As the leader in lithium-ion battery fire containment, all HOT-STOP ‘L’ Kits are Burn Certified and tested at an FAA-Registered Laboratory. In addition, all HOT-STOP ‘L’ products have also received the ultimate FIREPROOF designation as defined by 14 CFR 1.1 with the FAA (AC20-135). See our TESTING page for full reports and videos.
This designation sets HOT-STOP ‘L’ Kits apart from other products and assures customers that our containment solution has successfully completed the most rigorous testing to achieve FIREPROOF status and protect them from the threat of lithium-ion battery fires.
The Powerplant Fire Penetration test is used to demonstrate compliance with the aircraft powerplant (i.e. engine) fire protection requirements of the FAA. There are two types of fire protection designations as defined by 14 CFR 1.1:
Fire Resistant: the capacity to withstand the heat associated with fire at least as well as aluminum alloy in dimensions appropriate for the purpose for which they are used.
Fireproof: the capacity to withstand the heat associated with fire at least as well as steel in dimensions appropriate for the purpose for which they are used. The standard test used to determine the fire protection designations is detailed in FAA Advisory Circular (AC) No. 20-135, titled “Powerplant Installation and Propulsion System Component Fire Protection Test Methods, Standards, and Criteria” and DOT/FAA/AR-00/12; Chapter 12, titled “Aircraft Materials Fire Test Handbook; Powerplant Fire Penetration Test”.
The test utilizes a modified gun-type oil burner which is calibrated to provide a high-intensity flame with a minimum average flame temperature of 2,000 °F and minimum heat transfer rate of 4,500 BTU/hr or 9.3 BTU/ft2-sec.
The sample under test must withstand this high-intensity flame for either five minutes to be designated “Fire Resistant” or fifteen minutes to be designated “Fireproof”.
The HOT-STOP® 'L' Fire Containment Kit successfully prevented the high-intensity flame from penetrating through its wall. The Containment Kit passed the five-minute Fire-Resistant test, the fifteen minute FireProof test, and the extended 30 minute test! Following the results of this testing, the HOT-STOP® 'L' Fire Containment Kit can be considered Fireproof as defined by the Code of Federal Regulations (14 CFR 1.1) and as demonstrated by the Federal Aviation Administration’s (AC 20-135) test procedure. Based on the 14 CFR 1.1 definition of FireProof, the HOT-STOP® 'L' Fire Containment Kit has the capacity to withstand the heat associated with fire at least as well as steel in dimensions appropriate for the purpose for which it is used (14 CFR 1.1).
HOT-STOP ‘L’ products pass Vertical Flammability Testing as defined the FAA 14 CFR Part 25.853 Appendix F