Don.
Yes. Anytime you are installing something new , you then file the 337. It might make it harder to justify the installation of a automobile navigation system. But even if you install a new transponder, the 337 goes along that installation. Every Transponder is TSO'd. It is only for the mere replacement of instruments that you follow what the manufacturer was using. ERCO had no TSO instruments to install, so you don't have to do that either. Imagine an original Ercoupe, found in a barn after sleeping for 60 years. It's instruments are all no-TSO'd . Is the aircraft now unairworthy? No. Basic VFR that is all that there is and we can freely choose between TSO'd and non-TSO'd instruments. Some believe the TSO'd instruments are better. Fine. But the instruments are one thing - the glass cockpits are the other. Yes it means you can choose any glass cockpit of your choice and have not to wait for it passing TSO - which might never happen in many cases. Still, you need to file the 337 and of course work with your mechanic. Hartmut To: [email protected] From: [email protected] Date: Wed, 13 Jan 2010 15:27:13 +0000 Subject: [ercoupe-tech] Re: Re; Instaling NON TSO'd instruments or avionics Are we even certain of the statement "as long as it is an aircraft instrument"? Volts, amps, and oil pressure are not changed when produced by an aircraft engine. Would this same reasoning then, allow us to install a Dynon or MGL glass cockpit if we wanted to? --- In [email protected], Hartmut Beil <hb...@...> wrote: > > > Now, is there a ruling from the FAA that defines only TSO instruments in > certified aircraft? > No. We had that discussion already. > > The exceptions are transponders. These are all TSO. > > TSO'd parts are only required when defined by the manufacturer. > If you add another instrument, let's say a radar, you will have to get > approval for that also, TSO'd or not. > > Our Ercoupes were certified before TSO existed, so you can use whatever > instrument, as long as it is an aircraft instrument. > > > > Simple as that. > > > > It is a common misunderstanding of what TSO means and what it was made for > that leads to this misperception. > > > > It is a common myth that TSO means better quality. > > > > > > It does not. It means adherence to a standard. That s all. > > > > > > Hartmut > > > > > > > > > > > > > > To: [email protected] > From: ebengui...@... > Date: Wed, 13 Jan 2010 09:42:25 -0500 > Subject: [ercoupe-tech] Re; Instaling NON TSO'd instruments or avionics > > > > > > FACT: > Are TSO Instruments required in certificated aircraft? > Altimeter, airspeed, avionics, anything...... > . The problem is, if they're not TSO'd, on what basis are you installing > them? To be installed as an aircraft part, whatever you are installing > must be a standard part (not applicable to instruments - we're talking > hardware, wire, etc.), a TSO'd part, a TC'd/STC'd part, a PMA'd part, > or a part manufactured by the owner-operator. Otherwise it's not an > aircraft part, and will require a field approval. > But what if it's not? What if the manufacturer has no authorization > from the FAA of any kind? Not going to happen. Can't install it. Not > unless you get an STC or field approval. > That's it in a NUT SHELL > > > > __________________________________________________________ > Windows Live: Friends get your Flickr, Yelp, and Digg updates when they > e-mail you. > http://www.microsoft.com/middleeast/windows/windowslive/see-it-in-action/social-network-basics.aspx?ocid=PID23461::T:WLMTAGL:ON:WL:en-xm:SI_SB_3:092010 > _________________________________________________________________ Windows Live: Make it easier for your friends to see what you’re up to on Facebook. http://www.microsoft.com/middleeast/windows/windowslive/see-it-in-action/social-network-basics.aspx?ocid=PID23461::T:WLMTAGL:ON:WL:en-xm:SI_SB_2:092009
