I continued plugging away on the Horizontal Stabilizer. The Front Spar Caps are nested inside the flanges of the Front Spar. The get the alignment right, you have to make a mark 3/16" from one of the ends of the Spar Cap. The mark is then centered on the 28th flange hole from the end. Conversely, the opposite end of the Spar Cap should be in the same spot 28 flange holes from the other end. Once the alignenment is correct, numerous clamps are used to keep the Spar Cap and Spar in the correct position. The Spar Cap was #30 Match-Drilled through the Spar web holes into the Spar Cap.
The picture below shows a portion of the assembly clecoed together following Match-Drilling. Here you can see the Front Spar and the Front Spar Caps in their correct position.
This is one end of the assembly. The trimmed flange of the Spar Cap (prepared last night) is positioned against the Spar web as shown below.
This is the opposite side of the assembly showing numerous clecos installed in the Spar.
