This work very nicely and gives the cable name in quotes. Thanks. I'm still quite new to Mathematica.

That said, I'm not sure how to clear the error: Part::pkspec1: The expression ?? cannot be used as a part specification. Generated by code below. I've reviewed the many other replies to this simple question, but remain stumped.

sccdata = {{"ACCR_558-T73", 0.`, 31378.`, -17629.9`, -6893.`, 
    3574.`}, {"Bison", -472.6`, 52971.8`, -51954.7`, 13720.`, 
    6138.`}, {"Bittern", -1012.4`, 64046.`, -50768.6`, -27693.`, 
    39210.`}, {"Bluebird", -1237.2`, 64355.7`, -63104.2`, 5109.`, 
    15764.`}, {"Bluejay", -1012.4`, 64046.`, -50768.6`, -27693.`, 
    39210.`}, {"Bluejay_t2", -1012.4`, 64046.`, -50768.6`, -27693.`, 
    39210.`}, {"Bobolink", -1012.4`, 64046.`, -50768.6`, -27693.`, 
    39210.`}, {"Brant", -1653.6`, 71375.3`, -82065.9`, 20811.`, 
    13436.`}, {"Bunting", -1012.4`, 64046.`, -50768.6`, -27693.`, 
    39210.`}, {"Canary", -472.6`, 52971.8`, -51954.7`, 13720.`, 
    6138.`}}  cablearray = {"Bison", "Bittern", "Bluebird", "Bluejay", "Bluejay_t2",
        "Bobolink", "Brant", "Bunting", "Canary", "Canvasback", 
       "Cardinal", "Chickadee", "Chukar", "Cochin", "Condor", "Coot", 
       "Curlew", "Dipper", "Dorking", "Dotterel", "Dove", "Drake", 
       "Eagle", "Egret", "Falcon", "Finch", "Flamingo", "Flicker", 
       "Gannet", "Grackle", "Grosbeak", "Grouse", "Guinea", "Hawk", "Hen",
        "Ibis", "Kingbird", "Lark", "Leghorn", "Mallard", "Martin", 
       "Merlin", "Minorca", "Orchid AAC", "Oriole", "Ortolan", "Osprey", 
       "Ostrich", "Parakeet", "Partridge", "Peacock", "Pelican", 
       "Penguin", "Petrel", "Pheasant", "Pigeon", "Quail", "Rail", 
       "Raven", "Redwing", "Robin", "Rook", "Ruddy", "Sparate", "Sparrow",
        "Squab", "Starling", "Stilt", "Swan", "Swanate", "Swift", "Teal", 
       "Tern", "Turkey", "Waxwing"};
    (*Make pop up menu to select conductor*)
    cables = {PopupMenu[Dynamic[u], cablearray], Dynamic[u]}
    (*Get row number for conductor, clear out brackets*)
    cableloc = Dynamic[First[Flatten[Position[cablearray, u]]]]
    (*Define table for coefficients*)
    a = Table[0, {i, 1, 5}]
    i = 1;
    (*Attempt to fill table with cable coefficients*)
    Do[
      a[[i]] = sccdata[[cableloc, i + 1]];
      i = i + 1;
      , 5]; ;