FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the ACO, send it to the attention of the person identified in the Related Information section of this AD. Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ certificate holding district office. (k) Related Information (1) For more information about this AD, contact Sarah Piccola, Aerospace Engineer, Cabin Safety & Environmental Systems Branch, ANM–150S, Seattle Aircraft Certification Office (ACO), FAA, 1601 Lind Avenue SW., Renton, Washington 98057– 3356; phone: 425–917–6483; fax: 425–917– 6590; email: sarah.piccola@faa.gov. (2) For service information identified in this AD, contact Goodrich Corporation, Aircraft Interior Products, ATTN: Technical Publications, 3414 South Fifth Street, Phoenix, Arizona 85040; phone: 602–243– 2270; Internet: https://www.goodrich.com/ TechPubs. You may review copies of the referenced service information at the FAA, Transport Airplane Directorate, the FAA, 1601 Lind Avenue SW., Renton, Washington. For information on the availability of this material at the FAA, call 425–227–1221. Issued in Renton, Washington, on August 24, 2012. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2012–21556 Filed 8–30–12; 8:45 am] BILLING CODE 4910–13–P (i) Credit for Previous Actions (1) This paragraph provides credit for the actions required by paragraph (h)(1) of this AD, if those actions were performed before the effective date of this AD using Goodrich Service Bulletin 5A3307–25–339, Revision 1, dated September 26, 2003; Revision 2, dated March 31, 2004; Revision 3, dated May 8, 2009; or Revision 4, dated October 1, 2011; which are not incorporated by reference in this AD. VerDate Mar<15>2010 18:04 Aug 30, 2012 Jkt 226001 PO 00000 53159 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA–2012–0661; Airspace Docket No. 09–AWA–4] RIN 2120–AA66 Proposed Amendment to Class B Airspace; Detroit, MI Correction In proposed rule document 2012– 19902, beginning on page 48476–48491 in the issue of Thursday, August 14, 2012, make the following corrections: 1. In the first column titled ‘‘Area C’’, third paragraph, fifth line, ‘‘5-mile arc’’ should read, ‘‘15 mile arc.’’ 2. In the first column titled ‘‘Area C’’, third paragraph, eighth line, ‘‘5-mile arc’’ should read, ‘‘15 mile arc.’’ 3. In the first column titled ‘‘Area C’’, third paragraph, twenty-second line, ‘‘5mile arc’’ should read, ‘‘15 mile arc.’’ 4. In the first column titled ‘‘Area C’’, third paragraph, twenty-third line, ‘‘5mile arc’’ should read, ‘‘15 mile arc.’’ 5. In the second column titled ‘‘Area D’’, first paragraph, eighth line, ‘‘5-mile arc’’ should read, ‘‘15 mile arc.’’ 6. In the second column titled ‘‘Area D’’, first paragraph, eleventh line, ‘‘5mile arc’’ should read, ‘‘15 mile arc.’’ 7. In the second column titled ‘‘Area E’’, first paragraph, twenty-fourth line, ‘‘5-mile arc’’ should read, ‘‘15 mile arc.’’ 8. In the second column titled ‘‘Area E’’, first paragraph, twenty-seventh line, ‘‘5-mile arc’’ should read, ‘‘15 mile arc.’’ [FR Doc. C1–2012–19902 Filed 8–30–12; 8:45 am] BILLING CODE 1505–01–D DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Parts 91, 121, 125, and 135 [Docket No. FAA–2012–0752] Passenger Use of Portable Electronic Devices on Board Aircraft Federal Aviation Administration (FAA), DOT. ACTION: Notice of policy; request for comments. AGENCY: The FAA seeks comments on current policy, guidance, and procedures that aircraft operators (ranging from pilots of general aviation aircraft up to and including air carrier certificate holders at the major airlines) use when determining if passenger use of portable electronic devices (PEDs) SUMMARY: Frm 00006 Fmt 4702 Sfmt 4702 E:\FR\FM\31AUP1.SGM 31AUP1

Agencies

[Federal Register Volume 77, Number 170 (Friday, August 31, 2012)]
[Proposed Rules]
[Pages 53155-53159]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-21556]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2011-1222; Directorate Identifier 2010-NM-268-AD]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Supplemental notice of proposed rulemaking (NPRM); reopening of 
comment period.

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SUMMARY: We are revising an earlier proposed airworthiness directive 
(AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -
900, and -900ER series airplanes. That NPRM proposed to require 
checking the escape slide girt for serviceability, and

[[Page 53156]]

replacement if necessary; modifying the cable routing provision; 
replacing the regulator padding; modifying the aspirator orientation; 
and modifying the valise. That NPRM also proposed to require, for 
certain airplanes, modifying or replacing the Vespel piston, modifying 
the pilot valve regulator, installing a new firing cable and safety 
pin, and modifying the slide valise. That NPRM was prompted by reports 
of escape slides failing to deploy from the forward and aft right-hand 
doors during scheduled maintenance slide deployments. This action 
revises that NPRM by adding airplanes to the applicability of that NPRM 
and specifying revised service information. We are proposing this 
supplemental NPRM to prevent failure of an escape slide to deploy, 
which could result in the slide being unusable during an emergency 
evacuation and increased likelihood of injury to passengers or 
crewmembers due to the difficulty in evacuating the airplane. Since 
these actions impose an additional burden over that proposed in the 
NPRM, we are reopening the comment period to allow the public the 
chance to comment on these proposed changes.

DATES: We must receive comments on this supplemental NPRM by October 
15, 2012.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, 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 proposed AD, contact 
Goodrich Corporation, Aircraft Interior Products, Attn: Technical 
Publications, 3414 South Fifth Street, Phoenix, Arizona 85040; phone: 
602-243-2270; Internet: https://www.goodrich.com/TechPubs. You may 
review copies of the referenced service information at the FAA, 
Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, 
Washington. For information on the availability of this material at the 
FAA, call 425-227-1221.

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 proposed AD, the regulatory 
evaluation, any comments received, and other information. The street 
address for the Docket Office (phone: 800-647-5527) is in the ADDRESSES 
section. Comments will be available in the AD docket shortly after 
receipt.

FOR FURTHER INFORMATION CONTACT: Sarah Piccola, Aerospace Engineer, 
Cabin Safety & Environmental Systems Branch, ANM-150S, Seattle Aircraft 
Certification Office (ACO), FAA, 1601 Lind Avenue SW., Renton, 
Washington 98057-3356; phone: 425-917-6483; fax: 425-917-6590; email: 
sarah.piccola@faa.gov.

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2011-1222; 
Directorate Identifier 2010-NM-268-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD 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 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    We issued an NPRM to amend 14 CFR part 39 to include an AD that 
would apply to The Boeing Company Model 737-600, -700, -700C, -800, -
900, and -900ER series airplanes. That NPRM published in the Federal 
Register on November 8, 2011 (76 FR 69159). That NPRM proposed to 
require checking the escape slide girt for serviceability and 
replacement if necessary, modifying the cable routing provision, the 
aspirator orientation, the valise, and replacing the regulator padding. 
That NPRM also proposed to require, for certain airplanes, modifying or 
replacing the Vespel piston, modifying the pilot valve regulator, 
modifying the slide valise, and installing a new firing cable and 
safety pin.

Actions Since Previous NPRM (76 FR 69159, November 8, 2011) Was Issued

    Since we issued the previous NPRM (76 FR 69159, November 8, 2011), 
new service information has been issued that provides clarifications 
and minor corrections, and adds data. Additionally, an error was 
discovered in the part numbers (P/Ns) specified in paragraph (c), 
``Applicability,'' of that NPRM. The specification of ``P/N 5A3307-1, -
3, -5, or -301, S/N BNG0001 through BNG5707 inclusive,'' is incorrect. 
The part number should have read ``P/N 5A3307-1, -3, -5, or -301, S/N 
BNG0001 through BNG14499 inclusive.'' We have changed the supplemental 
NPRM in this regard.

Comments

    We gave the public the opportunity to comment on the previous NPRM 
(76 FR 69159, November 8, 2011). The following presents the comments 
received on the NPRM and the FAA's response to each comment.

Requests To Use Revised Service Information

    Boeing, United Airlines (United), and Goodrich Corporation 
(Goodrich) requested that the previous NPRM (76 FR 69159, November 8, 
2011) be changed to incorporate revised service information to ensure 
that operators are incorporating the most current revision of the 
service information.
    We agree that current service information should be incorporated 
into this supplemental NPRM. Goodrich Service Bulletin 5A3307-25-389, 
Revision 2, dated May 4, 2012; and Goodrich Service Bulletin 5A3307-25-
339, Revision 5, dated May 4, 2012; provide minor corrections, updated 
pricing, and additional data. The technical content of these documents 
has not been changed. We have changed paragraphs (g) and (h)(1) of the 
supplemental NPRM to refer to Goodrich Service Bulletin 5A3307-25-389, 
Revision 2, dated May 4, 2012; and Goodrich Service Bulletin 5A3307-25-
339, Revision 5, dated May 4, 2012; as applicable. We have changed 
paragraph (i) of the supplemental NPRM to include credit for 
modifications of the escape slide done before the effective date of the 
AD using Goodrich Service Bulletin 5A3307-25-339, Revision 3, dated May 
8, 2009; or Revision 4, dated October 1, 2011. Modification of the 
escape slide specified in Goodrich Service Bulletin 5A3307-25-389, 
Revision 2, dated May 4, 2012, consists of modifying the cable routing 
provision, replacing the

[[Page 53157]]

regulator padding, modifying the aspirator orientation, and modifying 
the valise. Modification of the escape slide specified in Goodrich 
Service Bulletin 5A3307-25-339, Revision 5, dated May 4, 2012, consists 
of modifying the pilot valve regulator P/N 4A3865-2, -3, or -4, as 
applicable; installing a new firing cable and safety pin; and modifying 
the slide valise.

Requests To Change Applicability

    Goodrich, Boeing, United, AirTran Airways (AirTran), and Southwest 
Airlines (Southwest) requested that we change or clarify the 
applicability of the pervious NPRM (76 FR 69159, November 8, 2011) to 
include slide P/N 5A3307-1, -3, -5, or -301, S/Ns BNG0001 through 
BNG14499 inclusive. Boeing stated that this change ``will ensure that 
all applicable 5A3307 series evacuation slides have been identified for 
incorporation of the Goodrich Service Bulletin 5A3307-25-389 
modifications.''
    We agree that S/Ns BNG0001 through BNG14499 inclusive should be 
included in the applicability of this supplemental NPRM as explained 
previously. We have changed paragraph (c) of the supplemental NPRM to 
include P/N 5A3307-1, -3, -5, or -301, S/N BNG0001 through BNG14499 
inclusive.

Requests To Remove Slide Part Numbers From the NPRM (76 FR 69159, 
November 8, 2011)

    Goodrich, United, and Boeing requested that we remove slide P/N 
5A3086-1, -3, or -301, S/Ns B3F001 through B3F611 inclusive; P/N 
5A3088-1, -3, or -301, S/Ns B3A001 through B3A685 inclusive; from the 
NPRM (76 FR 69159, November 8, 2011). Goodrich stated that 
specification of slide P/N 5A3086-1, -3, or -301, S/Ns B3F001 through 
B3F611 inclusive; and P/N 5A3088-1, -3, or -301, S/Ns B3A001 through 
B3A685 inclusive; is inappropriate for the proposed AD, because the 
unsafe condition that the proposed AD addresses is not an issue for the 
P/Ns 5A3086 and 5A3088 series slides. Goodrich also stated that the 
design of the P/Ns 5A3086 and 5A3088 series slides precludes the type 
of event that has been experienced with the P/N 5A3307 series slides. 
Goodrich provided detailed information to support its request.
    We agree. Including these additional parts is confusing and is not 
directly related to the unsafe condition addressed by this supplemental 
NPRM. We have changed paragraph (c) of the supplemental NPRM to remove 
slide P/N 5A3086-1, -3, or -301, S/Ns B3F001 through B3F611 inclusive; 
and P/N 5A3088-1, -3, or -301, S/Ns B3A001 through B3A685 inclusive; 
from the supplemental NPRM.

Request To Remove Girt Check

    Goodrich requested that the girt check be removed from the previous 
NPRM (76 FR 69159, November 8, 2011). Goodrich stated that the girt 
condition was not a causative factor in the unsafe condition described 
in the previous NPRM. The girt condition check is not a configuration 
requirement of the slide modification, which addresses the slide 
nondeployment issue. Rather, the girt condition check is included in 
the Goodrich service information because it falls under the heading of 
good general maintenance practice. Goodrich stated that the girt check 
specified in the Goodrich service information was not a causative 
factor in the unsafe condition described by the previous NPRM and 
questions the need for it to be called out in the AD.
    We agree. The girt condition check is not a configuration 
requirement of the slide modification, which addresses the slide non-
deployment issue. We have removed the girt condition check from 
paragraph (g) of the supplemental NPRM.

Requests To Remove Parts Installation Restriction

    United, American, WestJet, Southwest, Goodrich, and AirTran 
requested that we remove paragraph (j) of the NPRM (76 FR 69159, 
November 8, 2011), which prohibits installing certain parts on any 
airplane after the effective date of the AD. The commenters stated that 
this prohibition would prevent the use of affected spare slide 
assemblies (un-modified) during modification of the slide units of the 
previous NPRM, as well as the removal and reinstallation of the same 
affected unit on an airplane. The commenters asserted that this 
requirement could restrict an airline's ability to return an airplane 
to service due to a shortage of parts.
    Boeing requested that we remove paragraphs (j)(1) and (j)(3) from 
the previous NPRM (76 FR 69159, November 8, 2011). The P/N 5A3086-1, -
3, and -301 evacuation slides; and P/N 5A3088-1, -3, and -301 
evacuation slides are not affected by Goodrich Service Bulletin 5A3307-
25-389, Revision 1, dated October 1, 2011, which is the subject of the 
previous NPRM. Boeing stated that, once the evacuation slide has been 
modified as specified in Goodrich Service Bulletin 5A3307-25-389, 
Revision 1, dated October 1, 2011, into the new P/N 5A3307-7 
configuration, the old regulator and regulator valve padding parts will 
have been replaced with new parts; therefore, just listing P/N 5A3307-
1, -3, -5, and -301 evacuation slides would cover the old regulator and 
regulator valve padding parts.
    We agree with removing the parts installation restriction, since 
this prohibition could make it difficult for operators to maintain 
their airplanes. After the effective date of the AD, if the slides are 
removed for any reason, this prohibition could lead to an airplane with 
slides having mixed part numbers. We have removed paragraph (j) from 
the supplemental NPRM, and redesiginated subsequent paragraphs 
accordingly.

Request To Remove Repeated Wording

    United requested that we address the need for repeating 
accomplishment instructions within paragraphs (g) and (h) of the 
previous NPRM (76 FR 69159, November 8, 2011). United stated that this 
information is already contained within Goodrich Service Bulletins 
5A3307-25-389, Revision 1, dated October 1, 2011; and 5A3307-25-339, 
Revision 4, dated October 1, 2011; respectively, and by repeating this 
information, the AD could contain dated information.
    We agree that repeating the specifics of the accomplishment 
instructions in paragraphs (g) and (h) of the supplemental NPRM is 
unnecessary in this case. We have changed paragraphs (g) and (h) of the 
supplemental NPRM to require modifying the escape slide in accordance 
with the applicable service information. We have described the 
specifics of modifying the escape slide in paragraphs (g) and (h) of 
the supplemental NPRM in the previous response under comment ``Request 
to Use Revised Service Information.'' No further change is necessary in 
this regard.

Request To Remove Certain Part Numbers

    United requested that we address repetitive slide part numbers in 
the previous NPRM (76 FR 69159, November 8, 2011), which have already 
been subjected to previous AD rulemaking. United stated that including 
slide part numbers that were subjected to previously issued rulemaking, 
such as AD 2008-24-08, Amendment 39-15748 (73 FR 72320, November 28, 
2008), undermines the rulemaking process and forces operators to 
demonstrate compliance against certain part numbers for a second time.
    We agree and have removed P/Ns 5A3307-1 and 5A3307-3, which were 
the subject of previous rulemaking (AD 2008-24-08, Amendment 39-15748 
(73

[[Page 53158]]

FR 72320, November 28, 2008)), from this supplemental NPRM.

FAA's Determination

    We are proposing this supplemental NPRM because we evaluated all 
the relevant information and determined the unsafe condition described 
previously is likely to exist or develop in other products of the same 
type design. Certain changes described above expand the scope of the 
original NPRM. As a result, we have determined that it is necessary to 
reopen the comment period to provide additional opportunity for the 
public to comment on this supplemental NPRM.

Proposed Requirements of the Supplemental NPRM

    This supplemental NPRM would require accomplishing the actions 
specified in the service information described previously.

Costs of Compliance

    We estimate that this proposed AD affects 557 airplanes of U.S. 
registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                  Cost on U.S.
             Action                    Labor cost            Parts cost      Cost per product      operators
----------------------------------------------------------------------------------------------------------------
Modify girt and valise, and      2 work-hours x $85 per  $223.............  $393.............  $218,901.
 replace padding.                 hour = $170.
Modify regulator valve, install  1 work-hour x $85 per   Between $1,749     Between $1,834     Between
 cable and pin, and modify        hour = $85.             and $1,836.        and $1,921.        $1,021,538 and
 slide valise.                                                                                  $1,069,997.
Modify Vespel piston...........  1 work-hour x $85 per   $0...............  $85..............  $47,345.
                                  hour = $85.
Optional Vespel piston           Up to 1 work-hour x     Up to $612.......  Up to $697.......  Up to $388,229.
 replacement.                     $85 per hour = $85.
----------------------------------------------------------------------------------------------------------------

    We estimate the following costs to do any necessary replacements 
that would be required based on the results of the check of the girt. 
We have no way of determining the number of aircraft that might need 
these replacements.

                                               On-Condition Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                     Cost per
                  Action                                Labor cost                 Parts cost        product
----------------------------------------------------------------------------------------------------------------
Girt replacement (Goodrich Service          1 work-hour x $85 per hour = $85..            $942           $1,027
 Bulletin 5A3307-25-389, Revision 2, dated
 May 4, 2012).
----------------------------------------------------------------------------------------------------------------

    According to the parts supplier, some of the costs of this proposed 
AD may be covered under warranty, thereby reducing the cost impact on 
affected individuals. We do not control warranty coverage for affected 
individuals. As a result, we have included all costs in our cost 
estimate.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. ``Subtitle VII: Aviation Programs'' 
describes in more detail the scope of the Agency's authority.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would not 
have a substantial direct effect on the States, on the relationship 
between the national Government and the States, or on the distribution 
of power and responsibilities among the various levels of government.
    For the reasons discussed above, I certify this proposed 
regulation:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under the DOT Regulatory Policies 
and Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska, and
    (4) 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.

List of Subjects in 14 CFR Part 39

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

The Proposed Amendment

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

PART 39--AIRWORTHINESS DIRECTIVES

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

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


Sec.  39.13  [Amended]

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

The Boeing Company: Docket No. FAA-2011-1222; Directorate Identifier 
2010-NM-268-AD.

(a) Comments Due Date

    We must receive comments by October 15, 2012.

[[Page 53159]]

(b) Affected ADs

    This AD affects AD 2008-24-08, Amendment 39-15748 (73 FR 72320, 
November 28, 2008).

(c) Applicability

    This AD applies to The Boeing Company Model 737-600, -700, -
700C, -800, -900, and -900ER series airplanes; certificated in any 
category; with Goodrich Corporation door escape slide part number 
(P/N) 5A3307-1, -3, -5, or -301, serial number (S/N) BNG0001 through 
BNG14499 inclusive.

(d) Subject

    Joint Aircraft System Component (JASC)/Air Transport Association 
(ATA) of America Code 25, Equipment/Furnishings.

(e) Unsafe Condition

    This AD was prompted by reports of escape slides failing to 
deploy from the forward and aft right-hand doors during scheduled 
maintenance slide deployments. We are issuing this AD to prevent 
failure of an escape slide to deploy, which could result in the 
slide being unusable during an emergency evacuation and increased 
likelihood of injury to passengers or crewmembers due to the 
difficulty in evacuating the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Slide Modification

    Within 36 months after the effective date of this AD: Modify the 
escape slide in accordance with the Accomplishment Instructions of 
Goodrich Service Bulletin 5A3307-25-389, Revision 2, dated May 4, 
2012.

(h) Concurrent Requirements

    (1) For slide P/N 5A3307-301: Prior to or concurrently with 
accomplishing the actions required by paragraph (g) of this AD, 
modify the escape slide in accordance with the Accomplishment 
Instructions of Goodrich Service Bulletin 5A3307-25-339, Revision 5, 
dated May 4, 2012.
    (2) For slide P/N 5A3307-301 or 5A3307-5: Prior to or 
concurrently with accomplishing the actions required by paragraph 
(g) of this AD, modify the Vespel piston in the regulator valves, or 
replace the Vespel piston with a new or serviceable Vespel piston P/
N 3A3566-2 or 3A3832-2, as applicable, in accordance with the 
Accomplishment Instructions of Goodrich Service Bulletin 25-349, 
Revision 1, dated January 11, 2010.

(i) Credit for Previous Actions

    (1) This paragraph provides credit for the actions required by 
paragraph (h)(1) of this AD, if those actions were performed before 
the effective date of this AD using Goodrich Service Bulletin 
5A3307-25-339, Revision 1, dated September 26, 2003; Revision 2, 
dated March 31, 2004; Revision 3, dated May 8, 2009; or Revision 4, 
dated October 1, 2011; which are not incorporated by reference in 
this AD.
    (2) This paragraph provides credit for the modification or 
replacement of the Vespel piston in the regulator valves required by 
paragraph (h)(2) of this AD, if those actions were performed before 
the effective date of this AD using Goodrich Service Bulletin 25-
349, dated September 15, 2004, which is not incorporated by 
reference in this AD.

(j) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Seattle Aircraft Certification Office (ACO), 
FAA, has the authority to approve AMOCs for this AD, if requested 
using the procedures found in 14 CFR 39.19. In accordance with 14 
CFR 39.19, send your request to your principal inspector or local 
Flight Standards District Office, as appropriate. If sending 
information directly to the manager of the ACO, send it to the 
attention of the person identified in the Related Information 
section of this AD. Information may be emailed to: 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.

(k) Related Information

    (1) For more information about this AD, contact Sarah Piccola, 
Aerospace Engineer, Cabin Safety & Environmental Systems Branch, 
ANM-150S, Seattle Aircraft Certification Office (ACO), FAA, 1601 
Lind Avenue SW., Renton, Washington 98057-3356; phone: 425-917-6483; 
fax: 425-917-6590; email: sarah.piccola@faa.gov.
    (2) For service information identified in this AD, contact 
Goodrich Corporation, Aircraft Interior Products, ATTN: Technical 
Publications, 3414 South Fifth Street, Phoenix, Arizona 85040; 
phone: 602-243-2270; Internet: https://www.goodrich.com/TechPubs. You 
may review copies of the referenced service information at the FAA, 
Transport Airplane Directorate, the FAA, 1601 Lind Avenue SW., 
Renton, Washington. For information on the availability of this 
material at the FAA, call 425-227-1221.

    Issued in Renton, Washington, on August 24, 2012.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2012-21556 Filed 8-30-12; 8:45 am]
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