A New Way of Flight Training⦠- American Bonanza Society
A New Way of Flight Training⦠- American Bonanza Society
A New Way of Flight Training⦠- American Bonanza Society
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www.bonanza.org<br />
JPI<br />
troubleshooting<br />
David Gates<br />
Marana, Arizona<br />
I have an S35. A new IO-550B<br />
Q. was installed three years ago,<br />
and a new JPI EDM 700 was installed<br />
at the same time. Not long after the<br />
install I noticed that engaging gear<br />
down or flaps etc. would cause the<br />
EDM to reboot. There were no other<br />
signs <strong>of</strong> problems. The problem has<br />
worsened. Engaging almost any<br />
accessory causes the EDM to reboot.<br />
The A&P checked voltages and all<br />
were good. He checked the ground<br />
and it was fine. He changed the hot<br />
lead from the avionics buss to the main<br />
buss, but there was no improvement.<br />
A new sealed battery was installed. He<br />
put in a new voltage regulator. He said<br />
that although voltages were correct,<br />
the alternator was going <strong>of</strong>f-line from<br />
time to time. He says now that the<br />
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new regulator has cured the alternator<br />
drop-<strong>of</strong>f but not the EDM shutdown/<br />
reboot. He is now sending the EDM<br />
back to JPI for bench check. Does<br />
this all make sense I had not noted<br />
any indication <strong>of</strong> alternator drop-<strong>of</strong>f,<br />
or any other electrical anomaly for<br />
that matter. Can you think <strong>of</strong> anything<br />
else to check<br />
I would also suspect the electrical<br />
A. buss voltage doing a fluctuation<br />
that exceeded the JPI limits. I would<br />
check all grounds from battery to<br />
engine to airframe to check total<br />
value. —NP<br />
V-Tail<br />
speed restriction<br />
William Greene<br />
San Angelo, Texas<br />
Is there an AD regarding speed<br />
Q. restriction because <strong>of</strong> the tail<br />
on my 1947 <strong>Bonanza</strong>, and if so what<br />
is it<br />
AD 2002-21-13 put a temporary<br />
A. airspeed restriction <strong>of</strong> 144 mph<br />
(125 KIAS) on 1947-1950 <strong>Bonanza</strong>s<br />
until a full fuselage skin thickness<br />
and empennage inspection was<br />
complete and any necessary repairs<br />
were made. The speed restriction<br />
was lifted when an individual airplane<br />
was fully compliant with these<br />
requirements. All inspections and<br />
repairs must have been completed<br />
before December 10, 2005, or the<br />
airplane was no longer permitted<br />
to be flown. Any airplane not<br />
compliant with AD 2002-21-13<br />
would now need to have an FAA<br />
Special <strong>Flight</strong> Permit (ferry permit)<br />
if it must be flown to a location<br />
for inspection and any needed<br />
repairs. There’s a one-page synop -<br />
sis <strong>of</strong> AD 2002-21-13 compliance<br />
require ments in the V-Tail Fact<br />
Sheet on the Maintenance & Operations<br />
page for your <strong>Bonanza</strong> in the<br />
Members Only section <strong>of</strong> the ABS<br />
website. —TT<br />
60 AMERICAN BONANZA SOCIETY JANUARY 2012
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