Testing the Beech electrically driven back-up pneumatic pump
is part of the take-off check list, the pump should be run
for a minute on every flight and not allowed to sit idle and
freeze solid.

But that Sporty's backup looks very good, almost like the
models used in the jets, except the jet units have a
built-in battery that will run nothing else, but keep the
gyro erect for at least 30 minutes after everything else has
died.


--
James H. Macklin
ATP,CFI,A&P

--
The people think the Constitution protects their rights;
But government sees it as an obstacle to be overcome.
some support
http://www.usdoj.gov/olc/secondamendment2.htm
See http://www.fija.org/ more about your rights and duties.


"Marco Leon" mmleon(at)yahoo.com wrote in message
...
| Glad to hear about the good outcome. Given the dual vacuum
failure, have you
| considered getting an electric AI instead? Sporty's backup
received good
| reviews and it's cheap.
|
| Marco Leon
|
| "Victor J. Osborne, Jr." wrote in
message
| ...
| I think I just got my money's worth of the Beech
Proficient Pilot Program.
| (BPPP)
|
| Last week, 3 of us where trying to get to Kissimmee from
TN but Florida
| was
| closed off due to a line of severe thundershowers across
the state.
| Waited
| in Waycross (great FBO, btw) then set off at 9pm into
the night with XM
| weather and a storm scope. Most of the stuff had
dissipated but we did
| have
| to do an end around some the remnants. During one of
the trips thru the
| clouds, the Gyro warning light came on and I looked over
to see Zero
| pressure. No prob. just hit the backup Standby Gyro and
keep going. 5
| minutes later, the light came back one and we had the
same reading. What
| are the chances? Went the rest of the way (better
weather ahead rather
| than
| behind) partial panel with both AI's covered up.
|
| Next day, in Orlando (Southern Aviation), we found both
pumps had sheared
| shafts. Engine mounted because it was old (500+ hrs)
and the electric
| motor-driven backup due to lack of use.
|
| Now that the horse is out of the barn, I'm going to
exercise the backup
| before starting from time to time and change pumps at
500 hours. Also,
| keep the partial panel skills up. BTW: The idiot light
(Gyro Warning) is
| a
| great investment, if you don't have one.
|
| FWIW, {|;-)
|
| Victor J. (Jim) Osborne, Jr.
| CP-ASEL
|
|
|
|
|
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