Maintenance and Modifications
Inlet Barrier Filter Policy Raises Industry Concerns
The FAA says the increased usage of the systems necessitates standardized installations.

A new policy proposal on engine inlet barrier filters (IBFs) is raising fears that the requirements could spell the end of future development of the filters. The FAA recently released the draft policy—PS-ASW-27-29-07—clarifying the requirements for approval of installation of IBFs. The FAA said the policy is necessary because “the increased usage of …IBF installations on rotorcraft requires guidance to ensure safe and standardized installations.”