Drilled holes in the firewall for GPS antenna bracket. Scuffed, cleaned and primed the GPS antenna bracket. Installed nut plates on the flanges of GPS antenna bracket.Fabricated angle stiffeners to back up the GPS antenna bracket on the aft side of the firewall
Drilled a 3/8" hole in the avionics bulkhead and installed a rubber grommet for the GPS RG400 coax
