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for the installation of electro- List of Subjects in 14 CFR Part 25 Issued in Des Moines, Washington, on June 21, 2019. hydraulically actuated seats. The Aircraft, Aviation safety, Reporting applicant must show that the hydraulic and recordkeeping requirements. Christopher R. Parker, system (actuators, reservoir, lines, etc.) Acting Manager, Transport Standards remains intact and free from leakage Authority Citation Branch, Policy and Innovation Division, under the conditions specified in The authority citation for these Aircraft Certification Service. § 25.562. Testing of each seat’s special conditions is as follows: [FR Doc. 2019–14010 Filed 7–1–19; 8:45 am] hydraulic system per § 25.1435(c) may BILLING CODE 4910–13–P Authority: 49 U.S.C. 106(f), 106(g), 40113, be conducted off of the airplane. 44701, 44702, 44704. Flammability of hydraulic fluid used in the seat-movement mechanism must The Proposed Special Conditions DEPARTMENT OF TRANSPORTATION be considered. If the fluid is flammable, Accordingly, the Federal Aviation Federal Aviation Administration it could contribute to a post-crash or in- Administration (FAA) proposes the flight fire. Any failure modes that would following special conditions as part of result in release of the flammable the type certification basis for Model 14 CFR Part 39 hydraulic fluid during a post-crash or GVII series airplanes modified by [Docket No. FAA–2019–0520; Product in-flight fire, causing such fluid to Gulfstream Corporation. Identifier 2019–NM–046–AD] materially increase an existing fire, must 1. It must be shown that the RIN 2120–AA64 be examined. Examples of this could be probability of failure of the backup flex lines burning through and releasing power supply to return seat components Airworthiness Directives; Saab AB, the flammable hydraulic fluid, or the to the required taxi, takeoff, and landing ¥ Saab Aeronautics (Formerly Known as fluid reservoir could be heated in a fire, position is no greater than 10 5 per Saab AB, Saab Aerosystems) resulting in a boiling-liquid, expanding- flight hour. Airplanes vapor explosion. The potential for 2. It must be shown that the spontaneous ignition of the fluid hydraulically actuated components of AGENCY: Federal Aviation coming into contact with hot surfaces or the seat pose no safety hazard to the Administration (FAA), DOT. other ignition sources should also be occupants. Hazards to be considered, ACTION: Notice of proposed rulemaking addressed. The applicant should per the latest revision of Advisory (NPRM). examine any possible failure mode in Circular 25.1309–1, at a minimum are: which the flammable hydraulic fluid a. Injuries caused by crushing of SUMMARY: The FAA proposes to adopt a could be absorbed into materials, such airplane occupants who are between the new airworthiness directive (AD) for as the seat foam and fabric, carpeting, hydraulically actuated components and certain Saab AB, Saab Aeronautics etc. The applicant must show that any any part of the passenger cabin when Model airplanes. This fluid-soaked seat parts remain self- the leg rest or backrest is actuated. proposed AD was prompted by reports extinguishing. The applicant must also b. The risk of loss of function of a of loose and irregular fasteners at the show that flammability of dry residue, control or proximity switch resulting in forward end of the nacelle upper which may be present from a slow leak the pump motor being commanded to longeron, where the bulkhead frame and or fluid seepage, does not degrade the stay on after the hydraulic actuator(s) struts are attached to the engine flammability characteristics of any have reached their minimum or mounting structure (EMS). This materials the fluid contacts, to a level maximum limit, creating potential for proposed AD would require below the requirements specified in motor overheating or fire. modification of the EMS and structural § 25.853. c. The potential for a significant attachments. The FAA is proposing this These proposed special conditions contribution to a fire in the event fluid AD to address the unsafe condition on contain the additional safety standards comes into contact with hot surfaces or these products. other ignition sources, and the potential that the Administrator considers DATES: The FAA must receive comments for release of toxic or flammable vapors necessary to establish a level of safety on this proposed AD by August 16, and gasses. equivalent to that established by the 2019. existing airworthiness standards. 3. It must be shown that the hydraulic system (actuators, reservoir, lines, etc.) ADDRESSES: You may send comments, Applicability remains intact and free from leakage using the procedures found in 14 CFR As discussed above, these proposed under the conditions specified in 11.43 and 11.45, by any of the following special conditions are applicable to the § 25.562. Testing of each seat’s methods: Gulfstream Model GVII series airplane. hydraulic system per § 25.1435(c) may • Federal eRulemaking Portal: Go to Should Gulfstream apply at a later date be conducted off of the airplane. http://www.regulations.gov. Follow the for a supplemental type certificate to 4. Section 25.863 requires instructions for submitting comments. modify any other model included on consideration of any effects the • Fax: 202–493–2251. Type Certificate No. T00021AT to hydraulic fluid, including the fluid as a • Mail: U.S. Department of incorporate the same novel or unusual dry residue, could have on combustible Transportation, Docket Operations, M– design feature, these special conditions or absorbing materials. The 30, West Building Ground Floor, Room would apply to that model as well. characteristics of such flammable fluid W12–140, 1200 New Jersey Avenue SE, in these conditions must be tested to the Washington, DC 20590. Conclusion requirements of § 25.853(a) and (c), or • Hand Delivery: Deliver to Mail This action affects only certain novel the materials must be shielded in a address above between 9 a.m. and 5 or unusual design features on one model manner that prevents contact by the p.m., Monday through Friday, except series of airplane. It is not a rule of fluid. However, as an alternative to such Federal holidays. general applicability and affects only testing or shielding, the applicant may For service information identified in the applicant who applied to the FAA provide, in accordance with § 25.863(c), this NPRM, contact Saab AB, Saab for approval of these features on the a quick-acting means that alerts the Aeronautics, SE–581 88, Linko¨ping, airplane. crew that hydraulic fluid has leaked. Sweden; phone: +46 13 18 5591; fax:

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+46 13 18 4874; email: and may amend this NPRM because of www.regulations.gov by searching for [email protected]; those comments. and locating Docket No. FAA–2019– internet: http://www.saabgroup.com. The FAA will post all comments we 0520. You may view this service information receive, without change, to http:// at the FAA, Transport Standards www.regulations.gov, including any Related Service Information Under 1 Branch, 2200 South 216th St., Des personal information you provide. The CFR Part 51 agency will also post a report Moines, WA. For information on the Saab has issued Service Bulletin summarizing each substantive verbal availability of this material at the FAA, 2000–54–036, Revision 02, dated contact we receive about this NPRM. call 206–231–3195. January 18, 2019. This service Examining the AD Docket Discussion information describes procedures for The European Aviation Safety Agency modification of the EMS and structural You may examine the AD docket on attachments. This service information is the internet at http:// (EASA), which is the Technical Agent for the Member States of the European reasonably available because the www.regulations.gov by searching for interested parties have access to it and locating Docket No. FAA–2019– Union, has issued EASA AD 2019–0054, dated March 18, 2019 (referred to after through their normal course of business 0520; or in person at Docket Operations or by the means identified in the between 9 a.m. and 5 p.m., Monday this as the Mandatory Continuing ADDRESSES section. through Friday, except Federal holidays. Airworthiness Information, or ‘‘the The AD docket contains this NPRM, the MCAI’’), to correct an unsafe condition FAA’s Determination regulatory evaluation, any comments for certain Saab AB, Saab Aeronautics received, and other information. The Model SAAB 2000 airplanes. The MCAI This product has been approved by street address for Docket Operations is states: the aviation authority of another listed above. Comments will be Occurrences have been reported where, country, and is approved for operation available in the AD docket shortly after during maintenance, loose and irregular in the United States. Pursuant to our receipt. fasteners were found at the forward end of bilateral agreement with the State of the nacelle upper longeron, where the Design Authority, the FAA has been FOR FURTHER INFORMATION CONTACT: bulkhead frame and struts are attached to the notified of the unsafe condition Shahram Daneshmandi, Aerospace engine mounting structure (EMS). described in the MCAI and service Engineer, International Section, Investigation results indicate a potential risk information referenced above. The Transport Standards Branch, FAA, 2200 for significant reduction of the safety agency is proposing this AD because we South 216th St., Des Moines, WA 98198; margins. evaluated all the relevant information phone and fax: 206–231–3220. This condition, if not corrected, could cause development of cracks in the EMS, and determined the unsafe condition SUPPLEMENTARY INFORMATION: leading to failure of the affected engine described previously is likely to exist or Comments Invited mount-to-aeroplane structural connection, develop on other products of the same possibly resulting in significant airframe type design. The FAA invites you to send any vibrations and detrimental effects on the written relevant data, views, or surrounding pylon/nacelle structure, Proposed Requirements of This NPRM arguments about this proposal. Send compromising its integrity. your comments to an address listed To address this potential unsafe condition, This proposed AD would require SAAB designed a repair and issued the SB ADDRESSES accomplishing the actions specified in under the section. Include [Saab Service Bulletin 2000–54–036, ‘‘Docket No. FAA–2019–0520; Product the service information described Revision 02, dated January 18, 2019] to previously. Identifier 2019–NM–046–AD’’ at the provide instructions to install that repair as beginning of your comments. The preventive modification. Costs of Compliance agency specifically invites comments on For the reason described above, this the overall regulatory, economic, [EASA] AD requires modification of the EMS The FAA estimates that this proposed environmental, and energy aspects of and attachments. AD affects 11 airplanes of U.S. registry. this NPRM. The agency will consider all You may examine the MCAI in the The agency estimates the following comments received by the closing date AD docket on the internet at http:// costs to comply with this proposed AD:

ESTIMATED COSTS FOR REQUIRED ACTIONS

Cost per Cost on U.S. Labor cost Parts cost product operators

256 work-hours × $85 per hour = $21,760 ...... $2,500 $24,260 $266,860

The FAA has received no definitive detail the scope of the Agency’s This regulation is within the scope of data that would enable us to provide authority. that authority because it addresses an cost estimates for the on-condition The FAA is issuing this rulemaking unsafe condition that is likely to exist or repairs specified in this proposed AD. under the authority described in develop on products identified in this rulemaking action. Authority for This Rulemaking Subtitle VII, Part A, Subpart III, Section 44701: ‘‘General requirements.’’ Under This proposed AD is issued in Title 49 of the United States Code that section, Congress charges the FAA accordance with authority delegated by specifies the FAA’s authority to issue with promoting safe flight of civil the Executive Director, Aircraft rules on aviation safety. Subtitle I, aircraft in air commerce by prescribing Certification Service, as authorized by section 106, describes the authority of regulations for practices, methods, and FAA Order 8000.51C. In accordance the FAA Administrator. Subtitle VII: procedures the Administrator finds with that order, issuance of ADs is Aviation Programs, describes in more necessary for safety in air commerce. normally a function of the Compliance

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and Airworthiness Division, but during (d) Subject Transport Standards Branch, FAA; or the this transition period, the Executive Air Transport Association (ATA) of European Aviation Safety Agency (EASA); or Director has delegated the authority to America Code 54, Nacelles/pylons. Saab AB, Saab Aeronautics’ EASA Design issue ADs applicable to transport Organization Approval (DOA). If approved by (e) Reason category airplanes and associated the DOA, the approval must include the DOA-authorized signature. appliances to the Director of the System This AD was prompted by reports of loose Oversight Division. and irregular fasteners at the forward end of (j) Related Information the nacelle upper longeron, where the Regulatory Findings bulkhead frame and struts are attached to the (1) Refer to Mandatory Continuing engine mounting structure (EMS). The FAA Airworthiness Information (MCAI) EASA AD The FAA determined that this is issuing this AD to address loose and 2019–0054, dated March 18, 2019, for related proposed AD would not have federalism irregular fasteners of the EMS which could information. This MCAI may be found in the implications under Executive Order cause development of cracks in the EMS, AD docket on the internet at http:// 13132. This proposed AD would not leading to failure of the affected engine www.regulations.gov by searching for and have a substantial direct effect on the mount-to-airplane structural connection, locating Docket No. FAA–2019–0520. States, on the relationship between the possibly resulting in significant airframe (2) For more information about this AD, vibrations and detrimental effects on the contact Shahram Daneshmandi, Aerospace national Government and the States, or Engineer, International Section, Transport on the distribution of power and surrounding pylon/nacelle structure, and loss of structural integrity. Standards Branch, FAA, 2200 South 216th responsibilities among the various St., Des Moines, WA 98198; phone and fax: levels of government. (f) Compliance 206–231–3220. For the reasons discussed above, I Comply with this AD within the (3) For service information identified in certify this proposed regulation: compliance times specified, unless already this AD, contact Saab AB, Saab Aeronautics, (1) Is not a ‘‘significant regulatory done. SE–581 88, Linko¨ping, Sweden; phone: +46 action’’ under Executive Order 12866; 13 18 5591; fax: +46 13 18 4874; email: (2) Will not affect intrastate aviation (g) Modification of the EMS [email protected]; in Alaska; and Within 3,000 flight hours or 24 months, internet: http://www.saabgroup.com. You (3) Will not have a significant whichever occurs first after the effective date may view this service information at the economic impact, positive or negative, of this AD, modify the EMS and structural FAA, Transport Standards Branch, 2200 on a substantial number of small entities attachments, in accordance with the South 216th St., Des Moines, WA. For under the criteria of the Regulatory Accomplishment Instructions of Saab Service information on the availability of this material at the FAA, call 206–231–3195. Flexibility Act. Bulletin 2000–54–036, Revision 02, dated January 18, 2019. Where Saab Service Issued in Des Moines, Washington, on June List of Subjects in 14 CFR Part 39 Bulletin 2000–54–036, Revision 02, dated 21, 2019. January 18, 2019, specifies to contact Saab for Air transportation, Aircraft, Aviation appropriate action: Before further flight, Dionne Palermo, safety, Incorporation by reference, accomplish corrective actions in accordance Acting Director, System Oversight Division, Safety. with the procedures specified in paragraph Aircraft Certification Service. The Proposed Amendment (i)(2) of this AD. [FR Doc. 2019–13889 Filed 7–1–19; 8:45 am] BILLING CODE 4910–13–P Accordingly, under the authority (h) Credit for Previous Actions delegated to me by the Administrator, This paragraph provides credit for actions the FAA proposes to amend 14 CFR part required by paragraph (g) of this AD, if those DEPARTMENT OF TRANSPORTATION 39 as follows: actions were performed before the effective date of this AD using Saab Service Bulletin Federal Aviation Administration PART 39—AIRWORTHINESS 2000–54–036, dated November 6, 2018; or DIRECTIVES Saab Service Bulletin 2000–54–036, Revision 01, dated January 7, 2019. 14 CFR Part 39 ■ 1. The authority citation for part 39 (i) Other FAA AD Provisions [Docket No. FAA–2019–0442; Product Identifier 2018–NM–171–AD] continues to read as follows: The following provisions also apply to this Authority: 49 U.S.C. 106(g), 40113, 44701. AD: RIN 2120–AA64 (1) Alternative Methods of Compliance § 39.13 [Amended] (AMOCs): The Manager, International Airworthiness Directives; The ■ 2. The FAA amends § 39.13 by adding Section, Transport Standards Branch, FAA, Company Airplanes the following new airworthiness has the authority to approve AMOCs for this directive (AD): AD, if requested using the procedures found AGENCY: Federal Aviation in 14 CFR 39.19. In accordance with 14 CFR Administration (FAA), DOT. Saab AB, Saab Aeronautics (Formerly 39.19, send your request to your principal Known as Saab AB, Saab Aerosystems): inspector or local Flight Standards District ACTION: Notice of proposed rulemaking Docket No. FAA–2019–0520; Product Office, as appropriate. If sending information (NPRM). Identifier 2019–NM–046–AD. directly to the International Section, send it SUMMARY: (a) Comments Due Date to the attention of the person identified in The FAA proposes to paragraph (j)(2) of this AD. Information may supersede Airworthiness Directive (AD) We must receive comments by August 16, 2017–15–04, which applies to certain 2019. be emailed to: 9-ANM-116-AMOC- [email protected]. Before using any The Boeing Company Model 787–8 and (b) Affected ADs approved AMOC, notify your appropriate 787–9 airplanes. AD 2017–15–04 None. principal inspector, or lacking a principal requires replacement of affected inspector, the manager of the local flight (c) Applicability electromechanical actuators (EMAs). standards district office/certificate holding Since AD 2017–15–04 was issued, the district office. This AD applies to Saab AB, Saab FAA has determined that discrepant Aeronautics (formerly known as Saab AB, (2) Contacting the Manufacturer: For any Saab Aerosystems) Model SAAB 2000 requirement in this AD to obtain corrective EMAs may have been installed on airplanes, certificated in any category, all actions from a manufacturer, the action must airplanes outside the original serial numbers, except serial numbers 006, be accomplished using a method approved applicability of AD 2017–15–04. This 043, 056, and 061. by the Manager, International Section, proposed AD would retain the

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