Lonestar Filter 100 Amp FAA / PMA

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Part# 11-04850
MFR Model# LS03-01022


Lone Star Aviation’s 100 amp filter (FEED THRU) (Fail Safe Design) attenuates both low and high frequency, (10hz to 30 mhz) of EMI-RFI noise generated from the aircraft’s alternator systems to the aircraft’s dc buss. This noise interference travels from the a/c buss to critical on board GPS navigation, RF, audio, storm scope systems. This filter, (100 amp Fail Safe design) is used by OEM aircraft manufacturers to attenuate 100% of the on board noise before it penetrates the aircraft’s dc buss. The filter is FAA- PMA pending for certificated aircraft but can be used on experimental aircraft

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No whining radio anymore. But there was two broken wires from the stator which was then replaced - maybe that was the reason! :-) This filter is a bit pricy!

Thomas S
October 24, 2019


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is this unit FAA/PMA now seeing the website for the manufacture says that it is?

Yes, this filter is FAA / PMA.

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