Fuel Tank Ignition Mitigation System

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Easy to install low-cost alternative to expensive OEM nitrogen inerting systems.

Proven military technology for reliable, low-maintenance FTFR compliance.  

Introducing AerSale’s cost-saving solution to meet the FAA’s latest fuel tank flammability mitigation requirements.

FTFR Background

The FAA’s published Fuel Tank Flammability Reduction Rule (FTFR) mandates that operators of transport category aircraft must take measures to mitigate the possibility of fuel tank vapor ignition in certain aircraft models. To avoid being grounded all affected passenger aircraft flying within or into the United States under FAR Part 121 operations must be equipped with an FAA approved fuel tank migration means in order to meet the FTFR mandate, and effected aircraft models include the Airbus 319, 320, 321 and Boeing 767 and 737.

AerSafe Development

To meet FTFR requirements

(ref: FAA Advisory Circular 120-98A), OEMs offer nitrogen inerting systems for their aircraft, however these systems are expensive to purchase and maintain. AerSale recognized the opportunity to develop an Engineered Solution to comply with FTFR requirements, and we are proud of our engineers and technicians who have successfully brought “AerSafe” to market as safe, reliable and low-cost FTFR means of compliance.

AerSafe works by installing non-mechanical fuel tank formed inserts that limit the amount of available oxygen that can potentially ignite fuel vapors. AerSafe incorporates a proven military anti-flammability technology, which we have configured to meet the fuel tank cavity tolerances of Airbus A319, A320 and A321 series and Boeing 767, 737 NG, and 737 Classic series aircraft.

Benefits of AerSafe

Our AerSafe customers have already saved millions by avoiding the purchase of expensive OEM inerting systems to meet current FTFR requirements for their portfolio aircraft, and we invite you to speak with an AerSale representative about how AerSafe can also help save your organization time and money.


  • Delivered as a complete prefabricated kit for easy installation
  • Can be installed over-night at hangars worldwide
  • Post installation AerSafe is virtually maintenance-free
  • No mechanical parts to potentially fail
  • No hard-time or life-limited components to replace
  • No kit post-installation flight test requirements
  • No Air Separator Module (ASM) - Avoids potential ASM failure due to high ozone level exposure
  • Full compliance with Notice of Proposed Rulemaking (NPRM) No. FAA-2016-6139
  • Aircraft can be AerSafe modified, and de-modified without any aircraft structural changes

AerSafe Applicability

Passenger aircraft operating under 14 CFR Parts 121, 125, and 129 that must meet the FTFR rule. (see: FAA Advisory Circular 120-98A)

  • Airbus A319 - FAA Supplemental Type Certificate (STC) No. ST04010NY, EASA STC No. 10067871, and ANAC STC No. 2018S06-11
  • Airbus A320 - FAA STC No. ST04010NY, EASA STC No. 10068013, and ANAC STC No. 2018S06-11
  • Airbus A321 - FAA STC No. ST04010NY, EASA STC No. 10067871, and ANAC STC No. 2018S06-11
  • Boeing 767 Series - FAA STC No. ST03599NY
  • Boeing 737 NG Series - FAA STC No. ST02980NY, EASA STC No. 10068542, ANAC STC No. 2019ST05-13, and Mexico DGAC No. IA-638/2019
  • Boeing 737 Classic Series - FAA STC No. ST03589NY and ANAC STC No. 2017S05-06
  • Boeing 777-200ER/777-300 Series - FAA STC (in-work, 4Q 2020)