(2) The person installs Flammability Impact Mitigation Means (FIMM), if applicable, that is approved by the responsible Aircraft Certification Service office. The means must provide data affecting FRM reliability, such as component failures. Effective Date: 03/06/1995 Document Type: Rule Document Citation: 60 FR 6616 Page: 6616-6629 (14 pages) CFR: 14 CFR 25 14 CFR 121 14 CFR 135 Agency/Docket Number: The effects of airplane component failures on FRM reliability must be assessed on an on-going basis. The analysis must consider the following conditions. a. (a) Reliability indications must be provided to identify failures of the FRM that would otherwise be latent and whose identification is necessary to ensure the fuel tank with an FRM meets the fleet average flammability exposure requirements listed in paragraph M25.1 of this appendix, including when the FRM is inoperative. § 26.35 Changes to type certificates affecting fuel tank flammability (a) Applicability. RELATED FAR SECTIONS. (2) For the ground and takeoff/climb phases of flight, the average flammability exposure must be calculated by dividing the time during the specific flight phase the fuel tank is flammable by the total time of the specific flight phase. The Vertical Bunsen Burner test is used by the aerospace/aviation industry to determine the resistance of cabin and cargo compartment materials to a flame applied for either 12- or 60-seconds. For purposes of this subpart - (a) Fleet Average Flammability Exposure has the meaning defined in Appendix N of part 25 of this chapter. This AC also defines certain terms used in the FAR, in the context of these requirements. (b) The applicant must validate that the FRM meets the requirements of paragraph M25.1 of this appendix with any airplane or engine configuration affecting the performance of the FRM for which approval is sought. This proposed amendment would eliminate and modify certain flammability and fire protection requirements of title 14, Code of Federal Regulations (14 CFR) part 25. (1) Flammability Reduction Means (FRM). This section applies to holders and applicants for approvals of the following design changes to any airplane subject to 14 CFR … (i) Fuel tanks that are designed to be Normally Emptied must meet the flammability exposure criteria of Appendix M of part 25 of this chapter if any portion of the tank is located within the fuselage contour. ( NFPA130) APPLICABILITY. (b) The Fleet Average Flammability Exposure, as defined in Appendix N of this part, of each fuel tank may not exceed 3 percent of the portion of the FEET occurring during either ground or takeoff/climb phases of flight during warm days. {'United States Code': [{'Title': '49', 'Section': '106', 'headtext': ' Federal Aviation Administration', 'cleanpath': '/uscode/text/49/106'}, {'Title': '49', 'Section': '40113', 'headtext': ' Administrative', 'cleanpath': '/uscode/text/49/40113'}, {'Title': '49', 'Section': '44701', 'headtext': ' General requirements', 'cleanpath': '/uscode/text/49/44701'}, {'Title': '49', 'Section': '44702', 'headtext': ' Issuance of certificates', 'cleanpath': '/uscode/text/49/44702'}, {'Title': '49', 'Section': '44704', 'headtext': ' Type certificates, production certificates, airworthiness certificates, and design and production organization certificates', 'cleanpath': '/uscode/text/49/44704'}], 'Statutes at Large': [], 'Public Laws': [], 'Presidential Documents': []}, Electronic Code of Federal Regulations (e-CFR), Chapter I. These procedures must be included in the instructions for continued airworthiness (ICA). M25.3 Reliability indications and maintenance access. 25.853-1 - Flammability Requirements for Aircraft Seat Cushions Date Issued September 17, 1986 Responsible Office ANM-110 Description Provides guidance material for demonstrating compliance with the Federal Aviation Regulations (FAR) pertaining to flammability of aircraft seat cushions. 14 CFR 25, Appendix F, Part I (vertical test) ASTM E662 Standard Test Method for Specific Optical Density of Smoke Generated by Solid Materials. § 25.853 Compartment interiors. (a) If FRM is used to comply with paragraph M25.1 of this appendix, Airworthiness Limitations must be identified for all maintenance or inspection tasks required to identify failures of components within the FRM that are needed to meet paragraph M25.1 of this appendix. CFR ; prev next Appendix F to Part 25 Part I - Test Criteria and Procedures for Showing Compliance With § 25.853 or § 25.855 (a) Material test criteria - ... Part II - Flammability of Seat Cushions (a) Criteria for Acceptance. © A means must be provided to reduce the fuel tank flammability. (b) Normally Emptied means a fuel tank other than a Main Fuel Tank. This policy statement provides guidance on acceptable methods of compliance with the flammability requirements of Title 14, Code of Federal Regulations (14 CFR) part 25 for commonly constructed parts, construction details, and materials. A means must be provided to reduce the fuel tank flammability. (a) The applicant must provide data from analysis, ground testing, and flight testing, or any combination of these, that: (1) Validate the parameters used in the analysis required by paragraph M25.1 of this appendix; (2) Substantiate that the FRM is effective at limiting flammability exposure in all compartments of each tank for which the FRM is used to show compliance with paragraph M25.1 of this appendix; and. Title 14 Part 25 of the Electronic Code of Federal Regulations. pertaining to flammability of aircraft seat cushions. 14 CFR 23, Appendix F, Part I(d) 14 CFR 25, Appendix F, Part I(b)(4) PS-ANM-25.853-01- R2. (a) Applicability. FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION, Special Federal Aviation Regulation No. This guidance applies to airplanes required to comply with § 25.856, and part VI of appendix F to Title 14 Code of Federal Regulations (14 CFR) part 25. From the Code of Federal Regulations (CFR): 14 CFR Part 25.853. FT≤ 10 sec; BL ≤ 6 in. § 25.863 Flammable fluid fire protection. Improved Flammability Standards for Materials Used in the Interiors of Federal Aviation Administration Dates: March 6, 1995. Main Fuel Tank is defined in 14 CFR 25.981(b). Smaller than 6.35 mm (0.25”) Dia. (a) Fleet Average Flammability Exposure has the meaning defined in Appendix N of part 25 of this chapter. 14 CFR 25.853 (a), (c) and (d) dealing with Part 25 aircraft seat flammability requirements in layman terms. 13, Special Federal Aviation Regulation No. 25.863 Flammable fluid fire protection. Main Fuel Tank is defined in 14 CFR 25.981(b). Appendix N to Part 25 - Fuel Tank Flammability Exposure and Reliability Analysis: 14:1.0.1.3.12.12.121.1.20: APPENDIX Appendix O Airworthiness limitations and procedures. 25.853 Compartment interiors. For each compartment occupied by the crew or passengers, the following apply: (a) Materials (including finishes or decorative surfaces applied to the materials) must meet the applicable test criteria prescribed in part I of appendix F of this part, or other approved equivalent methods, regardless of the passenger capacity of the airplane . determine the flammability and flame propagation characteristics of thermal/acoustic insulation materials. (d) Except as provided in paragraph (e) of this section, the following interior components of airplanes with passenger capacities of 20 or more must also meet the test requirements of parts IV and V of appendix F of this part, or other approved equivalent method, in addition to the flammability requirements prescribed in paragraph (a) of this section: (1) Flammability Reduction Means (FRM). '; Toggle navigation eCFR. (a) In each area where flammable fluids or vapors might escape by leakage of a fluid system, there must be means to minimize the probability of ignition of the fluids and vapors, and the resultant hazards if ignition does occur. Summary. (b) Sufficient accessibility to FRM reliability indications must be provided for maintenance personnel or the flightcrew. Test Methods. 14 CFR 25 Vertical test – Classification of NFPA 130. (b) Normally Emptied means a fuel tank other than a Main Fuel Tank. As a portion of this 3 percent, if flammability reduction means (FRM) are used, each of the following time periods may not exceed 1.8 percent of the FEET: (1) When any FRM is operational but the fuel tank is not inert and the tank is flammable; and. Electronic Code of Federal Regulations (e-CFR), CHAPTER I - FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION, PART 25 - AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES. F to part 25, part I § (6)) (b) Unless alternative reporting procedures are approved by the responsible Aircraft Certification Service office, as defined in part 26 of this subchapter, provide a report to the FAA every six months for the first five years after service introduction. Appendix F -- Part II, of Part 25 of the FAR - Flammability of Seat Cushions. Appendix N to Part 25 - Fuel Tank Flammability Exposure and Reliability Analysis. (c) The access doors and panels to the fuel tanks with FRMs (including any tanks that communicate with a tank via a vent system), and to any other confined spaces or enclosed areas that could contain hazardous atmosphere under normal conditions or failure conditions, must be permanently stenciled, marked, or placarded to warn maintenance personnel of the possible presence of a potentially hazardous atmosphere. A means must be provided to reduce the fuel tank flammability. Page 3 Dear Valued Skandia Customer: This manual is designed to give guidance and understanding of FAA Regulations 14 CFR 25.853 (a), (c) and (d) dealing with Part 25 aircraft seat flammability requirements in layman terms. • 14 CFR 25 Appendix F, Part I Vertical test • Fire Testing to Aircraft Material - Standard • ABD 0031 Fire Test to Aircraft Material – A • BSS 7238 for Smoke Density- Fire Test to Air • BSS 7239 Toxicity Test - Boeing Standard fir • FAR 25.853 45° Flammability Test – Fire T • FAR 25.853 60° Flammability test - … After that period, continued reporting every six months may be replaced with other reliability tracking methods found acceptable to the FAA or eliminated if it is established that the reliability of the FRM meets, and will continue to meet, the exposure requirements of paragraph M25.1 of this appendix. (a) The Fleet Average Flammability Exposure of each fuel tank, as determined in accordance with Appendix N of this part, may not exceed 3 percent of the Flammability Exposure Evaluation Time (FEET), as defined in Appendix N of this part. (1) The person complies with 14 CFR 26.35 by the applicable date stated in that section. This section applies to holders and applicants for approvals of the following design changes to any airplane subject to 14 CFR 26.33(a): (1) Flammability Reduction Means (FRM). Title 14, part 25 of the Electronic Code of Federal Regulations. (e) Compliance Times for Design Changes and Service Instructions. Compartment interiors. This analysis must be conducted in accordance with Appendix N of part 25 of this chapter. As a portion of this 3 percent, if flammability reduction means (FRM) are used, each of the following time periods may … 14 CFR Appendix F to Part 25 - Appendix F to Part 25 . (3) Except in accordance with § 125.201, the FIMM… (b) Maintenance procedures must be developed to identify any hazards to be considered during maintenance of the FRM. (c) Develop service instructions or revise the applicable airplane manual, according to a schedule approved by the responsible Aircraft Certification Service office, as defined in part 26 of this subchapter, to correct any failures of the FRM that occur in service that could increase any fuel tank's Fleet Average Flammability Exposure to more than that required by paragraph M25.1 of this appendix. It is most commonly used to show compliance with 14 CFR 25.853(a). The FAA requires this test for all passenger seating on privately owned or corporate chartered aircraft. 14 CFR 25 Vertical test- Brief. § 26.35 Changes to type certificates affecting fuel tank flammability. AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES. (i) Fuel tanks that are designed to be Normally Emptied must meet the flammability exposure criteria of Appendix M of part 25 of this chapter if any portion of the tank is located within the fuselage contour. Reliability indications and maintenance access. For each compartment occupied by the crew or passengers, the following apply: Materials (including finishes or decorative surfaces applied to the materials) must meet the applicable test criteria prescribed in part I of appendix F of this part, or other approved equivalent methods, regardless of the passenger capacity of … (3) Describe the circumstances under which the FRM would not be operated during each phase of flight. 2. (2) When any FRM is inoperative and the tank is flammable. (3) Compliance with this paragraph may be shown using only those flights for which the airplane is dispatched with the flammability reduction means operational. The applicant/holder must do the following: (a) Demonstrate effective means to ensure collection of FRM reliability data. N25.1 General. The seat cushion oil burner test is one of the most complicated flammability tests. Section 25.853 of Part 25 of the FAR - Compartment Interiors. To show compliance with Title 14 CFR FAR 25.853(c), Appendix F, Part II. (i) Fuel tanks that are designed to be Normally Emptied must meet the flammability exposure criteria of Appendix M of part 25 of this chapter if any portion of the tank is located within the fuselage contour. For fuel tanks installed in aluminum wings, a qualitative assessment is sufficient if it substantiates that the tank is a conventional unheated … This manual is designed to give guidance and understanding of FAA Regulations 14 CFR 25.853 (a), (c) and (d) dealing with Part 25 aircraft seat flammability requirements in layman terms. (3) Applicants subject to paragraph (a)(3)(ii) of this section must comply with the requirements of 14 CFR 26.33. 109, Subpart C - Structure (§§ 25.301 - 25.581), Subpart D - Design and Construction (§§ 25.601 - 25.899), Subpart E - Powerplant (§§ 25.901 - 25.1207), Subpart F - Equipment (§§ 25.1301 - 25.1461), Subpart G - Operating Limitations and Information (§§ 25.1501 - 25.1587), Subpart H - Electrical Wiring Interconnection Systems (EWIS) (§§ 25.1701 - 25.1733), Subpart I - Special Federal Aviation Regulations (§ 25.1801), Appendix H to Part 25 - Instructions for Continued Airworthiness, Appendix I to Part 25 - Installation of an Automatic Takeoff Thrust Control System (ATTCS), Appendix J to Part 25 - Emergency Evacuation, Appendix K to Part 25 - Extended Operations (ETOPS), Appendix L to Part 25 - HIRF Environments and Equipment HIRF Test Levels, Appendix M to Part 25 - Fuel Tank System Flammability Reduction Means, Appendix N to Part 25 - Fuel Tank Flammability Exposure and Reliability Analysis, Appendix O to Part 25 - Supercooled Large Drop Icing Conditions, Part 25. § 25.853 Compartment interiors. (a) This appendix specifies the requirements for conducting fuel tank fleet average flammability exposure analyses required to meet § 25.981 (b) and Appendix M of this part. 26.35 Changes to type certificates affecting fuel tank flammability. M25.1 Fuel tank flammability exposure requirements. We therefore refer to “FAR 25.853”, JAR 25.853”, “JAR-25, § 25.853”, “FAR Part 25, § 25.853”, “14 CFR Part 25.853”, “CS 25.853” In order to define more detailed instructions and safety precautions, individual aircraft manufacturers have prepared their own internal documentation, all have similar content regarding FST requirements. The methods of compliance discussed in this policy apply to Amendment 25-32 and later for § 25.853(a) and Amendment 25-61 … Sphere (drop of thread lock or Nycote) Smaller than 101.6 mm x 2.286 mm (4” x .09”) dia (lacing tape) Consideration must be given when more than one small part is located in the same proximity with other small parts (one part may ignite the other part) as the combined fuel load may contribute to propagation Title 14, Code of Federal Regulations; Part # Title; Part 21: Certification Procedures for Products and Parts: Section 21.17: Designation of applicable regulations: Part 21, subpart H: Airworthiness Certificates: Part 23: Airworthiness Standards: Normal Category Airplanes: Part 25: Airworthiness Standards: Transport Category Airplanes: Part 27 2. In addition, we have included guidance for 14 CFR 25.856 and 14 CFR 23.856 testing for thermal/acoustic insulation. In addition, the proposal would extend the fire protection requirements to any extensively use… The proposed changes would organize these requirements based on the type of fire—in-flight or post-crash—that is likely to affect a given component, part, or material, rather than basing such standards on the part's composition or function. M25.1 Fuel tank flammability exposure requirements. (2) Applicants subject to paragraph (a)(2), or (a)(3)(i) of this section must comply with the requirements of 14 CFR 25.981, in effect on December 26, 2008. ü 45° flammability test: 14 FAR 25.853 (b), (App. (a) The Fleet Average Flammability Exposure of each fuel tank, as determined in accordance with Appendix N of this part, may not exceed 3 percent of the Flammability Exposure Evaluation Time (FEET), as defined in Appendix N of this part. b. a. NFPA 130 : Standard for fixed guide way transit and passenger rail systems. (1) The analysis must use the subset of those flights that begin with a sea level ground ambient temperature of 80 °F (standard day plus 21 °F atmosphere) or above, from the flammability exposure analysis done for overall performance. Appendix M to Part 25 - Fuel Tank System Flammability Reduction Means. In addition, we have included guidance for 14 CFR Appendix K to Part 25 - Extended Operations (ETOPS) Appendix L to Part 25 - HIRF Environments and Equipment HIRF Test Levels Appendix M to Part 25 - Fuel Tank System Flammability Reduction Means M25.4 Airworthiness limitations and procedures. 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