The Federal Aviation Administration (FAA) has issued a Supplemental Type Certificate (STC) to AerSale® for installation of its AerSafe system on Airbus 321 aircraft (ST04010NY) in compliance with the Fuel Tank Flammability Reduction (FTFR) rule. The European Aviation Safety Agency (EASA) has also approved AerSafe on Airbus 321 aircraft (10065226) as a Flammability Reduction System (FRS).
This new STC is in addition to AerSale’s STCs for the Boeing 767 series (ST03599NY), approved by the FAA in February 2018, as well as the Boeing 737 CL series (ST03589NY) and the Boeing 737 NG series (ST02980NY), both approved in 2016.
Tested and developed to exact tolerances to fill the cavity of the Airbus 321 center fuel tanks, AerSafe limits the amount of available oxygen that can ignite fuel vapors and prevents sparks from igniting an explosion. AerSafe comes as a complete prefabricated kit that can be installed at any hangar around the world. After initial installation, the system requires no maintenance or spare parts.
The FAA enacted the FTFR rule after the crash of TWA flight 800 off the coast of New York. Federal investigations revealed that the accident was the result of an explosion caused by a spark igniting fumes in the center fuel tank of the Boeing 747. The FTFR rule requires fuel tank ignition sources and flammability exposure to be reduced in aircraft most at risk. The FAA gave two options: a flammability reduction means such as nitrogen inerting, or an ignition mitigation means such as AerSafe. These systems must be installed on all passenger aircraft that have high flammability fuel tanks and fly within or into the United States.
