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Federal Register/Vol. 83, No. 94/Tuesday, May 15, 2018 22420 Federal Register / Vol. 83, No. 94 / Tuesday, May 15, 2018 / Proposed Rules MC 110–SK57, Seal Beach, CA 90740–5600; • Federal eRulemaking Portal: Go to date and may amend this NPRM telephone 562–797–1717; internet https:// http://www.regulations.gov. Follow the because of those comments. www.myboeingfleet.com. You may view this instructions for submitting comments. We will post all comments we service information at the FAA, Transport • Fax: 202–493–2251. receive, without change, to http:// Standards Branch, 2200 South 216th St., Des • www.regulations.gov, including any Moines, WA. For information on the Mail: U.S. Department of availability of this material at the FAA, call Transportation, Docket Operations, M– personal information you provide. We 206–231–3195. 30, West Building Ground Floor, Room will also post a report summarizing each W12–140, 1200 New Jersey Avenue SE, substantive verbal contact we receive Issued in Des Moines, Washington, on May about this proposed AD. 7, 2018. Washington, DC 20590. • Hand Delivery: Deliver to Mail Michael Kaszycki, Discussion address above between 9 a.m. and 5 Acting Director, System Oversight Division, p.m., Monday through Friday, except We issued AD 2017–16–05, Aircraft Certification Service. Federal holidays. Amendment 39–18982 (82 FR 39344, [FR Doc. 2018–10209 Filed 5–14–18; 8:45 am] For service information identified in August 18, 2017) (‘‘AD 2017–16–05’’), BILLING CODE 4910–13–P this NPRM, contact Boeing Commercial for certain The Boeing Company Model Airplanes, Attention: Contractual & Data 737–600, –700, –700C, –800, –900, and Services (C&DS), 2600 Westminster –900ER series airplanes. AD 2017–16– DEPARTMENT OF TRANSPORTATION Blvd., MC 110–SK57, Seal Beach, CA 05 requires a one-time detailed visual inspection for discrepancies in the Federal Aviation Administration 90740–5600; telephone: 562–797–1717; internet: https://www.myboeingfleet. Krueger flap bullnose attachment hardware, and related investigative and 14 CFR Part 39 com. You may view this service information at the FAA, Transport corrective actions, if necessary. AD [Docket No. FAA–2018–0409; Product Standards Branch, 2200 South 216th St., 2017–16–05 resulted from a report of a Identifier 2017–NM–120–AD] Des Moines, WA. For information on the Krueger flap bullnose departing an availability of this material at the FAA, airplane during taxi, which caused RIN 2120–AA64 call 206–231–3195. It is also available damage to the wing structure and thrust reverser. We issued AD 2017–16–05 to Airworthiness Directives; The Boeing on the internet at http:// detect and correct missing Krueger flap Company Airplanes www.regulations.gov by searching for and locating Docket No. FAA–2018– bullnose hardware. Such missing AGENCY: Federal Aviation 0409. hardware could result in the Krueger Administration (FAA), DOT. flap bullnose departing the airplane Examining the AD Docket ACTION: Notice of proposed rulemaking during flight, which could damage (NPRM). You may examine the AD docket on empennage structure and lead to the the internet at http:// inability to maintain continued safe SUMMARY: We propose to supersede www.regulations.gov by searching for flight and landing. Airworthiness Directive (AD) 2017–16– and locating Docket No. FAA–2018– Actions Since AD 2017–16–05 Was 05, which applies to certain The Boeing 0409; or in person at Docket Operations Issued Company Model 737–600, –700, –700C, between 9 a.m. and 5 p.m., Monday –800, –900, and –900ER series through Friday, except Federal holidays. Since we issued AD 2017–16–05, we airplanes. AD 2017–16–05 requires a The AD docket contains this NPRM, the have received a report of a missing no. one-time detailed visual inspection for regulatory evaluation, any comments 2 Krueger flap bullnose hinge bolt from discrepancies in the Krueger flap received, and other information. The an airplane that was not included in the bullnose attachment hardware, and street address for Docket Operations applicability of AD 2017–16–05. related investigative and corrective (phone: 800–647–5527) is in the Related Service Information Under 1 actions if necessary. Since we issued AD ADDRESSES section. Comments will be CFR Part 51 2017–16–05, we received a report of a available in the AD docket shortly after We reviewed Boeing Alert Service missing no. 2 Krueger flap bullnose receipt. hinge bolt from an airplane that was not Bulletin 737–57A1327, Revision 2, FOR FURTHER INFORMATION CONTACT: dated July 25, 2017 (‘‘BASB 737– included in the applicability of AD Alan Pohl, Aerospace Engineer, 2017–16–05. This proposed AD would 57A1327, R2’’). This service information Airframe Section, FAA, Seattle ACO describes procedures for a one-time add airplanes and an additional Branch, 2200 South 216th St., Des inspection to determine if any Krueger detailed visual inspection for Moines, WA 98198; phone and fax: 206– discrepancies in the Krueger flap flap no. 1, 2, 3, or 4 has been replaced, 231–3527; email: [email protected]. and related investigative and corrective bullnose attachment hardware, and SUPPLEMENTARY INFORMATION: actions. Since this is a rotable parts related investigative and corrective issue, the applicability of this AD has Comments Invited actions; and an inspection to determine if any Krueger flap no. 1, 2, 3, or 4 has been expanded beyond the airplanes We invite you to send any written listed in the related service bulletin to been replaced, and related investigative relevant data, views, or arguments about and corrective actions. include all airplanes on which a this proposal. Send your comments to Krueger flap bullnose may be installed. This service information is reasonably an address listed under the ADDRESSES available because the interested parties We are proposing this AD to address the section. Include ‘‘Docket No. FAA– unsafe condition on these products. have access to it through their normal 2018–0409; Product Identifier 2017– course of business or by the means DATES: We must receive comments on NM–120–AD’’ at the beginning of your identified in the ADDRESSES section. this proposed AD by June 29, 2018. comments. We specifically invite ADDRESSES: You may send comments, comments on the overall regulatory, FAA’s Determination using the procedures found in 14 CFR economic, environmental, and energy We are proposing this AD because we 11.43 and 11.45, by any of the following aspects of this NPRM. We will consider evaluated all the relevant information methods: all comments received by the closing and determined the unsafe condition VerDate Sep<11>2014 16:36 May 14, 2018 Jkt 244001 PO 00000 Frm 00008 Fmt 4702 Sfmt 4702 E:\FR\FM\15MYP1.SGM 15MYP1 daltland on DSKBBV9HB2PROD with PROPOSALS Federal Register / Vol. 83, No. 94 / Tuesday, May 15, 2018 / Proposed Rules 22421 described previously is likely to exist or would also require accomplishment of determined that these parts could later develop in other products of the same the actions identified as ‘‘RC’’ (required be installed on airplanes that were type design. for compliance) in the Accomplishment initially delivered with acceptable parts, Instructions of BASB 737–57A1327, R2, thereby subjecting those airplanes to the Proposed AD Requirements described previously, except as unsafe condition. Therefore, while the Although this proposed AD does not discussed under ‘‘Differences Between effectivity of BASB 737–57A1327, R2 is explicitly restate the requirements of AD this Proposed AD and the Service limited to line numbers 1 through 6465 2017–16–05, this proposed AD would Information.’’ inclusive, the applicability of this retain certain requirements of AD 2017– For information on the procedures proposed AD includes all The Boeing 16–05. Those requirements are and compliance times, see this service Company Model 737–600, –700, –700C, referenced in the service information information at http:// –800, –900, and –900ER series identified previously, which, in turn, is www.regulations.gov by searching for airplanes. This difference has been referenced in paragraph (g) of this and locating Docket No. FAA–2018– coordinated with Boeing. proposed AD. This proposed AD would 0409. add airplanes and an additional Costs of Compliance inspection to determine if any Krueger Differences Between This Proposed AD We estimate that this proposed AD flap no. 1, 2, 3, or 4 has been replaced, and the Service Information affects 1,814 airplanes of U.S. registry. and applicable related investigative and Because the affected parts identified We estimate the following costs to corrective actions. This proposed AD in this NPRM are rotable parts, we have comply with this proposed AD: ESTIMATED COSTS Cost per Cost on U.S. Action Labor cost Parts cost product operators Inspection of the Krueger flap bullnose hardware (1,495 air- 3 work-hours × $85 per hour $0 $255 $381,225 planes) (retained actions from AD 2017–16–05). = $255. Inspection to determine if any Krueger flap no. 1, 2, 3, or 4 3 work-hours × $85 per hour 0 255 462,570 has been replaced (1,814 airplanes) (new proposed ac- = $255. tion). We have received no definitive data This proposed AD is issued in on a substantial number of small entities that would enable us to provide cost accordance with authority delegated by under the criteria of the Regulatory estimates for the on-condition actions the Executive Director, Aircraft Flexibility Act. specified in this proposed AD. Certification Service, as authorized by According to the manufacturer, some FAA Order 8000.51C. In accordance List of Subjects in 14 CFR Part 39 of the costs of this proposed AD may be with that order, issuance of ADs is Air transportation, Aircraft, Aviation normally a function of the Compliance covered under warranty, thereby safety, Incorporation by reference, and Airworthiness Division, but during reducing the cost impact on affected Safety. individuals. We do not control warranty this transition period, the Executive coverage for affected individuals.
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