
Firewall Prep – Part 3
Created -03R cowling attach hinge from MS20257P4 piano hinge. Located hinge and firewall attach angle per Model B plans and pilot drilled -01R assembly. Verified alignment with spare hinge pin. Hours Worked: 0.65
Build Log for Sonex 0849B

Created -03R cowling attach hinge from MS20257P4 piano hinge. Located hinge and firewall attach angle per Model B plans and pilot drilled -01R assembly. Verified alignment with spare hinge pin. Hours Worked: 0.65

Located and pilot drilled lower longerons on LH/RH fuselage side assemblies. Located and clecoed upper longerons and miscellaneous side angles to fuselage sides. Determined -11L/R Gear Attach Angles had pilot holes drilled in wrong spot so remade them from 1x1x0.125×96…

Creation of -06L/R lower longerons per B Model plans from 1x1x0.125 6061 angle. Hours Worked: 0.72

Creation of -02L/R, -04L/R, -07L/R, -11L/R, and -12L/R per legacy plans out of aluminum angle stock. Hours Worked: 5.96

Created -05 support angles from .063 sheet and legacy plans. Located them onto -04L/R rudder pedal mount angles per plans and riveted with CCC rivets to create -03L/R assemblies. Cut 2.5×2.5×0.125 angle to create -12L/R angle clips and pilot drilled…

Created -08 clips per legacy plans out of Z01-03 stock. Up drilled -03 assembly then dimpled aft -05 tunnel angle. Countersunk -04 support channel, -12 spacer plates, and -14L/R and -15L/R angles. Refitted components together, installed MS24694 bolts for standard…

Bent trailing edge of forward fuselage floor up 5 degrees. Pilot drilled holes in top edge of -02 forward tunnel zee. Began clecoing -03 aft tunnel web assembly together. Hours Worked: 1.16

Creation of miscellaneous firewall components per plans. -10, -11, and -12 parts created via legacy plans set. Bent edges of -01 up per plans and set aside. -03 assembly created from firewall former halves.. Hours Worked: 2.27

Riveted turtledeck assembly to fuselage tail cone box per plans revision E. Up drilled holes through side skins and upper splice plates to 3/16″ and installed AN525 hardware. Torqued to spec. Clecoed crosstie closeout plate into place and riveted into…

Riveted formers #5 through #2 to turtledeck skin starting at upper longerons and moving towards the skin splice channel. Riveted lower #1 formers to back of cross tie box then riveted upper #1 formers to turtledeck skin assembly. Riveted F20-08…

Prepped and clecoed formers #4 through #2 to tail cone box and turtle deck skin. Prepped and clecoed #1 lower formers to cross tie box, side skins, and turtledeck skin. Prepped and clecoed upper #1 formers to turtledeck skin along…

Deburred and prepped splice channel assembly and riveted skin splice channel and all attach angles. Deburred, scotchbrited, and acetoned LH and RH turtledeck skins and riveted to splice channel assembly to create -02 turtledeck skin assembly. Clecoed RH side of…