> Friend of mine just landed his fine airplane gear up.
> How about all you single chip microcomputer programmers out there
> build a gear up landing alarm.
> > If the RPM is below 4000 and during the last three
> 15 seconds consecutive periods the altitude has
> steadily decreased and the gear is still up turn
> on the alarm.

An electronic reminder makes absolute sense but perhaps folks don't
know about a few of these. My first instructor never taught me any
mental tricks, while my second had me repeat them in a 152. Second
instructor made life much more fun.

http://www.flightinfo.com/instructorhints.asp

GUMPS
Gas
Undercarriage
Mixture
Prop
Switches

Karl


My 1973 Bellanca Super Viking has gear warning based on manifold
pressure.  IIRC, at MP < 17" with the gear up, a horn is sounded.  If
airspeed decays to less than 100 mph, the gear extends regardless of
selector switch position, unless at full throttle (i.e. climbout).  All
done with pressure/micro switches.  This system complicates emergency
procedures because of the need to keep the throttle at full after an
engine failure.   A system like this is a great safety feature, and I'm
glad it's there, but the criteria need to be carefully considered for
engine-out emergencies.  A override switch might work, but just another
item on the emergency checklist.

Steve Rosine


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