I have had similar problems
with both the Bendix mags
and the Unison mags, but less so with the Unison. Use
only Unison now, as it seems to be the more reliable of the two. Pressurizing mags is an inexact science (note there is usually only one
bleed air from the bottom of one of the mags—I think the
right—and most of the corrosion I have seen is on that mag,
with both systems). I talked to Unison a while back—between the thin air and arcing
risk and the constant/frequent transitions we put these mags
through between high dry and low moist air, our flight regime is particularly
hard on these components (much more so than on low fliers).
And no, you don’t need to
remove any of the plumbing to change out or inspect the mags.
Doug
Douglas W. Johnson, MD PA
8265 Riding Club Road
Jacksonville, FL 32256
(904) 642-6016 phone
(904) 202-7020 fax
Lancair1@bellsouth.net
www.frogdocs.com
* Is this a common
problem, have others experienced issues or failures with the 6310 mags?
* Does anyone
(including Unison) have a clue as to what might be causing these
pre-mature failures?
* The service
bulletin states that when you change a mag or update it, you then pull it again
and again to re-inspect it. That looks like a LOT of work. With the
upper deck induction and fuel injection on this engine, does ALL that have to
be removed to pull a mag or can you somehow slide it out with at least some of
that in place?
* Any further
information or experiences would be greatly appreciated.
Thanks again John
and Tom!!