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06-19-2018 9:24 AM

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  • Frederick MD


  • 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...

  • Posted in thread: Rigging on 06-13-2018 at 01:57 PM
    Not all airplanes fly straight or can be made to fly straight. Mine was wrecked in Germany in
    1945 and they didn't have a jig in Holland where she was rebuilt, just the TLAR method. They
    got it pretty...

  • Posted in thread: Acceptable tubing dent limits? on 06-06-2018 at 02:40 PM
    OA or TIG is acceptable process for 4130. Most Cubs have very limited use of 4130, most of the
    fuselage is 1018 or 1025. All these alloys should be welded with mild steel rod. I mostly use
    ER70S2 rod ...

  • Posted in thread: Dual bi plane fuel tanks & Cont O-200?? on 05-10-2018 at 11:26 AM
    Keep in mind that even though you have an O-200 installed, you are still limited to 80hp
    continuous. That would be based on the 12 gallon fuel system. With a larger fuel system you
    could do 88 hp cont...

  • Posted in thread: Installing C-90-12 ?? on 05-09-2018 at 12:26 PM
    The -8 is NOT in the TC. The -8F is.Item 311 C (10), page 12 of 21Based on TCDS E252, all C90s
    are flange crankshafts. So all you have is a C90-8F or C90-12F. Of course you also have the FH
    with a cra...

  • Posted in thread: Installing C-90-12 ?? on 05-08-2018 at 01:40 PM
    Are there any requirements on the Babcock other than bolt it on? We have one locally where the
    mechanic just bolted it on and signed the logbook. It has been through four annuals since then.
    One of th...

  • Posted in thread: Barn find looking for mags on 05-02-2018 at 11:35 AM
    And if a key twist to start switch, you need to change the switch. For most installations, the
    twist start switch ground the right mag so it only starts on the left.

  • Posted in thread: Resurrection on 05-01-2018 at 07:00 PM
    One thing to remember, donít say anything in the log book about compass repairs! They are
    Instruments and only repair stations are authorized to repair instruments. Another stupid FAA
    rule for somethi...

  • Posted in thread: Cowling changes when changing engines?? on 04-28-2018 at 09:06 PM
    Bob, the Reed conversion was on the Type Certificate. It is not an STC.Yeah, and since itís on
    the TC, it is a minor alteration and only requires a log book entry, go figure!

  • Posted in thread: The Great Debate, wood vs metal.....ah Spars on 04-19-2018 at 03:57 PM
    Not moot - if they find out they left off the L-3 there will be a revision. It is the same as a
    7AC with more windows.Bob, you are thinking L-16. The L-3, depending on version is a 65-TC, an
    YO-58, a ...

David Schober A&P, IA, DAR, vDER