81_FR_48836 81 FR 48693 - Fuel Tank Vent Fire Protection; Correction

81 FR 48693 - Fuel Tank Vent Fire Protection; Correction

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 81, Issue 143 (July 26, 2016)

Page Range48693-48694
FR Document2016-17590

The FAA is correcting a final rule published in the Federal Register on June 24, 2016 (81 FR 41200). In that final rule, the FAA amended certain airworthiness regulations for transport category airplanes to require fuel tank designs that prevent a fuel tank explosion caused by the propagation of flames, from external fires, through the fuel tank vents. The final rule requires a delay of two minutes and thirty seconds between exposure of external fuel tank vents to ignition sources and explosions caused by propagation of flames into the fuel tank, thus increasing the time available for passenger evacuation and emergency response. The amendments apply to applications for new type certificates and certain applications for amended or supplemental type certificates. The amendments also require certain airplanes produced in the future and operated by air carriers to meet the new standards. However, in that document, the amendment numbers for the final rules were incorrect, and an airplane model number in a footnote was incorrect. This document now posts the correct amendment numbers and airplane model number in the footnote.

Federal Register, Volume 81 Issue 143 (Tuesday, July 26, 2016)
[Federal Register Volume 81, Number 143 (Tuesday, July 26, 2016)]
[Rules and Regulations]
[Pages 48693-48694]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-17590]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Parts 25, 121, and 129

[Docket No.: FAA-2014-0500; Amdt. Nos. 25-143, 121-375, and 129-52]
RIN 2120-AK30


Fuel Tank Vent Fire Protection; Correction

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; correction.

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SUMMARY: The FAA is correcting a final rule published in the Federal 
Register on June 24, 2016 (81 FR 41200). In that final rule, the FAA 
amended certain airworthiness regulations for transport category 
airplanes to require fuel tank designs that prevent a fuel tank 
explosion caused by the propagation of flames, from external fires, 
through the fuel tank vents. The final rule requires a delay of two 
minutes and thirty seconds between exposure of external fuel tank vents 
to ignition sources and explosions caused by propagation of flames into 
the fuel tank, thus increasing the time available for passenger 
evacuation and emergency response. The amendments apply to applications 
for new type certificates and certain applications for amended or 
supplemental type certificates. The amendments also require certain 
airplanes produced in the future and operated by air carriers to meet 
the new standards.
    However, in that document, the amendment numbers for the final 
rules were incorrect, and an airplane model number in a footnote was 
incorrect. This document now posts the correct amendment numbers and 
airplane model number in the footnote.

DATES: This correction is effective on July 26, 2016.

FOR FURTHER INFORMATION CONTACT: For technical questions concerning 
this action, contact Mike Dostert, Propulsion and Mechanical Systems 
Branch, ANM-112, Transport Airplane Directorate, Aircraft Certification 
Service, Federal Aviation Administration, 1601 Lind Ave. SW., Renton, 
WA 98057-3356; telephone (425) 227-2132; facsimile (425) 227 1149; 
email Mike.Dostert@faa.gov.

SUPPLEMENTARY INFORMATION:

Background

    On June 24, 2016, the FAA published a final rule titled, ``Fuel 
Tank Vent Fire Protection'' in the Federal Register (81 FR 41200).
    The intent of that rule is to prevent fuel tank explosions caused 
by ignition from external ignition sources of fuel vapor either 
contained in vapor spaces \1\ or exiting from vapor spaces through the 
fuel tank vent outlets. Potential external ignition sources include, 
but are not limited to, ground handling equipment, fuel fires that 
result from refueling spills, or ground fires that follow a survivable 
crash landing in which the fuel tank and the vent system remain intact. 
Means to prevent or delay the propagation of flame \2\ from external 
sources into the fuel tank through the fuel tank vent system \3\ would 
also prevent or delay fuel tank explosions following certain accidents. 
These means include flame arrestors or fuel tank inerting. This 
prevention or delay would provide additional time for the safe 
evacuation of passengers from the airplane and for emergency personnel 
to provide assistance.
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    \1\ A vapor space is any portion of the airplane fuel tanks and 
the fuel tank vent system that, if such tanks and system held any 
fuel, could contain fuel vapor.
    \2\ Flame propagation is the spread of a flame in a combustible 
environment outward from the point at which the combustion started.
    \3\ A fuel tank vent system is a system that ventilates fuel 
vapor from the airplane fuel tanks to the atmosphere. A fuel tank 
vent system ensures that the air and fuel pressure within the fuel 
tank stay within structural limits required by Sec.  25.975(a).
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    The rule applies to applications for new type certificates and 
applications for amended or supplemental type certificates on 
significant product-level change projects in which title 14, Code of 
Federal Regulations (14 CFR) 25.975, ``Fuel tank vents and carburetor 
vapor vents,'' is applicable to a changed area. Additionally, a new 
operating requirement in both 14 CFR part 121, ``Operating 
Requirements: Domestic, Flag, and Supplemental Operations,'' and 14 CFR 
part 129, ``Operations: Foreign Air Carriers and Foreign Operators of 
U.S.-Registered Aircraft Engaged in Common Carriage,'' applies to 
airplanes that are issued an original airworthiness certificate after a 
specified date.
    However, the rule published with incorrect amendment numbers, ``25-
142, 21-376, and 129-53.'' Amendment number 25-142 is the same 
amendment number as the rule titled ``Harmonization of Airworthiness 
Standards--Fire Extinguishers and Class B and F Cargo Compartments,'' 
which published in the Federal Register on February 16, 2016 (81 FR 
7698). Amendment numbers 21-376 and 129-53 are incorrect designations. 
The correct amendment numbers for this rule are ``25-143, 121-375, and 
129-52.''

[[Page 48694]]

    In the same publication on page 41203 in footnote number 14, the 
Lockheed airplane model number referenced is ``328.'' The correct 
number should be ``382.''

Correction

    In FR Doc. 2016-14454, beginning on page 41200 in the Federal 
Register of June 24, 2016, make the following corrections:

Correction

    1. On page 41200, in the second column, correct the 4th header 
paragraph to read as follows:
    ``[Docket No.: FAA-2014-0500; Amdt. Nos. 25-143, 121-375, and 129-
52].''
    2. On page 41203, in the second column, correct the text of 
footnote number 14 to read as follows:
    ``The previously approved Lockheed 382 and Embraer flame arrestors 
would not have met the 2 minute and 30 second requirement.''

    Issued under authority provided by 49 U.S.C. 106(f) and 44701(a) 
in Washington, DC, on July 19, 2016.
Lirio Liu,
Director, Office of Rulemaking.
[FR Doc. 2016-17590 Filed 7-25-16; 8:45 am]
 BILLING CODE 4910-13-P



                                                                 Federal Register / Vol. 81, No. 143 / Tuesday, July 26, 2016 / Rules and Regulations                                                   48693

                                             advance filing does not violate this                     DEPARTMENT OF TRANSPORTATION                             The intent of that rule is to prevent
                                             subpart or the principles of ethical                                                                           fuel tank explosions caused by ignition
                                             conduct contained in § 2635.101(b).                      Federal Aviation Administration                       from external ignition sources of fuel
                                                                                                                                                            vapor either contained in vapor spaces 1
                                                Example 1 to paragraph (c): An employee
                                                                                                      14 CFR Parts 25, 121, and 129                         or exiting from vapor spaces through the
                                             of the Federal Labor Relations Authority who
                                                                                                      [Docket No.: FAA–2014–0500; Amdt. Nos.                fuel tank vent outlets. Potential external
                                             is a public filer began negotiating for future
                                                                                                      25–143, 121–375, and 129–52]                          ignition sources include, but are not
                                             employment with a law firm. At the time he
                                                                                                                                                            limited to, ground handling equipment,
                                             began negotiating for future employment                  RIN 2120–AK30
                                             with the law firm, he was not participating
                                                                                                                                                            fuel fires that result from refueling
                                             personally and substantially in a particular
                                                                                                                                                            spills, or ground fires that follow a
                                                                                                      Fuel Tank Vent Fire Protection;                       survivable crash landing in which the
                                             matter that, to his knowledge, had a direct              Correction
                                             and predictable effect on the financial
                                                                                                                                                            fuel tank and the vent system remain
                                             interest of the law firm. Although the                   AGENCY:  Federal Aviation                             intact. Means to prevent or delay the
                                             employee was not required to file a recusal              Administration (FAA), DOT.                            propagation of flame 2 from external
                                             statement because he did not have a conflict             ACTION: Final rule; correction.                       sources into the fuel tank through the
                                             of interest or appearance of a conflict of                                                                     fuel tank vent system 3 would also
                                             interest with the law firm identified in the
                                                                                                      SUMMARY:    The FAA is correcting a final             prevent or delay fuel tank explosions
                                             notification statement, the Office of                    rule published in the Federal Register                following certain accidents. These
                                             Government Ethics encourages the employee                on June 24, 2016 (81 FR 41200). In that               means include flame arrestors or fuel
                                             to submit a notification of recusal at the same          final rule, the FAA amended certain                   tank inerting. This prevention or delay
                                             time that he files the notification statement            airworthiness regulations for transport               would provide additional time for the
                                             regarding the negotiations for future                    category airplanes to require fuel tank               safe evacuation of passengers from the
                                             employment in order to ensure that the                   designs that prevent a fuel tank                      airplane and for emergency personnel to
                                             requirement of paragraph (b) of this section             explosion caused by the propagation of                provide assistance.
                                             is satisfied if a conflict of interest or an             flames, from external fires, through the                 The rule applies to applications for
                                             appearance of a conflict of interest later               fuel tank vents. The final rule requires              new type certificates and applications
                                             arises. The agency ethics official should                a delay of two minutes and thirty                     for amended or supplemental type
                                             counsel the employee on applicable                       seconds between exposure of external                  certificates on significant product-level
                                             requirements but is under no obligation to               fuel tank vents to ignition sources and               change projects in which title 14, Code
                                             notify the employee’s supervisor that the                explosions caused by propagation of                   of Federal Regulations (14 CFR) 25.975,
                                             employee is negotiating for employment.                  flames into the fuel tank, thus                       ‘‘Fuel tank vents and carburetor vapor
                                                Example 2 to paragraph (c): An employee               increasing the time available for                     vents,’’ is applicable to a changed area.
                                             of the General Services Administration is                passenger evacuation and emergency                    Additionally, a new operating
                                             contacted by a prospective employer                      response. The amendments apply to                     requirement in both 14 CFR part 121,
                                             regarding scheduling an interview for the                applications for new type certificates                ‘‘Operating Requirements: Domestic,
                                             following week to begin discussing the                   and certain applications for amended or               Flag, and Supplemental Operations,’’
                                             possibility of future employment. The                    supplemental type certificates. The                   and 14 CFR part 129, ‘‘Operations:
                                             employee discusses the matter with the                   amendments also require certain                       Foreign Air Carriers and Foreign
                                             ethics official and chooses to file a                    airplanes produced in the future and                  Operators of U.S.-Registered Aircraft
                                             notification and recusal statement prior to              operated by air carriers to meet the new              Engaged in Common Carriage,’’ applies
                                             the interview. The notification and recusal              standards.                                            to airplanes that are issued an original
                                             statement contain the identity of the                       However, in that document, the                     airworthiness certificate after a specified
                                             prospective employer and an estimated date               amendment numbers for the final rules                 date.
                                             of when the interview will occur. The                    were incorrect, and an airplane model                    However, the rule published with
                                             employee has complied with the notification              number in a footnote was incorrect. This              incorrect amendment numbers, ‘‘25–
                                             requirement of section 17 of the STOCK Act.              document now posts the correct                        142, 21–376, and 129–53.’’ Amendment
                                                                                                      amendment numbers and airplane                        number 25–142 is the same amendment
                                               (d) Agreement of future employment                     model number in the footnote.                         number as the rule titled
                                             or compensation for the purposes of                                                                            ‘‘Harmonization of Airworthiness
                                                                                                      DATES: This correction is effective on
                                             § 2635.607 means any arrangement                                                                               Standards—Fire Extinguishers and Class
                                                                                                      July 26, 2016.
                                             concerning employment that will                                                                                B and F Cargo Compartments,’’ which
                                                                                                      FOR FURTHER INFORMATION CONTACT: For                  published in the Federal Register on
                                             commence after the termination of
                                                                                                      technical questions concerning this                   February 16, 2016 (81 FR 7698).
                                             Government service. The term also
                                                                                                      action, contact Mike Dostert, Propulsion              Amendment numbers 21–376 and 129–
                                             means any arrangement to compensate                      and Mechanical Systems Branch, ANM–
                                             in exchange for services that will                                                                             53 are incorrect designations. The
                                                                                                      112, Transport Airplane Directorate,                  correct amendment numbers for this
                                             commence after the termination of                        Aircraft Certification Service, Federal
                                             Government service. The term includes,                                                                         rule are ‘‘25–143, 121–375, and 129–
                                                                                                      Aviation Administration, 1601 Lind                    52.’’
                                             among other things, an arrangement to                    Ave. SW., Renton, WA 98057–3356;
                                             compensate for teaching, speaking, or                    telephone (425) 227–2132; facsimile                      1 A vapor space is any portion of the airplane fuel
                                             writing that will commence after the                     (425) 227 1149; email Mike.Dostert@                   tanks and the fuel tank vent system that, if such
                                             termination of Government service.                       faa.gov.                                              tanks and system held any fuel, could contain fuel
                                                                                                                                                            vapor.
                                             [FR Doc. 2016–17553 Filed 7–25–16; 8:45 am]
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                                                                                                      SUPPLEMENTARY INFORMATION:                               2 Flame propagation is the spread of a flame in

                                             BILLING CODE 6345–03–P                                                                                         a combustible environment outward from the point
                                                                                                      Background                                            at which the combustion started.
                                                                                                                                                               3 A fuel tank vent system is a system that
                                                                                                         On June 24, 2016, the FAA published
                                                                                                                                                            ventilates fuel vapor from the airplane fuel tanks to
                                                                                                      a final rule titled, ‘‘Fuel Tank Vent Fire            the atmosphere. A fuel tank vent system ensures
                                                                                                      Protection’’ in the Federal Register (81              that the air and fuel pressure within the fuel tank
                                                                                                      FR 41200).                                            stay within structural limits required by § 25.975(a).



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                                             48694               Federal Register / Vol. 81, No. 143 / Tuesday, July 26, 2016 / Rules and Regulations

                                               In the same publication on page                        (NAS) Efficient Streamline Services                   be retained as a part of the MON. The
                                             41203 in footnote number 14, the                         Initiative. Additionally, this policy                 FAA also sought recommendations from
                                             Lockheed airplane model number                           addresses the regulatory processes the                aviation industry stakeholders through
                                             referenced is ‘‘328.’’ The correct number                FAA plans to follow to discontinue                    the RTCA Tactical Operations
                                             should be ‘‘382.’’                                       VORs.                                                 Committee (TOC). With this collective
                                                                                                      DATES: Effective July 26, 2016.                       input, the FAA developed the criteria to
                                             Correction
                                                                                                                                                            determine which VORs would be
                                               In FR Doc. 2016–14454, beginning on                    FOR FURTHER INFORMATION CONTACT: Ms.
                                                                                                                                                            candidates for retention. VORs not
                                             page 41200 in the Federal Register of                    Leonixa Salcedo, VOR MON Program
                                                                                                                                                            meeting these criteria were considered
                                             June 24, 2016, make the following                        Manager, AJM–324, Navigation
                                                                                                                                                            as discontinuance candidates.
                                             corrections:                                             Programs, Federal Aviation
                                                                                                                                                              The following criteria were used by
                                                                                                      Administration, 800 Independence
                                             Correction                                                                                                     the FAA to determine which VORs
                                                                                                      Avenue SW., Washington, DC 20591;
                                                                                                                                                            would be retained as a part of the MON:
                                               1. On page 41200, in the second                        email: vormon@faa.gov; telephone: (844)
                                                                                                      4VORMON (844–486–7666).                               — Retain VORs to perform Instrument
                                             column, correct the 4th header                                                                                   Landing System (ILS), Localizer
                                             paragraph to read as follows:                            SUPPLEMENTARY INFORMATION:
                                                                                                                                                              (LOC), or VOR approaches supporting
                                               ‘‘[Docket No.: FAA–2014–0500; Amdt.
                                                                                                      Background                                              MON airports at suitable destinations
                                             Nos. 25–143, 121–375, and 129–52].’’
                                               2. On page 41203, in the second                          On December 15, 2011 the FAA                          within 100 NM of any location within
                                             column, correct the text of footnote                     published in the Federal Register a                     the CONUS. Selected approaches
                                             number 14 to read as follows:                            notice of proposed policy and request                   would not require Automatic
                                               ‘‘The previously approved Lockheed                     for comments (76 FR 77939) on the                       Direction Finder (ADF), Distance
                                             382 and Embraer flame arrestors would                    FAA’s proposed strategy for gradually                   Measuring Equipment (DME), Radar,
                                             not have met the 2 minute and 30                         reducing the current VOR network to a                   or GPS.
                                             second requirement.’’                                    Minimum Operational Network (MON)                     — Retain VORs to support international
                                                                                                      as the NAS transitions to performance-                  oceanic arrival routes.
                                               Issued under authority provided by 49                                                                        — Retain VORs to provide coverage at
                                             U.S.C. 106(f) and 44701(a) in Washington,                based navigation (PBN) as part of the
                                                                                                      Next Generation Air Transportation                      and above 5,000 ft AGL.
                                             DC, on July 19, 2016.                                                                                          — Retain most VORs in the Western
                                             Lirio Liu,                                               System (NextGen). The FAA announced
                                                                                                      that, as part of a NAS Efficient                        U.S. Mountainous Area (WUSMA),
                                             Director, Office of Rulemaking.                                                                                  specifically those anchoring Victor
                                                                                                      Streamlined Services Initiative, the
                                             [FR Doc. 2016–17590 Filed 7–25–16; 8:45 am]
                                                                                                      number of conventional NAVAIDs                          airways through high elevation
                                             BILLING CODE 4910–13–P
                                                                                                      would be reduced while more efficient                   terrain.
                                                                                                                                                            — Retain VORs required for military
                                                                                                      Area Navigation (RNAV) routes and
                                                                                                                                                              use.
                                             DEPARTMENT OF TRANSPORTATION                             procedures are implemented throughout
                                                                                                                                                            — VORs outside of the CONUS were not
                                                                                                      the NAS. The FAA noted its intention
                                                                                                                                                              considered for discontinuance under
                                             Federal Aviation Administration                          to convene a working group to assist in
                                                                                                                                                              the VOR MON Implementation
                                                                                                      developing a candidate list of VORs for
                                                                                                                                                              Program.
                                             14 CFR Parts 91, 121, 125, 129, and 135                  discontinuance using relevant
                                                                                                      operational, safety, cost, and economic                 The following considerations were
                                             [Docket No. FAA–2011–1082]                               criteria. Interested parties were invited             used to supplement the VOR MON
                                                                                                      to participate in the review of this                  criteria above:
                                             Provision of Navigation Services for
                                             the Next Generation Air Transportation                   policy and planning effort by submitting              — Only FAA owned/operated VORs
                                             System (NextGen) Transition to                           written comments on the proposal.                       were considered for discontinuance.
                                                                                                        The FAA reviewed all 330 comments                   — Co-located DME and Tactical Air
                                             Performance-Based Navigation (PBN)
                                                                                                      received and on August 21, 2012,                        Navigation (TACAN) systems will
                                             (Plan for Establishing a VOR Minimum
                                                                                                      published in the Federal Register the                   generally be retained when the VOR
                                             Operational Network)
                                                                                                      disposition of the comments on the                      service is terminated.
                                             AGENCY:  Federal Aviation                                notice of proposed policy (77 FR 50420).              — Co-located communication services
                                             Administration (FAA), DOT.                               In considering and disposing of the                     relocated or reconfigured to continue
                                             ACTION: Final policy statement.                          comments, the FAA noted that it would                   transmitting their services.
                                                                                                      develop an initial VOR MON Plan
                                             SUMMARY:   This action sets forth the Very                                                                     Working Group
                                                                                                      which would be made publicly
                                             High Frequency (VHF) Omnidirectional                     available. The FAA renewed its                           Using the established criteria, the
                                             Range (VOR) Minimum Operational                          intention to convene a working group                  FAA convened an internal working
                                             Network (MON) policy as proposed in                      that would assist in developing                       group to develop a candidate list of
                                             the Proposed Provision of Navigation                     objective criteria which would be                     VORs using the VOR MON criteria
                                             Services for the Next Generation Air                     applied consistently nationally and                   relevant to operational, safety, cost, and
                                             Transportation System (NextGen)                          regionally to help identify those VOR                 economic considerations. The group
                                             Transition to Performance-Based                          facilities that would remain operational.             developed the VOR MON service by
                                             Navigation (PBN) notice of proposed                                                                            first selecting MON airports that met the
                                             policy published on December 15, 2011                    Criteria for Assessing VOR                            criteria listed above. Airports with ILS
                                             (76 FR 77939). This document provides                    Discontinuance                                        approaches that met the criteria were
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                                             the discontinuance selection criteria                      After the FAA published the                         selected in preference to VOR
                                             and candidate list of VOR Navigational                   disposition of comments, stakeholders,                approaches. If two airports in close
                                             Aids (NAVAIDs) targeted for                              industry, and military services provided              proximity had suitable approaches, then
                                             discontinuance as part of the VOR MON                    further inputs to the FAA for                         the airport whose ILS or VOR approach
                                             Implementation Program and United                        consideration in developing the criteria              required the FAA to retain the fewest
                                             States (U.S.) National Airspace System                   used to select VORs that would need to                number of VORs (i.e., to identify initial,


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Document Created: 2018-02-08 08:01:00
Document Modified: 2018-02-08 08:01:00
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal rule; correction.
DatesThis correction is effective on July 26, 2016.
ContactFor technical questions concerning this action, contact Mike Dostert, Propulsion and Mechanical Systems Branch, ANM-112, Transport Airplane Directorate, Aircraft Certification Service, Federal Aviation Administration, 1601 Lind Ave. SW., Renton, WA 98057-3356; telephone (425) 227-2132; facsimile (425) 227 1149; email [email protected]
FR Citation81 FR 48693 
RIN Number2120-AK30
CFR Citation14 CFR 121
14 CFR 129
14 CFR 25

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