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07-18-2018 12:36 PM

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  • Frederick MD


  • Posted in thread: doubler in the strut attach area on 07-18-2018 at 04:57 PM
    Remove the nails. Its possible that the glue is a Resorcinol glue, I would use any tool to
    remove the plywood down to the glue line. Be careful not to dig into the main spar wood. Then I
    would sand or...

  • Posted in thread: Lost Engine Log Book Entery on 07-11-2018 at 05:21 PM
    Only the Manufacturer that holds the TC and/or the PC can “rebuild”. See 43.3(j). It only goes
    to 0 time with a rebuild. So in answer to your question, there is nobody that the manufacturer
    can approv...

  • Posted in thread: Another "Fuselage upgrades" suggestions thread on 07-11-2018 at 12:40 PM
    You don’t identify which model J3 you have. If you have an “L” or “F” that simply has a
    Continental installed, you need some “approved data” to increase the GW as TC 692 & 698 don’t
    allow for the incr...

  • Posted in thread: Field-approved propeller on 07-07-2018 at 01:35 PM
    Bob, the regulation (CAR 4) requires a Type Certified propeller for Aircraft over 1000 lb gross
    weight. The only way out of that is with an exemption to the rule, or an STC based on the new
    Part 23 ba...

  • Posted in thread: Field-approved propeller on 07-06-2018 at 10:52 PM
    Under CAR 4, only “light aircraft” can have an uncertified wood prop installed. You need to go
    to a real early version of CAR 4 to find the definition of “light Aircraft”, it is an aircraft
    with a gro...

  • Posted in thread: Rigging on 06-21-2018 at 01:10 PM
    A little off subject but this illustration from an L-4 erection manual shows the wing dihedral
    as 45' (as in, 0 degs-45 minutes or 0.750-degs?) and wing washout at 41' (as in, 0 degs-41
    minutes, or 0....

  • Posted in thread: A65 engine mount needed on 06-20-2018 at 05:54 PM
    We should be paying you!I am sufficiently impressed with their parts and service - I bet they
    could be talked into metal certs in a heartbeat. Would they have any liability in such a
    scheme? Getting a...

  • Posted in thread: A65 engine mount needed on 06-20-2018 at 04:26 PM
    So long as the owner participated in the design, fabrication, or inspection (quality) of the
    part and can confirm it meets ALL the original design elements, it can be considered an “owner
    produced” pa...

  • Posted in thread: Rigging on 06-20-2018 at 04:17 PM
    The main problem with Paul’s L4 is that when the fuselage was repaired years ago, it was left
    “out of square”. The fuselage is tweaked so it forms a parallelogram rather than a rectangle
    from the lowe...

  • Posted in thread: Handbooks vs. form 309? on 06-19-2018 at 01:25 PM
    So to help with a couple questions, for the Aeronca Chief or any other CAR 4 airplane that
    otherwise meets the Light Sport definition, there never was a Vh. Vh was only introduced as
    part of the Light...

David Schober A&P, IA, DAR, vDER