Flap Pulley Block

Planned and prepared for installation of a pulley block in the wing used for control of the flaps. This block was positioned on the rear spar about 1/4 inch from the rib, and lined up roughly with the flap horn.  Once we determined the approximate position, we cut a notch in the rib cap to accommodate the pulley.  We then carefully measured and re-positioned the pulley block, being careful to line up the pulley with the hole in the flap horn.  This was done both by using a long drill bit as a guide, and also sighting by eye, being careful to keep the flap in the 20 degree down position as directed by the manual.  Once the position was figured out, we drilled the holes for the pulley block, and attached it temporarily with Clecos.   Hours: 1.5

Michael is touching up a new notch in the rib cap with a file