Heat Release Rate (OSU)*

The Heat Release Rate (OSU) test is used to determine the heat release rates of cabin materials when exposed to radiant heat.

Test Procedures

  • 14 CFR 23, Appendix F, Part IV
  • FAA Fire Test Handbook, Chapter 5
  • BSS 7322

*Tested at our partner lab


Test Description

A test sample is placed vertically into a chamber with a constant flow of air. A radiant heat source is applied to the exposed surface of the sample. The changes in temperature of the gas are monitored and recorded. The pass/fail criteria is based on the heat release rate calculated from this data.

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

    • FAR 25: 25.853(d)

What Products Require This Test?

The following products typically require the Heat Release Rate (OSU) test.

    • Interior Ceiling and Wall panels
    • Partitions
    • Galley Structure
    • Large Cabinets and Cabin Stowage Compartments