81 FR 93585 - Airworthiness Directives; The Boeing Company Airplanes
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 81, Issue 245 (December 21, 2016)
Federal Aviation Administration
Federal Register Volume 81, Issue 245 (December 21, 2016)
| Page Range | 93585-93589 | |
| FR Document | 2016-29307 |
[Federal Register Volume 81, Number 245 (Wednesday, December 21, 2016)] [Rules and Regulations] [Pages 93585-93589] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2016-29307] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2015-5816; Directorate Identifier 2015-NM-029-AD; Amendment 39-18731; AD 2016-25-05] RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. ----------------------------------------------------------------------- SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747- 200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP series airplanes. This AD was prompted by reports of cracking found in the splice plates, hinge fittings, terminal fittings, the upper skin of the outboard [[Page 93586]] and center sections, upper chord, and rear spar webs before reaching the inspection interval specified in AD 2006-10-16. Cracked and fractured Maraging steel fasteners were also found. This AD requires repetitive inspections for cracking, an inspection to determine whether fasteners are magnetic, repetitive ultrasonic inspections for cracking and fractures of affected fasteners, and related investigative and corrective actions if necessary. We are issuing this AD to address the unsafe condition on these products. DATES: This AD is effective January 25, 2017. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of January 25, 2017. ADDRESSES: For service information identified in this final rule, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone: 206-544-5000, extension 1; fax: 206-766-5680; Internet https://www.myboeingfleet.com. You may view this referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425-227-1221. It is also available on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2015- 5816. Examining the AD Docket You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2015- 5816; 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 address for the Docket Office (phone: 800-647- 5527) is Docket Management Facility, U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Nathan Weigand, Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917- 6428; fax: 425-917-6590; email: [email protected]. SUPPLEMENTARY INFORMATION: Discussion We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2006-10-16, Amendment 39-14600 (71 FR 28570, May 17, 2006) (``AD 2006-10-16''). AD 2006-10-16 applies to all The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747- 200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP series airplanes. The NPRM published in the Federal Register on November 27, 2015 (80 FR 74052) (``the NPRM''). The NPRM was prompted by reports of cracking found in the splice plates, hinge fittings, terminal fittings, the upper skin of the outboard and center sections, upper chord, and rear spar webs before reaching the inspection interval specified in AD 2006-10-16. Cracked and fractured Maraging steel fasteners were also found. The NPRM proposed to reduce the compliance time for certain inspections and add repetitive inspections for cracking of the splice plates, hinge fittings, terminal fittings, upper skin of the outboard and center sections, and rear spar webs in Zone B. The NPRM also proposed to require an inspection to determine whether fasteners are magnetic in Zone C, repetitive ultrasonic inspections for cracking and fractures of affected fasteners, and related investigative and corrective actions if necessary. The NPRM also added an optional modification, which would terminate certain repetitive inspections, provided post-modification inspections and corrective action are done if necessary. We are issuing this AD to detect and correct this cracking, which could lead to reduced structural capability of the outboard and center sections of the horizontal stabilizer and could result in loss of control of the airplane. Comments We gave the public the opportunity to participate in developing this AD. The following presents the comments received on the NPRM and the FAA's response to each comment. Request To Clarify Inspections Atlas Airlines, United Airlines, and The Boeing Company requested that we clarify the inspection required by the proposed AD. Atlas Airlines stated that the ``Proposed AD Requirements'' paragraph of the NPRM states that the proposed AD would retain all the requirements of AD 2006-10-16. Atlas Airlines also stated that paragraph (f) of AD 2006-10-16 is not included in the proposed AD and noted that paragraph (g)(3) of the proposed AD identifies only Groups 7 through 9 as the applicable groups for the Zone A inspections. Atlas Airlines asked for clarification of the Zone A inspections. Boeing noted that AD 2006-10-16 includes Zone C inspections as specified in Part 5 of Boeing Service Bulletin 747-55A2050, Revision 1, dated May 1, 2003, and included Zone A inspections for Groups 1 through 6. Boeing noted that these inspections have not been removed by Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. Boeing also requested that we revise the proposed AD to address the Zone C inspections in Part 5 of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, and the Zone A inspections for Groups 1 through 6. United Airlines disagreed with not restating the requirements of AD 2006-10-16. United Airlines stated that operators might miss that Zone A inspections and Zone C, Part 5, inspections required by AD 2006-10-16 are intended to be mandated. United Airlines noted that although the preamble of the NPRM stated that all inspections of AD 2006-10-16 are retained, paragraph (g) of the proposed AD only specifies new requirements and does not include certain Zone A inspections and Zone C, Part 5, inspections. We agree that clarification is necessary. As stated in the preamble to the NPRM, we intended to retain all requirements of AD 2006-10-16. However, the actions specified in the proposed AD do not include the inspections referred to by the commenters. We have determined that instead of including those actions in this final rule, we will issue this action as a stand-alone AD. Thus, AD 2006-10-16 is not superseded, making it clear that all actions in AD 2006-10-16 continue to be required. In addition, we have revised this AD to specify when accomplishing certain actions in this AD terminates actions specified in AD 2006-10-16. We have made the following changes:Revised paragraph (g)(1) of this AD to specify that accomplishing a Zone B inspection required by paragraph (g)(1) of this AD terminates the inspections required by paragraph (g) of AD 2006-10- 16 for the inspected area only. Revised paragraph (g)(2) of this AD to specify that accomplishing a Zone B inspection required by paragraph (g)(2) of this AD terminates the inspections required by paragraph (i) of AD 2006-10- 16 for the inspected area only. Revised paragraph (g)(3) of this AD to specify that accomplishing Zone A and Zone B inspections required by [[Page 93587]] paragraph (g)(3) of this AD terminates the inspections required by paragraphs (f), (i), and (l) of AD 2006-10-16 for the inspected area only. Added paragraph (i)(1)(iii) to this AD to clarify that accomplishing the actions specified in paragraph (i)(1) of this AD terminates inspections required by paragraph (g) of AD 2006-10-16 for Zone B, as specified in Part 3 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, for the modified area only. Added paragraph (i)(1)(iv) to this AD to clarify that accomplishing the actions specified in paragraph (i) of this AD terminates inspections required by paragraph (k) of AD 2006-10-16 for Zone C, as specified in Part 5 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, for the modified area only. Added paragraph (i)(2)(ii) of this AD to clarify that accomplishing the actions specified in paragraph (i)(2) of this AD terminates the repetitive inspections required by paragraph (k) of AD 2006-10-16 for Zone C, as specified in Part 5 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, for the inspected area only. Added paragraph (i)(3)(ii) of this AD to clarify that accomplishing the actions specified in paragraph (i)(3) of this AD terminates the repetitive inspections required by paragraph (i) of AD 2006-10-16 for Zone B, as specified in Part 4 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, for the modified area only. Request To Update Terminating Action Language for Zone C Inspections Boeing requested that we revise paragraph (i)(2) of the proposed AD to clarify which Zone C inspections are terminated. Boeing noted that paragraph (i)(2) of the proposed AD specifies that the actions terminate Zone C inspections specified in Part 6 of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, and noted that Zone C inspections in Part 5 of Boeing Service Bulletin 747- 55A2050, Revision 2, dated January 23, 2015, are also terminated. We agree to clarify the terminating action for the Zone C inspections, and have revised paragraph (i)(2) of this AD accordingly. Conclusion We reviewed the relevant data, considered the comments received, and determined that air safety and the public interest require adopting this AD with the change described previously and minor editorial changes. We have determined that these minor changes: Are consistent with the intent that was proposed in the NPRM for correcting the unsafe condition; and Do not add any additional burden upon the public than was already proposed in the NPRM. We also determined that these changes will not increase the economic burden on any operator or increase the scope of this AD. Related Service Information Under 1 CFR Part 51 We reviewed Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. The service information describes procedures for accomplishing Zone A, Zone B, and Zone C inspections for cracking of the upper skin and upper rear spar chord of the outboard and center sections of the horizontal stabilizer, and related investigative and corrective actions if necessary. The service information also describes procedures for a magnetic inspection to determine the type of fasteners, ultrasonic inspections for cracking and fractures of affected fasteners, and related investigative and corrective actions if necessary. This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. Costs of Compliance We estimate that this AD affects 116 airplanes of U.S. registry. We estimate the following costs to comply with this AD: Estimated Costs--Required Actions ---------------------------------------------------------------------------------------------------------------- Cost on U.S. Action Labor cost Parts cost Cost per product operators ---------------------------------------------------------------------------------------------------------------- Zone A Inspections (required by 8 work-hours x $85 per $0 $680.............. Up to $78,880. AD 2006-10-16). hour = $680. Zone B Open-hole nondestructive 30 work-hours x $85 per 0 2,550............. Up to $295,800. testing (NDT) Inspection hour = $2,550. (required by AD 2006-10-16 for Groups 3, 4, and 5 airplanes; and for Groups 1, 2, and 3 airplanes, if done). Zone C Maraging or H-11 Steel 8 work-hours x $85 per 0 680............... Up to $78,880. Fastener Inspection (required hour = $680. by AD 2006-10-16 for Groups 1, 2, and 3 airplanes). New Zone B Inspections......... 248 work-hours x $85 0 21,080............ $2,445,280. per hour = $21,080. New Zone C Inspection.......... 26 work-hours x $85 per 0 2,210............. $256,360. hour = $2,210. ---------------------------------------------------------------------------------------------------------------- Estimated Costs--Optional Actions ---------------------------------------------------------------------------------------------------------------- Action Labor cost Parts cost Cost per product ---------------------------------------------------------------------------------------------------------------- Open-hole NDT Inspections (high Up to 298 work-hours x $85 per $0................... Up to $25,330. frequency eddy current hour = up to $25,330. inspections). Zone B Modification............... Up to 313 work-hours x $85 per Up to $3,486......... Up to $30,091. hour = up to $26,605. Post-Modification Inspections..... Up to 298 work-hours x $85 per $0................... Up to $25,330. hour = up to $25,330. ---------------------------------------------------------------------------------------------------------------- [[Page 93588]] We have received no definitive data that would enable us to provide a cost estimate for the on-condition actions specified in 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), (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. 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 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 airworthiness directive (AD): 2016-25-05 The Boeing Company: Amendment 39-18731; Docket No. FAA- 2015-5816; Directorate Identifier 2015-NM-029-AD. (a) Effective Date This AD is effective January 25, 2017. (b) Affected ADs This AD affects AD 2006-10-16, Amendment 39-14600 (71 FR 28570, May 17, 2006) (``AD 2006-10-16''). (c) Applicability This AD applies to all The Boeing Company Model 747-100, 747- 100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP series airplanes; certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 55, Stabilizers. (e) Unsafe Condition This AD was prompted by reports of cracking found in the splice plates, hinge fittings, terminal fittings, the upper skin of the outboard and center sections, upper chord, and rear spar webs before reaching the inspection interval specified in AD 2006-10-16. Cracked and fractured Maraging steel fasteners were also found. We are issuing this AD to detect and correct this cracking, which could lead to reduced structural capability of the outboard and center sections of the horizontal stabilizer and could result in loss of control of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Repetitive Inspections/Investigative and Corrective Actions At the applicable time specified in paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, except as required by paragraphs (h)(1) and (h)(2) of this AD: Do the applicable actions specified in paragraphs (g)(1), (g)(2), (g)(3), and (g)(4) of this AD, and all applicable related investigative and corrective actions, in accordance with the applicable part of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, except as required by paragraph (h)(3) of this AD. Do all applicable related investigative and corrective actions before further flight. Repeat the applicable inspections specified in paragraphs (g)(1), (g)(2), (g)(3), and (g)(4) of this AD at the applicable times specified in paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 747- 55A2050, Revision 2, dated January 23, 2015. (1) For Group 1 through 3 airplanes identified in Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015: Do non- destructive test (NDT) inspections (ultrasonic, high frequency eddy current, and low frequency eddy current inspections) or open-hole NDT inspections (high frequency eddy current inspections) of Zone B for cracking, in accordance with Part 3 or Part 4 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, as applicable. Accomplishing a Zone B inspection required by this paragraph terminates the inspections required by paragraph (g) of AD 2006-10-16 for the inspected area only. (2) For Group 4 through 6 airplanes identified in Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015: Do open- hole NDT inspections (high frequency eddy current inspections) of Zone B for cracking, in accordance with Part 4 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. Accomplishing a Zone B inspection required by this paragraph terminates the inspections required by paragraph (i) of AD 2006-10-16 for the inspected area only. (3) For Group 7 through 9 airplanes identified in Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015: Do inspections of Zone A (detailed or high frequency eddy current inspections) and Zone B (open-hole high frequency eddy current inspections) for cracking, in accordance with Part 1, Part 2, or Part 4 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, as applicable. Accomplishing Zone A and Zone B inspections required by this paragraph terminates the inspections required by paragraphs (f), (i), and (l) of AD 2006-10-16 for the inspected area only. (4) For Group 1 through 3 airplanes identified in Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015: Do an inspection of Zone C Maraging or H-11 steel fasteners to determine whether fasteners are magnetic, in accordance with Part 6 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. (h) Exceptions to Service Bulletin Specifications (1) Where Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, specifies a compliance time ``after the Revision 2 date of this service bulletin,'' this AD requires compliance within the specified compliance time after the effective date of this AD. (2) The Condition column of Table 1 of paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, refers to airplanes with certain total flight cycles and total flight hours. This AD, however, applies to the [[Page 93589]] airplanes with the specified total flight cycles and total flight hours as of the effective date of this AD. (3) Where Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, specifies to contact Boeing for repair instructions: Before further flight, repair using a method approved in accordance with the procedures specified in paragraph (l) of this AD. (i) Optional Terminating Action (1) For Group 1 through 3 airplanes identified in Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015: Accomplishing the Zone B modification, including all applicable related investigative and corrective actions, specified in Part 7 of the Accomplishment Instructions of Boeing Service Bulletin 747- 55A2050, Revision 2, dated January 23, 2015, except as required by paragraph (h)(3) of this AD, terminates the repetitive inspections specified in paragraphs (i)(1)(i) through (i)(1)(iv) of this AD for the modified area only. (i) Inspections required by paragraph (g)(1) of this AD for Zone B, as specified in Part 3 and Part 4 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. (ii) Inspections required by paragraph (g)(4) of this AD for Zone C, as specified in Part 6 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. (iii) Inspections required by paragraph (g) of AD 2006-10-16 for Zone B, as specified in Part 3 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. (iv) Inspections required by paragraph (k) of AD 2006-10-16 for Zone C, as specified in Part 5 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. (2) For Group 1 through 3 airplanes identified in Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015: Accomplishing the Zone B open-hole NDT inspection, repairing any cracking as applicable, and replacing fasteners as specified in Part 4 of the Accomplishment Instructions of Boeing Service Bulletin 747- 55A2050, Revision 2, dated January 23, 2015, terminates the actions specified in paragraphs (i)(2)(i) and (i)(2)(ii) of this AD for the inspected area only. (i) The inspections required by paragraph (g)(4) of this AD for Zone C, as specified in Part 6 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. (ii) The repetitive inspections required by paragraph (k) of AD 2006-10-16 for Zone C, as specified in Part 5 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. (3) For Group 4 through 9 airplanes identified in Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015: Accomplishing the Zone B modification, including all applicable related investigative and corrective actions, specified in Part 7 of the Accomplishment Instructions of Boeing Service Bulletin 747- 55A2050, Revision 2, dated January 23, 2015, except as required by paragraph (h)(3) of this AD, terminates the actions specified in paragraphs (i)(3)(i) and (i)(3)(ii) of this AD for the modified area only. (i) The repetitive inspections required by paragraph (g)(2) or (g)(3) of this AD, as applicable, only for Zone B, as specified in Part 4 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. (ii) The repetitive inspections required by paragraph (i) of AD 2006-10-16 for Zone B, as specified in Part 4 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. (j) Repetitive Post-Modification Inspections and Corrective Actions At the applicable time specified in paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015: Do the applicable inspections specified in paragraphs (j)(1) and (j)(2) of this AD, and all applicable corrective actions, in accordance with Part 8 of the Accomplishment Instructions of Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, except as required by paragraph (h)(3) of this AD. Do all applicable corrective actions before further flight. Repeat the applicable inspections at the applicable times specified in paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 747- 55A2050, Revision 2, dated January 23, 2015. (1) For Group 1 through 3 airplanes identified in Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, on which the Zone B modification specified in paragraph (i)(1) of this AD is done: Do non-destructive test (NDT) inspections (ultrasonic, high frequency eddy current, and low frequency eddy current inspections) or open-hole NDT inspections (high frequency eddy current inspections) of Zone B for cracking. (2) For Group 4 through 9 airplanes identified in Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, on which the Zone B modification specified in paragraph (i)(3) of this AD is done: Do open-hole NDT inspections (high frequency eddy current inspections) of Zone B for cracking. (k) Parts Installation Prohibition As of the effective date of this AD, no person may install any Maraging or H-11 steel fasteners in the locations specified in this AD. Where Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015, specifies to install H-11 bolts (kept fasteners), this AD requires installation of Inconel bolts. (l) 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 paragraph (m) of this AD. Information may be emailed to: [email protected]. (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. (3) An AMOC that provides an acceptable level of safety may be used for any repair required by this AD if it is approved by the Boeing Commercial Airplanes Organization Designation Authorization (ODA) that has been authorized by the Manager, Seattle ACO, to make those findings. For a repair method to be approved, the repair must meet the certification basis of the airplane, and the approval must specifically refer to this AD. (4) AMOCs approved for AD 2006-10-16, are approved as AMOCs for the corresponding provisions of paragraph (g) of this AD, except for approved AMOCs that allow installation of Maraging or H-11 steel fasteners. (m) Related Information For more information about this AD, contact Nathan Weigand, Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle ACO, 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-6428; fax: 425-917-6590; email: [email protected]. (n) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Boeing Service Bulletin 747-55A2050, Revision 2, dated January 23, 2015. (ii) Reserved. (3) For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone: 206-544- 5000, extension 1; fax: 206-766-5680; Internet https://www.myboeingfleet.com. (4) You may view this service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425-227-1221. (5) You may view this 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: http://www.archives.gov/federal-register/cfr/ibr-locations.html. Issued in Renton, Washington, on November 25, 2016. John P. Piccola, Jr., Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2016-29307 Filed 12-20-16; 8:45 am] BILLING CODE 4910-13-P
![Federal Register / Vol. 81, No. 245 / Wednesday, December 21, 2016 / Rules and Regulations 93585
is within the scope of that authority through 028 inclusive, 030, 034, 040, 050, This MCAI may be found in the AD docket
because it addresses an unsafe condition and 052. on the Internet at http://www.regulations.gov
that is likely to exist or develop on by searching for and locating Docket No.
(d) Subject
FAA–2016–9056.
products identified in this rulemaking Air Transport Association (ATA) of
action. America Code 38, Water/waste. (j) Material Incorporated by Reference
Regulatory Findings (1) The Director of the Federal Register
(e) Reason
approved the incorporation by reference
We determined that this AD will not This AD was prompted by an occurrence (IBR) of the service information listed in this
have federalism implications under that was reported of rudder pedal restriction paragraph under 5 U.S.C. 552(a) and 1 CFR
Executive Order 13132. This AD will on a SAAB Model 2000 airplane with the part 51.
not have a substantial direct effect on large potable water system installed, (2) You must use this service information
equipped with in-line heaters. We are issuing as applicable to do the actions required by
the States, on the relationship between
this AD to prevent water spray in case of a this AD, unless this AD specifies otherwise.
the national government and the States, failed pipe or coupling during water filling (i) SAAB Service Bulletin 2000–38–012,
or on the distribution of power and on the ground. This condition, if not dated August 20, 2015.
responsibilities among the various corrected, could freeze parts of the flight (ii) Reserved.
levels of government. control system, possibly resulting in reduced (3) For service information identified in
For the reasons discussed above, I control of the airplane. this AD, contact Saab AB, Saab Aeronautics,
certify that this AD: (f) Compliance SE–581 88, Linköping, Sweden; telephone
1. Is not a ‘‘significant regulatory +46 13 18 5591; fax +46 13 18 4874; email
action’’ under Executive Order 12866; Comply with this AD within the saab2000.techsupport@saabgroup.com;
compliance times specified, unless already
2. Is not a ‘‘significant rule’’ under the Internet http://www.saabgroup.com.
done. (4) You may view this service information
DOT Regulatory Policies and Procedures
(44 FR 11034, February 26, 1979); (g) Repair of Basic Potable Water System at the FAA, Transport Airplane Directorate,
3. Will not affect intrastate aviation in (BPWS) 1601 Lind Avenue SW., Renton, WA. For
Alaska; and Within 24 months after the effective date information on the availability of this
4. Will not have a significant of this AD, install shrinkable tubes on the material at the FAA, call 425–227–1221.
water piping of the BPWS, in accordance (5) You may view this service information
economic impact, positive or negative, that is incorporated by reference at the
on a substantial number of small entities with the Accomplishment Instructions of
SAAB Service Bulletin 2000–38–012, dated National Archives and Records
under the criteria of the Regulatory Administration (NARA). For information on
August 20, 2015.
Flexibility Act. the availability of this material at NARA, call
(h) Other FAA AD Provisions 202–741–6030, or go to: http://
List of Subjects in 14 CFR Part 39 www.archives.gov/federal-register/cfr/ibr-
The following provisions also apply to this
Air transportation, Aircraft, Aviation AD: locations.html.
safety, Incorporation by reference, (1) Alternative Methods of Compliance Issued in Renton, Washington, on
Safety. (AMOCs): The Manager, International December 1, 2016.
Branch, ANM–116, Transport Airplane
Adoption of the Amendment Michael Kaszycki,
Directorate, FAA, has the authority to
approve AMOCs for this AD, if requested Acting Manager, Transport Airplane
Accordingly, under the authority Directorate, Aircraft Certification Service.
delegated to me by the Administrator, using the procedures found in 14 CFR 39.19.
In accordance with 14 CFR 39.19, send your [FR Doc. 2016–29509 Filed 12–20–16; 8:45 am]
the FAA amends 14 CFR part 39 as
request to your principal inspector or local BILLING CODE 4910–13–P
follows: Flight Standards District Office, as
appropriate. If sending information directly
PART 39—AIRWORTHINESS to the International Branch, send it to ATTN:
DIRECTIVES DEPARTMENT OF TRANSPORTATION
Shahram Daneshmandi, Aerospace Engineer,
International Branch, ANM–116, Transport Federal Aviation Administration
■ 1. The authority citation for part 39 Airplane Directorate, FAA, 1601 Lind
continues to read as follows: Avenue SW., Renton, WA 98057–3356;
telephone 425–227–1112; fax 425–227–1149. 14 CFR Part 39
Authority: 49 U.S.C. 106(g), 40113, 44701.
Information may be emailed to: 9-ANM-116- [Docket No. FAA–2015–5816; Directorate
§ 39.13 [Amended] AMOC-REQUESTS@faa.gov. Before using Identifier 2015–NM–029–AD; Amendment
any approved AMOC, notify your appropriate 39–18731; AD 2016–25–05]
■ 2. The FAA amends § 39.13 by adding principal inspector, or lacking a principal
the following new airworthiness inspector, the manager of the local flight RIN 2120–AA64
directive (AD): standards district office/certificate holding
2016–25–17 Saab AB, Saab Aeronautics district office. Airworthiness Directives; The Boeing
(formerly known as Saab AB, Saab (2) Contacting the Manufacturer: For any Company Airplanes
Aerosystems): Amendment 39–18743; requirement in this AD to obtain corrective
actions from a manufacturer, the action must AGENCY: Federal Aviation
Docket No. FAA–2016–9056; Directorate
Identifier 2016–NM–007–AD. be accomplished using a method approved Administration (FAA), DOT.
by the Manager, International Branch, ANM– ACTION: Final rule.
(a) Effective Date 116, Transport Airplane Directorate, FAA; or
This AD is effective January 25, 2017. the European Aviation Safety Agency SUMMARY: We are adopting a new
(EASA); or Saab AB, Saab Aeronautics’ EASA airworthiness directive (AD) for all The
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(b) Affected ADs Design Organization Approval (DOA). If Boeing Company Model 747–100, 747–
None. approved by the DOA, the approval must 100B, 747–100B SUD, 747–200B, 747–
include the DOA-authorized signature. 200C, 747–200F, 747–300, 747–400,
(c) Applicability
This AD applies to certain Saab AB, Saab (i) Related Information 747–400D, 747–400F, 747SR, and 747SP
Aeronautics (formerly known as Saab AB, Refer to Mandatory Continuing series airplanes. This AD was prompted
Saab Aerosystems) Model SAAB 2000 Airworthiness Information (MCAI) EASA by reports of cracking found in the
airplanes, certificated in any category, serial Airworthiness Directive 2016–0013, dated splice plates, hinge fittings, terminal
numbers 017, 019 through 021 inclusive, 027 January 14, 2016, for related information. fittings, the upper skin of the outboard
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![93588 Federal Register / Vol. 81, No. 245 / Wednesday, December 21, 2016 / Rules and Regulations
We have received no definitive data PART 39—AIRWORTHINESS (g)(2), (g)(3), and (g)(4) of this AD at the
that would enable us to provide a cost DIRECTIVES applicable times specified in paragraph 1.E.,
estimate for the on-condition actions ‘‘Compliance,’’ of Boeing Service Bulletin
■ 1. The authority citation for part 39 747–55A2050, Revision 2, dated January 23,
specified in this AD. 2015.
continues to read as follows:
Authority for This Rulemaking (1) For Group 1 through 3 airplanes
Authority: 49 U.S.C. 106(g), 40113, 44701. identified in Boeing Service Bulletin 747–
Title 49 of the United States Code 55A2050, Revision 2, dated January 23, 2015:
§ 39.13 [Amended] Do non-destructive test (NDT) inspections
specifies the FAA’s authority to issue
■ 2. The FAA amends § 39.13 by adding (ultrasonic, high frequency eddy current, and
rules on aviation safety. Subtitle I, low frequency eddy current inspections) or
section 106, describes the authority of the following new airworthiness
directive (AD): open-hole NDT inspections (high frequency
the FAA Administrator. Subtitle VII: eddy current inspections) of Zone B for
Aviation Programs, describes in more 2016–25–05 The Boeing Company: cracking, in accordance with Part 3 or Part
detail the scope of the Agency’s Amendment 39–18731; Docket No. 4 of the Accomplishment Instructions of
authority. FAA–2015–5816; Directorate Identifier Boeing Service Bulletin 747–55A2050,
2015–NM–029–AD. Revision 2, dated January 23, 2015, as
We are issuing this rulemaking under applicable. Accomplishing a Zone B
the authority described in Subtitle VII, (a) Effective Date
inspection required by this paragraph
Part A, Subpart III, Section 44701: This AD is effective January 25, 2017. terminates the inspections required by
‘‘General requirements.’’ Under that (b) Affected ADs paragraph (g) of AD 2006–10–16 for the
section, Congress charges the FAA with This AD affects AD 2006–10–16,
inspected area only.
promoting safe flight of civil aircraft in (2) For Group 4 through 6 airplanes
Amendment 39–14600 (71 FR 28570, May 17,
air commerce by prescribing regulations identified in Boeing Service Bulletin 747–
2006) (‘‘AD 2006–10–16’’).
for practices, methods, and procedures 55A2050, Revision 2, dated January 23, 2015:
(c) Applicability Do open-hole NDT inspections (high
the Administrator finds necessary for
This AD applies to all The Boeing frequency eddy current inspections) of Zone
safety in air commerce. This regulation B for cracking, in accordance with Part 4 of
is within the scope of that authority Company Model 747–100, 747–100B, 747–
100B SUD, 747–200B, 747–200C, 747–200F, the Accomplishment Instructions of Boeing
because it addresses an unsafe condition Service Bulletin 747–55A2050, Revision 2,
747–300, 747–400, 747–400D, 747–400F,
that is likely to exist or develop on 747SR, and 747SP series airplanes; dated January 23, 2015. Accomplishing a
products identified in this rulemaking certificated in any category. Zone B inspection required by this paragraph
action. terminates the inspections required by
(d) Subject paragraph (i) of AD 2006–10–16 for the
Regulatory Findings Air Transport Association (ATA) of inspected area only.
America Code 55, Stabilizers. (3) For Group 7 through 9 airplanes
This AD will not have federalism identified in Boeing Service Bulletin 747–
implications under Executive Order (e) Unsafe Condition 55A2050, Revision 2, dated January 23, 2015:
13132. This AD will not have a This AD was prompted by reports of Do inspections of Zone A (detailed or high
substantial direct effect on the States, on cracking found in the splice plates, hinge frequency eddy current inspections) and
the relationship between the national fittings, terminal fittings, the upper skin of Zone B (open-hole high frequency eddy
government and the States, or on the the outboard and center sections, upper current inspections) for cracking, in
chord, and rear spar webs before reaching the accordance with Part 1, Part 2, or Part 4 of
distribution of power and
inspection interval specified in AD 2006–10– the Accomplishment Instructions of Boeing
responsibilities among the various Service Bulletin 747–55A2050, Revision 2,
16. Cracked and fractured Maraging steel
levels of government. fasteners were also found. We are issuing this dated January 23, 2015, as applicable.
For the reasons discussed above, I AD to detect and correct this cracking, which Accomplishing Zone A and Zone B
certify that this AD: could lead to reduced structural capability of inspections required by this paragraph
the outboard and center sections of the terminates the inspections required by
(1) Is not a ‘‘significant regulatory horizontal stabilizer and could result in loss paragraphs (f), (i), and (l) of AD 2006–10–16
action’’ under Executive Order 12866, of control of the airplane. for the inspected area only.
(2) Is not a ‘‘significant rule’’ under (4) For Group 1 through 3 airplanes
(f) Compliance identified in Boeing Service Bulletin 747–
DOT Regulatory Policies and Procedures
Comply with this AD within the 55A2050, Revision 2, dated January 23, 2015:
(44 FR 11034, February 26, 1979), compliance times specified, unless already Do an inspection of Zone C Maraging or H–
(3) Will not affect intrastate aviation done. 11 steel fasteners to determine whether
in Alaska, and fasteners are magnetic, in accordance with
(g) Repetitive Inspections/Investigative and Part 6 of the Accomplishment Instructions of
(4) Will not have a significant Corrective Actions Boeing Service Bulletin 747–55A2050,
economic impact, positive or negative, At the applicable time specified in Revision 2, dated January 23, 2015.
on a substantial number of small entities paragraph 1.E., ‘‘Compliance,’’ of Boeing
under the criteria of the Regulatory Service Bulletin 747–55A2050, Revision 2, (h) Exceptions to Service Bulletin
dated January 23, 2015, except as required by Specifications
Flexibility Act.
paragraphs (h)(1) and (h)(2) of this AD: Do (1) Where Boeing Service Bulletin 747–
List of Subjects in 14 CFR Part 39 the applicable actions specified in 55A2050, Revision 2, dated January 23, 2015,
paragraphs (g)(1), (g)(2), (g)(3), and (g)(4) of specifies a compliance time ‘‘after the
Air transportation, Aircraft, Aviation this AD, and all applicable related Revision 2 date of this service bulletin,’’ this
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safety, Incorporation by reference, investigative and corrective actions, in AD requires compliance within the specified
Safety. accordance with the applicable part of the compliance time after the effective date of
Accomplishment Instructions of Boeing this AD.
Adoption of the Amendment Service Bulletin 747–55A2050, Revision 2, (2) The Condition column of Table 1 of
dated January 23, 2015, except as required by paragraph 1.E., ‘‘Compliance,’’ of Boeing
Accordingly, under the authority paragraph (h)(3) of this AD. Do all applicable Service Bulletin 747–55A2050, Revision 2,
delegated to me by the Administrator, related investigative and corrective actions dated January 23, 2015, refers to airplanes
the FAA amends 14 CFR part 39 as before further flight. Repeat the applicable with certain total flight cycles and total flight
follows: inspections specified in paragraphs (g)(1), hours. This AD, however, applies to the
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![Federal Register / Vol. 81, No. 245 / Wednesday, December 21, 2016 / Rules and Regulations 93589
airplanes with the specified total flight cycles paragraph (h)(3) of this AD, terminates the emailed to: 9-ANM-Seattle-ACO-AMOC-
and total flight hours as of the effective date actions specified in paragraphs (i)(3)(i) and Requests@faa.gov.
of this AD. (i)(3)(ii) of this AD for the modified area only. (2) Before using any approved AMOC,
(3) Where Boeing Service Bulletin 747– (i) The repetitive inspections required by notify your appropriate principal inspector,
55A2050, Revision 2, dated January 23, 2015, paragraph (g)(2) or (g)(3) of this AD, as or lacking a principal inspector, the manager
specifies to contact Boeing for repair applicable, only for Zone B, as specified in of the local flight standards district office/
instructions: Before further flight, repair Part 4 of the Accomplishment Instructions of certificate holding district office.
using a method approved in accordance with Boeing Service Bulletin 747–55A2050, (3) An AMOC that provides an acceptable
the procedures specified in paragraph (l) of Revision 2, dated January 23, 2015.
level of safety may be used for any repair
this AD. (ii) The repetitive inspections required by
paragraph (i) of AD 2006–10–16 for Zone B, required by this AD if it is approved by the
(i) Optional Terminating Action as specified in Part 4 of the Accomplishment Boeing Commercial Airplanes Organization
(1) For Group 1 through 3 airplanes Instructions of Boeing Service Bulletin 747– Designation Authorization (ODA) that has
identified in Boeing Service Bulletin 747– 55A2050, Revision 2, dated January 23, 2015. been authorized by the Manager, Seattle
55A2050, Revision 2, dated January 23, 2015: ACO, to make those findings. For a repair
(j) Repetitive Post-Modification Inspections method to be approved, the repair must meet
Accomplishing the Zone B modification,
and Corrective Actions the certification basis of the airplane, and the
including all applicable related investigative
and corrective actions, specified in Part 7 of At the applicable time specified in approval must specifically refer to this AD.
the Accomplishment Instructions of Boeing paragraph 1.E., ‘‘Compliance,’’ of Boeing (4) AMOCs approved for AD 2006–10–16,
Service Bulletin 747–55A2050, Revision 2, Service Bulletin 747–55A2050, Revision 2, are approved as AMOCs for the
dated January 23, 2015, except as required by dated January 23, 2015: Do the applicable corresponding provisions of paragraph (g) of
paragraph (h)(3) of this AD, terminates the inspections specified in paragraphs (j)(1) and this AD, except for approved AMOCs that
repetitive inspections specified in paragraphs (j)(2) of this AD, and all applicable corrective allow installation of Maraging or H–11 steel
(i)(1)(i) through (i)(1)(iv) of this AD for the actions, in accordance with Part 8 of the fasteners.
modified area only. Accomplishment Instructions of Boeing
(i) Inspections required by paragraph (g)(1) Service Bulletin 747–55A2050, Revision 2, (m) Related Information
of this AD for Zone B, as specified in Part dated January 23, 2015, except as required by For more information about this AD,
3 and Part 4 of the Accomplishment paragraph (h)(3) of this AD. Do all applicable
contact Nathan Weigand, Aerospace
Instructions of Boeing Service Bulletin 747– corrective actions before further flight.
Engineer, Airframe Branch, ANM–120S,
55A2050, Revision 2, dated January 23, 2015. Repeat the applicable inspections at the
applicable times specified in paragraph 1.E., FAA, Seattle ACO, 1601 Lind Avenue SW.,
(ii) Inspections required by paragraph (g)(4) Renton, WA 98057–3356; phone: 425–917–
of this AD for Zone C, as specified in Part ‘‘Compliance,’’ of Boeing Service Bulletin
747–55A2050, Revision 2, dated January 23, 6428; fax: 425–917–6590; email:
6 of the Accomplishment Instructions of nathan.p.weigand@faa.gov.
Boeing Service Bulletin 747–55A2050, 2015.
Revision 2, dated January 23, 2015. (1) For Group 1 through 3 airplanes (n) Material Incorporated by Reference
(iii) Inspections required by paragraph (g) identified in Boeing Service Bulletin 747–
55A2050, Revision 2, dated January 23, 2015, (1) The Director of the Federal Register
of AD 2006–10–16 for Zone B, as specified approved the incorporation by reference
in Part 3 of the Accomplishment Instructions on which the Zone B modification specified
in paragraph (i)(1) of this AD is done: Do (IBR) of the service information listed in this
of Boeing Service Bulletin 747–55A2050,
non-destructive test (NDT) inspections paragraph under 5 U.S.C. 552(a) and 1 CFR
Revision 2, dated January 23, 2015.
(iv) Inspections required by paragraph (k) (ultrasonic, high frequency eddy current, and part 51.
of AD 2006–10–16 for Zone C, as specified low frequency eddy current inspections) or (2) You must use this service information
open-hole NDT inspections (high frequency as applicable to do the actions required by
in Part 5 of the Accomplishment Instructions
eddy current inspections) of Zone B for this AD, unless the AD specifies otherwise.
of Boeing Service Bulletin 747–55A2050,
cracking. (i) Boeing Service Bulletin 747–55A2050,
Revision 2, dated January 23, 2015.
(2) For Group 4 through 9 airplanes Revision 2, dated January 23, 2015.
(2) For Group 1 through 3 airplanes
identified in Boeing Service Bulletin 747– (ii) Reserved.
identified in Boeing Service Bulletin 747–
55A2050, Revision 2, dated January 23, 2015, (3) For service information identified in
55A2050, Revision 2, dated January 23, 2015:
on which the Zone B modification specified this AD, contact Boeing Commercial
Accomplishing the Zone B open-hole NDT
in paragraph (i)(3) of this AD is done: Do Airplanes, Attention: Data & Services
inspection, repairing any cracking as
open-hole NDT inspections (high frequency
applicable, and replacing fasteners as Management, P.O. Box 3707, MC 2H–65,
eddy current inspections) of Zone B for
specified in Part 4 of the Accomplishment Seattle, WA 98124–2207; telephone: 206–
cracking.
Instructions of Boeing Service Bulletin 747– 544–5000, extension 1; fax: 206–766–5680;
55A2050, Revision 2, dated January 23, 2015, (k) Parts Installation Prohibition Internet https://www.myboeingfleet.com.
terminates the actions specified in As of the effective date of this AD, no (4) You may view this service information
paragraphs (i)(2)(i) and (i)(2)(ii) of this AD for person may install any Maraging or H–11 at the FAA, Transport Airplane Directorate,
the inspected area only. steel fasteners in the locations specified in 1601 Lind Avenue SW., Renton, WA. For
(i) The inspections required by paragraph this AD. Where Boeing Service Bulletin 747– information on the availability of this
(g)(4) of this AD for Zone C, as specified in 55A2050, Revision 2, dated January 23, 2015, material at the FAA, call 425–227–1221.
Part 6 of the Accomplishment Instructions of specifies to install H–11 bolts (kept (5) You may view this service information
Boeing Service Bulletin 747–55A2050, fasteners), this AD requires installation of that is incorporated by reference at the
Revision 2, dated January 23, 2015. Inconel bolts. National Archives and Records
(ii) The repetitive inspections required by Administration (NARA). For information on
paragraph (k) of AD 2006–10–16 for Zone C, (l) Alternative Methods of Compliance
(AMOCs) the availability of this material at NARA, call
as specified in Part 5 of the Accomplishment 202–741–6030, or go to: http://
Instructions of Boeing Service Bulletin 747– (1) The Manager, Seattle Aircraft www.archives.gov/federal-register/cfr/ibr-
55A2050, Revision 2, dated January 23, 2015. Certification Office (ACO), FAA, has the locations.html.
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(3) For Group 4 through 9 airplanes authority to approve AMOCs for this AD, if
identified in Boeing Service Bulletin 747– requested using the procedures found in 14 Issued in Renton, Washington, on
55A2050, Revision 2, dated January 23, 2015: CFR 39.19. In accordance with 14 CFR 39.19, November 25, 2016.
Accomplishing the Zone B modification, send your request to your principal inspector John P. Piccola, Jr.,
including all applicable related investigative or local Flight Standards District Office, as
Acting Manager, Transport Airplane
and corrective actions, specified in Part 7 of appropriate. If sending information directly
Directorate, Aircraft Certification Service.
the Accomplishment Instructions of Boeing to the manager of the ACO, send it to the
Service Bulletin 747–55A2050, Revision 2, attention of the person identified in [FR Doc. 2016–29307 Filed 12–20–16; 8:45 am]
dated January 23, 2015, except as required by paragraph (m) of this AD. Information may be BILLING CODE 4910–13–P
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Document Created: 2018-02-14 09:11:41
Document Modified: 2018-02-14 09:11:41
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Rules and Regulations | |
| Action | Final rule. | |
| Dates | This AD is effective January 25, 2017. | |
| Contact | Nathan Weigand, Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917- 6428; fax: 425-917-6590; email: [email protected] | |
| FR Citation | 81 FR 93585 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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