Powerplant Fire Penetration

The Powerplant Fire Penetration test is used to determine the capability of components and constructions to control the passage of fire in powerplant (engine) compartments.

Test Procedures

  • FAA Fire Test Handbook, Chapter 12
  • AC 20-135
  • BSS 7338
Powerplant

Test Description

A test sample is exposed to a high-intensity 2,000° open flame for 5 minutes (fire resistant) or 15 minutes (fireproof). The pass/fail criteria for panels is based on flame penetration and backside burning. The pass/fail criteria for other components and equipment is based on continued operation after flame application.

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

    • FAR 23: 23.859, 23.1103, 23.1121, 23.1123, 23.1182, 23.1183, 23.1189, 23.1191, 23.1193, 23.1201
    • FAR 25: 25.859, 25.1103, 25.1121, 25.1183, 25.1189, 25.1191, 25.1193, 25.1201
    • FAR 27: 27.859, 27.861, 27.1183, 27.1189, 27.1191, 27.1193
    • FAR 29: 29.859, 29.861, 29.1103, 29.1121, 29.1183, 29.1189, 29.1191, 29.1193, 29.1201

What Products Require This Test?

The following products typically require the Powerplant Fire Penetration test.

    • Engine Compartment System Components
    • Cowlings
    • Nacelles
    • Firewalls
    • Lines, Fittings, and Components (carrying flammable fluid)
    • + more