§ 26.35 Changes to type certificates affecting fuel tank flammability (a) Applicability. '; Toggle navigation eCFR. Fuel tank flammability exposure requirements. 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 The applicant/holder must do the following: (a) Demonstrate effective means to ensure collection of FRM reliability data. (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. (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: 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 . § 25.863 Flammable fluid fire protection. These procedures must be included in the instructions for continued airworthiness (ICA). (1) Flammability Reduction Means (FRM). Appendix F -- Part II, of Part 25 of the FAR - Flammability of Seat Cushions. Summary. In addition, the proposal would extend the fire protection requirements to any extensively use… Smaller than 6.35 mm (0.25”) Dia. The effects of airplane component failures on FRM reliability must be assessed on an on-going basis. (b) Normally Emptied means a fuel tank other than a Main Fuel Tank. 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. FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION, Special Federal Aviation Regulation No. 14 CFR 25 Vertical test – Classification of NFPA 130. This proposed amendment would eliminate and modify certain flammability and fire protection requirements of title 14, Code of Federal Regulations (14 CFR) part 25. (b) Normally Emptied means a fuel tank other than a Main Fuel Tank. 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 … 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. determine the flammability and flame propagation characteristics of thermal/acoustic insulation materials. (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. (e) Compliance Times for Design Changes and Service Instructions. For fuel tanks installed in aluminum wings, a qualitative assessment is sufficient if it substantiates that the tank is a conventional unheated … The means must provide data affecting FRM reliability, such as component failures. (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. Main Fuel Tank is defined in 14 CFR 25.981(b). (3) Describe the circumstances under which the FRM would not be operated during each phase of flight. M25.1 Fuel tank flammability exposure requirements. The FAA requires this test for all passenger seating on privately owned or corporate chartered aircraft. 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. Section 25.853 of Part 25 of the FAR - Compartment Interiors. Title 14 Part 25 of the Electronic Code of Federal Regulations. ü 45° flammability test: 14 FAR 25.853 (b), (App. (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. 26.35 Changes to type certificates affecting fuel tank flammability. 14 CFR 23, Appendix F, Part I(d) 14 CFR 25, Appendix F, Part I(b)(4) Test Methods. 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. (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. (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. © M25.3 Reliability indications and maintenance access. (a) Applicability. A means must be provided to reduce the fuel tank flammability. 25.863 Flammable fluid fire protection. (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. 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 14 CFR 25 Vertical test- Brief. (2) When any FRM is inoperative and the tank is flammable. 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. 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. ( NFPA130) From the Code of Federal Regulations (CFR): 14 CFR Part 25.853. 2. This analysis must be conducted in accordance with Appendix N of part 25 of this chapter. N25.1 General. In addition, we have included guidance for 14 CFR 25.856 and 14 CFR 23.856 testing for thermal/acoustic insulation. • 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 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. 14 CFR 25.853 (a), (c) and (d) dealing with Part 25 aircraft seat flammability requirements in layman terms. § 25.853 Compartment interiors. (b) Sufficient accessibility to FRM reliability indications must be provided for maintenance personnel or the flightcrew. Reliability indications and maintenance access. The analysis must consider the following conditions. 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. M25.1 Fuel tank flammability exposure requirements. M25.4 Airworthiness limitations and procedures. (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. This AC also defines certain terms used in the FAR, in the context of these requirements. F to part 25, part I § (6)) (1) Flammability Reduction Means (FRM). Compartment interiors. This section applies to holders and applicants for approvals of the following design changes to any airplane subject to 14 CFR … Appendix N to Part 25 - Fuel Tank Flammability Exposure and Reliability Analysis. To show compliance with Title 14 CFR FAR 25.853(c), Appendix F, Part II. (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 M to Part 25 - Fuel Tank System Flammability Reduction Means. (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. (3) Except in accordance with § 125.201, the FIMM… § 26.35 Changes to type certificates affecting fuel tank flammability. 2. (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. 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. (1) Flammability Reduction Means (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. (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. (b) Maintenance procedures must be developed to identify any hazards to be considered during maintenance of the FRM. (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. 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: 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. Show compliance with title 14 CFR 23.856 testing for thermal/acoustic insulation Regulation No Exposure and reliability Analysis::. ) Fleet Average flammability Exposure has the meaning defined in 14 CFR 25 test! 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