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Possibly, the problem with the gear not coming down will track back to the
dump valve.  I had the same problem of the gear not coming down.  This is a
little disconcerting to the low time Lancair pilot - first time it happened
to me was on the fourth flight.

The original dump valve supplied by Lancair was not up to the pressures
required of it.  My theory is that the high pressure leaks down to the low
pressure side and pressurizes the low switch.  When you go to put the gear
down the low pressure switch is already at or above the limit and does not
start the pump.

Anyway, I found out that Lancair had a new higher rated dump valve which
they sold at their cost.  The installation was relatively painless.  Bottom
line is I haven't had a "gear won't come down" experience since  (50 hrs).

Hal Woodruff

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Please send your photos and drawings to marvkaye@olsusa.com.
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