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  • That was fun.

    We have been having really crappy visibility below 2,500 here for weeks--sooo I'm thinking, ugly day, do something with it.

    I take off and fly outbound to a GPS waypoint I've set up 5 miles out that is straight in to 32 more or less on the runway heading.

    Did a little offside angle and then turned back to the waypoint using N, B, and alky a lot because the horizon was non-existant. On my surplus T&B it is about 1 pointer width for a nice calm turn.

    About 1/2 mile from the waypoint, on the runway heading, I change the waypoint to the one on the numbers for 32. Takes a few seconds, works out fine. Power back, start down from 2,200.
    First run at 80mph GPS/ 400 per minute, I wind up too high.

    Go back try it again at 70 mph. Bingo, would have put me right on the numbers. This is all with a $130 Magellan GPS that just happens to have WAAS. Amazing device.

    Our resident old timer corporate pilot here gestimated that our VOR approach might put you as much as 5 miles on either side if you add up all the possible errors.

    Hope I'll never need it, but it is good to keep your blade sharp and one more ace up your sleeve.

    I think I will work it out from a little higher up and further out as the tops on the valley fog, when it is really socked in, may be a little higher than 2,200.

    Managed to turn an ugly day into something enjoyable, challenging, and useful.

    Darryl
    Last edited by flyguy; 01-18-2009, 23:09.

  • #2
    Re: That was fun.

    Excellent idea DC,

    It has always been an interesting daydream for me to imagine an emergency home-made un-published GPS approach for several safe landing strips. Not being instrument rated, and not having a horizon reference in most of the airplanes I've flown,it may never happen.

    But... there USED to be some sort of a whiz-bang non-gyro horizon reference instrument made by the Hamilton Vertical Card Compass people. They sold it for backup, or for aerobatic practice on hazy VFR days, and then shortly it was off the market and never spoken about again.

    If anyone else remembers that instrument, or knows about something similar that works well without electricity or gyro vacuum, please let me know about it.

    An emergency horizon reference, whether electrical or vacuum or whatever... plus a home-made GPS emergency approach procedure, would add another safety option in an emergency.
    Taylorcraft : Making Better Aviators for 75 Years... and Counting

    Bill Berle
    TF#693

    http://www.ezflaphandle.com
    http://www.grantstar.net
    N26451 (1940 BL(C)-65) 1988-90
    N47DN (Auster Autocrat) 1992-93
    N96121 (1946 BC-12D-85) 1998-99
    N29544 (1940 BL(C)-85) 2005-08

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    • #3
      Re: That was fun.

      Never hear about that one, but my limited physics tells me it can't be done without something that appoximates a gyro. I really deplore the new style turn indicators that show the aircraft symbol banking--yuk and double yuk.

      I have a rate-of-climb indicator which, combined with airspeed and power settings, provides me with pitch information and the T&B will tell me if I am keeping the wings level. Our field has ATIS and my altimeter, old and ugly as it is, agrees spot on with the baro here within +- 10 feet.

      It is rather pleasant to learn by trial that your feet work on the turn pointer and and the ailerons will center the ball and that is what I have to remember when my head starts getting turned around. (I bet I will get some comments because you don't normally do it that way under VFR conditions.)

      Old timers and experienced instrument pilots may be amused at my amateur enthusiasm for this, but it really is something to realize that this simple old airplane, with just elementary instruments, can be flown without visual ground references if necessary, as in an emergency.
      DC
      Last edited by flyguy; 01-19-2009, 11:52.

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      • #4
        Re: That was fun.

        Needle, ball , altimeter and airspeed plus my new Garmin auto GPS works just fine. I have laid out the four approaches to 2D1 just in case. I had the same system for my original Loran , bless its soul.
        It got me back from the Acey-Duecy to my camp site at OSH in 1975? maybe
        Last edited by Forrest Barber; 01-19-2009, 14:50. Reason: sp error
        Taylorcraft Foundation, Inc
        Forrest A Barber 330-495-5447
        TF#1
        www.BarberAircraft.com
        [email protected]

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