( NFPA130) 14 CFR 25, Appendix F, Part I (vertical test) ASTM E662 Standard Test Method for Specific Optical Density of Smoke Generated by Solid Materials. The effects of airplane component failures on FRM reliability must be assessed on an on-going basis. These procedures must be included in the instructions for continued airworthiness (ICA). (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. (1) The person complies with 14 CFR 26.35 by the applicable date stated in that section. (3) Compliance with this paragraph may be shown using only those flights for which the airplane is dispatched with the flammability reduction means operational. 2. Smaller than 6.35 mm (0.25”) Dia. 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. 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. Appendix M to Part 25 - Fuel Tank System Flammability Reduction Means. (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. § 26.35 Changes to type certificates affecting fuel tank flammability (a) Applicability. (2) The person installs Flammability Impact Mitigation Means (FIMM), if applicable, that is approved by the responsible Aircraft Certification Service office. This section applies to holders and applicants for approvals of the following design changes to any airplane subject to 14 CFR … § 25.853 Compartment interiors. • 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 - … The seat cushion oil burner test is one of the most complicated flammability tests. (e) Compliance Times for Design Changes and Service Instructions. (b) Normally Emptied means a fuel tank other than a Main Fuel Tank. PS-ANM-25.853-01- R2. a. M25.1 Fuel tank flammability exposure requirements. 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 For purposes of this subpart - (a) Fleet Average Flammability Exposure has the meaning defined in Appendix N of part 25 of this chapter. NFPA 130 : Standard for fixed guide way transit and passenger rail systems. (1) Flammability Reduction Means (FRM). (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. Fuel tank flammability exposure requirements. (3) Applicants subject to paragraph (a)(3)(ii) of this section must comply with the requirements of 14 CFR 26.33. Summary. APPLICABILITY. (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. Test Methods. 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. (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. (b) Normally Emptied means a fuel tank other than a Main Fuel Tank. Title 14 Part 25 of the Electronic Code of Federal Regulations. 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. (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. § 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 … (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. Appendix F -- Part II, of Part 25 of the FAR - Flammability of Seat Cushions. 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