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. (2) When any FRM is inoperative and the tank is flammable. 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. FT≤ 10 sec; BL ≤ 6 in. In addition, we have included guidance for 14 CFR 25.856 and 14 CFR 23.856 testing for thermal/acoustic insulation. For purposes of this subpart - (a) Fleet Average Flammability Exposure has the meaning defined in Appendix N of part 25 of this chapter. ü 45° flammability test: 14 FAR 25.853 (b), (App. 2. determine the flammability and flame propagation characteristics of thermal/acoustic insulation materials. 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 (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) 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. (3) Except in accordance with § 125.201, the FIMM… The applicant/holder must do the following: (a) Demonstrate effective means to ensure collection of FRM reliability data. (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. Main Fuel Tank is defined in 14 CFR 25.981(b). (i) Holders of supplemental type certificates and field approvals: Within 12 months of December 26, 2008, (ii) Applicants for supplemental type certificates and for amendments to type certificates: Within 12 months after December 26, 2008, or before the certificate is issued, whichever occurs later. Compartment interiors. These procedures must be included in the instructions for continued airworthiness (ICA). 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 … The effects of airplane component failures on FRM reliability must be assessed on an on-going basis. Title 14, part 25 of the Electronic Code of Federal Regulations. (2) The person installs Flammability Impact Mitigation Means (FIMM), if applicable, that is approved by the responsible Aircraft Certification Service office. 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. 14 CFR 25, Appendix F, Part I (vertical test) ASTM E662 Standard Test Method for Specific Optical Density of Smoke Generated 14 CFR 25 Vertical test – Classification of NFPA 130 FT≤ 10 sec; BL ≤ … 13, Special Federal Aviation Regulation No. APPLICABILITY. F to part 25, part I § (6)) § 25.863 Flammable fluid fire protection. 26.35 Changes to type certificates affecting fuel tank flammability. PS-ANM-25.853-01- R2. Title 14 Part 25 of the Electronic Code of Federal Regulations. (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. (3) Describe the circumstances under which the FRM would not be operated during each phase of flight. (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. (1) The person complies with 14 CFR 26.35 by the applicable date stated in that section. § 25.853 Compartment interiors. This section applies to holders and applicants for approvals of the following design changes to any airplane subject to 14 CFR … Smaller than 6.35 mm (0.25”) Dia. b. 2. RELATED FAR SECTIONS. (b) Maintenance procedures must be developed to identify any hazards to be considered during maintenance of the FRM. 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 (1) Flammability Reduction Means (FRM). a. (b) Normally Emptied means a fuel tank other than a Main Fuel Tank. (a) Fleet Average Flammability Exposure has the meaning defined in Appendix N of part 25 of this chapter. Summary. (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. (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. 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 (1) Flammability Reduction Means (FRM). 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: NFPA 130 : Standard for fixed guide way transit and passenger rail systems. (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. Main Fuel Tank is defined in 14 CFR 25.981(b). 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. (3) Applicants subject to paragraph (a)(3)(ii) of this section must comply with the requirements of 14 CFR 26.33. 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. § 26.35 Changes to type certificates affecting fuel tank flammability. 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. N25.1 General. The analysis must consider the following conditions. Section 25.853 of Part 25 of the FAR - Compartment Interiors. 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. 25.863 Flammable fluid fire protection. The FAA requires this test for all passenger seating on privately owned or corporate chartered aircraft. A means must be provided to reduce the fuel tank flammability. {'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. From the Code of Federal Regulations (CFR): 14 CFR Part 25.853. 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