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Thread: engine upgrade

  1. #1

    engine upgrade

    The engine number DOES CHANGE. Per the STC the model number changes to add
    STC XXXXXXXX to the 0-320 number. Also remember that if you had the complete
    STC applied, the nose section of the engine has been modified and the type
    of cylinders of the engine have changed. (Chrome instead of Steel). After
    the STC, it is not the same engine.

    You need the Field approval in-order to re-install the modified engine back
    onto the production frame. For the most part, you could have just had the
    STC applied and then just re-installed the engine but if something ever
    happened and the NTSB determined it was due to the modification, your
    insurance company would most likely not pay out because you installed a
    modified engine on a production aircraft without FAA approval.



    Jeff Bryant
    Jeff Bryant
    Southwest Regional Director
    Beech Aero Club


    _____

    From: musketeermail@yahoogroups.com [mailto:musketeermail@yahoogroups.com]
    On Behalf Of Robert Lewis
    Sent: Thursday, September 22, 2005 4:53 PM
    To: musketeermail@yahoogroups.com
    Subject: [musketeermail] engine upgrade


    In prior months I wrote about my conversion form 150
    HP to 160 HP using the Ly-Con STC. I had an
    interesting conversation with a FSDO inspector, name
    left blank to protect the innocent ha ha. This FSDO
    inspectors office members during a discussion of my
    field approval felt that the STC was all that was
    necessary to do my conversion. They felt that my
    engine was covered by the STC and the designation of
    the engine did not change, still O-320E2C, so, I
    didn't need the field approval for installation as it
    was still covered by my Type certificate data sheet.
    They thought that if the engine designator changed IE
    from an 0-320 E2C to another model number then, I
    would need the field approval. I asked and received
    one anyway to avoid any future problems but- What do
    you guys think?




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  2. #2

    engine upgrade

    I'll generally defer to the FSDO guy, but they have their office
    discussions about how to interpret the rules, too. In this case, it
    sounds like they would have been correct for the engine itself.
    However, the field mod addresses the airframe, too. As "chicken-
    sh**" as it sounds, the airframe type certificate would cite the
    wrong engine power, as would the required documentation, such as the
    Pilot's Operating Handbook, performance charts, etc. I'd definitely
    go for the Field Approval (337).
    Bob
    A&P, Aero Eng
    N6504R
    --- In musketeermail@yahoogroups.com, Robert Lewis <vpd401@y...>
    wrote:
    > In prior months I wrote about my conversion form 150
    > HP to 160 HP using the Ly-Con STC. I had an
    > interesting conversation with a FSDO inspector, name
    > left blank to protect the innocent ha ha. This FSDO
    > inspectors office members during a discussion of my
    > field approval felt that the STC was all that was
    > necessary to do my conversion. They felt that my
    > engine was covered by the STC and the designation of
    > the engine did not change, still O-320E2C, so, I
    > didn't need the field approval for installation as it
    > was still covered by my Type certificate data sheet.
    > They thought that if the engine designator changed IE
    > from an 0-320 E2C to another model number then, I
    > would need the field approval. I asked and received
    > one anyway to avoid any future problems but- What do
    > you guys think?
    >
    >
    >
    >
    > __________________________________________________ ____
    > Yahoo! for Good
    > Donate to the Hurricane Katrina relief effort.
    > http://store.yahoo.com/redcross-donate3/





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