PA-22 TRI-PACER PARTS CATALOG 27 26 28 21 8 4 19 22 42 31 25 30 29 24 2 1 36 41 6 10 3 20 40 9 5 23 34 38 7 16 37-39 35 17 11 33 32 18 13 12 15 11 17 14 Figure 59. Lear Radio Installation (Serial Nos. 22-1 to 22-7642 inclusive) 185