45-degree Burn

The 45-degree Bunsen Burner test is used to determine the resistance of cargo compartment materials to flame penetration with a flame applied for 30-seconds.

Test Procedures

  • 14 CFR 23, Appendix F, Part I(f)
  • 14 CFR 25, Appendix F, Part I(b)(6)
  • FAA Fire Test Handbook, Chapter 2
  • BSS 7230-F5
45 deg

Test Description

A test sample is aligned at 45° and exposed to a small Bunsen burner flame at its center. The flame is applied for 30 seconds and then pulled away from the sample. If the sample continues to flame, this flame time is recorded along with any glowing that may occur after the flame extinguishes. The flame may not penetrate the test sample. The pass/fail criteria is based on flame penetration and the flame time and glow time averaged across three test samples.

This test is typically used to show compliance with the following Federal Aviation Regulations (FARs):

    • FAR 23: 23.855(c)
    • FAR 25: 25.855(d)

What Products Require This Test?

The following products typically require the 45-degree Burn test.

    • Cargo/Baggage Compartment Liners
    • Cargo/Baggage Compartment Flooring