Wings
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Flap Rebuild – Part 5
Up drilled drive plate attach holes to 1/4″ for AN4 hardware and clecoed AN366F-428A nutplates into place. Disassembled both drive plate ribs, deburred, and riveted assemblies together Hours Worked: 0.92
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Flap Rebuild – Part 6
After completion of the drive rib assemblies, reclecoed assemblies together and completed final riveting. Flaps installed onto wings and appear to fit well. Hours Worked: 1.87
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Flap Rebuild – Part 4
Disassembled both LH and RH flap assemblies and deburred all parts. Cut out holes in -01L/R flap skin for flap tie rod clearance and reassembled flap assemblies with clecoes. Scotchbrited and acetoned all parts. Both assemblies ready for final riveting pending completion of SNB-W06-05L/R drive plate assembly nutplate installation Hours Worked: 2.90
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Flap Rebuild – Part 2
Pilot drilled and up drilled -04 flap drive plates to -02 and -03 flap ribs. Countersunk flap drive plates for CCC-44 rivets. Deburred assemblies and clecoed together pending receipt of nut plates. Cut -06L/R hinge halves from -P3 piano hinge and pilot drilled hinge halves per plans. Although hinge halves have different part numbers, no…
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Flap Rebuild – Part 3
Laid out flap rib holes on RH flap skin, center punched, and drilled. Bottom side skin cutout for flap pushrod marked. Lined up ribs under flap skin and began pilot drilling ribs starting with top side, upper hole on forward side, then hinge-half strip, and finally lower side. Set 1/16″ hinge half offset by using…
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Flap Rebuild – Part 1
After discussion with Sonex tech support, decided to scrap previously built flaps due to notch-out of skin on forward edge. Trimmed and deburred Z02-02 flap skin stock per plans to create -01L/R flap skins. Notches for flap pushrod yet to be cut. Mocked up -04 flap drive plates to flap ribs and pilot drilled. Discovered…
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Pitot Mast Drilling
Marked mounting holes in pitot mount and tube; two per side. Drilled pilot holes with #36 drill bit. Upsized mount holes to #25 for #6 screws. Carefully tapped pitot head with 6-32 tap through mounting pads. Front left hole had screw break off inside so needed to (mostly) drill out and redrill slightly lower. Mount…
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LH Aileron Inspection
Inventory of existing LH aileron assembly. As noted with RH aileron, skin trimmed slightly longer than specified in plans. Drilled out existing LH aileron tip rib and marked and trimmed LH aileron skin. Two rivets found missing from -06L hinge half and finished in place. LH aileron skin then prepped and deburred for new tip…
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Aileron Tip Ribs – Part 2
Due to geometry of SNB version of tip rib, fabricated .032″ spacer and installed in between tip rib and forward part of RH aileron skin. Up drilled RH aileron tip rib and riveted to RH aileron assembly. Used rotary tool to slightly enlarge counterweight opening in RH rear spar. Scotchbrited and acetoned RH completed RH…
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Aileron Tip Ribs – Part 1
Was able to save W04-10L tip rib from previous work and use strap duplicator to mark hole locations in new spots in aileron skin. Up drilled, deburred, and riveted LH aileron tip rib onto LH aileron assembly. Die grinded stained spots on LH aileron skin then scotchbrited and cleaned LH aileron assembly. Temporarily installed aileron…
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Aileron Hinge Replacement
Examined RH aileron assembly. Determined that aileron hinge half was not to plan and was improperly aligned with top edge. Drilled out hinge half and replaced with new hinge using strap duplicator to match holes. Leveled assembly on work bench and finished riveting on counterweight supports. Partially completed aileron assembled to wing and checked freedom…