Swapped from clip-on ferrites to integrated filters on a King Air 200 last month

I used to just slap clip-on ferrites on every noisy wire I found, especially on the audio panel lines. Took me nearly a full day to dress and secure three bundles on a recent C90B. Then a senior guy showed me the EMC filters built right into the shielded connectors from Amphenol. No more fighting with loose ferrites that slide around during flight. Installation time dropped to maybe 2 hours for the same job. Has anyone else made the switch to those integrated types for interference on older airframes?

3 comments

3 Comments

erickelly19d ago

Man that is a solid upgrade. Two hours is life changing compared to a full day of messing with those loose ferrites. We had one slide right off a nav wire during a bumpy approach last year and it killed the audio for the rest of the flight. Those Amphenol connectors with the built in filters sound like the kind of fix that makes you wonder why it took so long to exist.

marybutler19d ago

Wow, really? That is pretty wild to hear. I have been fighting with those clip-on ferrites for years on our old King Airs and they always seem to work themselves loose after a few rough landings. It is kind of shocking someone actually found a proper solution like those integrated filters you are talking about. I would love to see the part number if you have it handy, because fiddling with those loose ferrites is driving me crazy. Two hours is a dream compared to the full day I usually spend doing that work.

nancy_king2919d ago

Jumping on this because I feel your pain @marybutler. I once spent two hours trying to get a clip-on ferrite to stay put, only to have it fall off during taxi. The part number for those integrated filters is 832-1234-5678, and they come with built-in strain relief so they don't wiggle loose. Two hours for the whole job is still way better than a day of wrestling with those old clunky ones, right?