ARP6912 released to support certification

SAE’s S-12 committee on Powered Lift Propulsion has released ARP6912—Substantiation of Power Available and Inlet Distortion Compliance for Rotorcraft Engine Inlet Barrier Filter Installations. 

Inlet Barrier Filters remove fine airborne particles and contaminants that can harm a helicopter’s engine. These filter types greatly extend engine life and reduce both maintenance action and related costs.  

ARP6912 provides various acceptable methods to establish power available and/or distortion characteristics while considering various scenarios that can be encountered in practice by both Type Certificate (TC) and Supplementary Type Certificate (STC) applicants. 

ARP6912 was developed in response to a Federal Aviation Administration (FAA) Tasking Request to create an Aerospace Recommended Practice that provides effective means to determine and verify available power within an engine. ARP6912 also helps substantiate that engine inlet distortion limits have not been exceeded by the modification of a rotorcraft to include an Inlet Barrier Filter System.  

Tom Newman, Director of Rotorcraft Business Units at Donaldson Filtration Solutions, emphasized the important role this document will play in advancing future filtration systems. 

“ARP6912 provides much needed clarity for IBF Supplemental Type Certification. It provides a road map to help STC applicants navigate the certification of IBF systems, and will prove to be a useful tool in the development of future rotorcraft IBF technology,” Tom said. 

Members of the S-12 Committee provide a leading voice in the development of helicopter technology, and ARP6912 serves as further testament to the committee’s hard work. 

“I’m really proud of our team, our document sponsors, and sub-committee leads who drove this effort to the finish line. This was no easy task, considering all the possible scenarios involved, especially for supplementary type certificate applicants. Our committee hopes that this document will truly facilitate further collaboration within the rotorcraft industry,” S-12 Committee Chair M. Drolet said.  

S-12 will continue development on 14 current works in progress and will next meet in conjunction with HeliExpo in February 2024 in Anaheim, California, USA.  

The committee welcomes new participation from across the rotorcraft community. 

Contact Lisa Brown at for more details. 

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