---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Tue 01/15/08: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:24 AM - Re: Home-made 406 MHz alternatives? () 2. 09:56 AM - Re: Re: Home-made 406 MHz alternatives? (Ron Lee) 3. 07:42 PM - IFR GPS requirements (William Gill) 4. 08:55 PM - Re: IFR GPS requirements (Kelly McMullen) 5. 09:16 PM - Re: IFR GPS requirements (Sam Buchanan) 6. 09:49 PM - Re: IFR GPS requirements (Bruce Gray) ________________________________ Message 1 _____________________________________ Time: 09:24:03 AM PST US From: Subject: RV-List: Re: Home-made 406 MHz alternatives? >"Technically, there's nothing stopping any of us from doing this" Yes there is. Nice try but ELT's are one device that MUST meet strict specifications regardless of type of aircraft its mounted to. Not saying you can't make a homemade ELT, but it would be illegal and break FAA, FCC and international SAR regulations. The ELT and transponder are two devices that must be "certified" even if in an experimental aircraft. Fork over $1000 for a Artex 406ME, be done, and also get a $600 PLB. >From: "Rob Prior" >Subject: RV-List: Home-made 406 MHz alternatives? Why couldn't we start with a (cheap) 406Mhz PLB, rig up our own GPS interface, and our own inertial or manual trigger? Technically, there's nothing stopping any of us from doing this, it's really not rocket science. The question is, why isn't it acceptable, if the plane is experimental in the first place? Discuss... :) -Rob --------------------------------- Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. ________________________________ Message 2 _____________________________________ Time: 09:56:37 AM PST US From: "Ron Lee" Subject: Re: RV-List: Re: Home-made 406 MHz alternatives? My suggestion for the below comment is get the GPS enabled 406 MHz ELT and the Spot unit for everyday notification of your position. The most important thing is don't make stupid decisions about piloting. Ron Lee Fork over $1000 for a Artex 406ME, be done, and also get a $600 PLB. ________________________________ Message 3 _____________________________________ Time: 07:42:36 PM PST US From: "William Gill" Subject: RV-List: IFR GPS requirements Hello All, I have a Bendix-King KLN 94 GPS (IFR certified unit) in an RV-7. During discussions with an FAA inspector, I was told that I was not allowed to use this unit for IFR use until I completed a 337 form with a field approval, and completed the required test flight. I was not aware that the experimental ships had to jump through the same hoops as the Type Certificated aircraft. Can this possibly be true? I welcome all input on this subject. Bill RV-7 Lee's Summit, MO ________________________________ Message 4 _____________________________________ Time: 08:55:26 PM PST US From: Kelly McMullen Subject: Re: RV-List: IFR GPS requirements Get a copy of AC-20-138A dated 12/22/03. It is the latest guidance on panel mount GPS. However, it is written for TC aircraft. How that translates to amateur built is not clear to me. Key tests the FAA is interested in include frequency interference with installed navcoms, and a flight test in VFR demonstrating its accuracy by visual observation on some approaches and over known points in the database. William Gill wrote: > > Hello All, > > I have a Bendix-King KLN 94 GPS (IFR certified unit) in an RV-7. > During discussions with an FAA inspector, I was told that I was not > allowed to use this unit for IFR use until I completed a 337 form with > a field approval, and completed the required test flight. I was not > aware that the experimental ships had to jump through the same hoops > as the Type Certificated aircraft. Can this possibly be true? I > welcome all input on this subject. > > Bill > > RV-7 > > Lees Summit, MO > > * > > > * ________________________________ Message 5 _____________________________________ Time: 09:16:13 PM PST US From: Sam Buchanan Subject: Re: RV-List: IFR GPS requirements William Gill wrote: > Hello All, > > I have a Bendix-King KLN 94 GPS (IFR certified unit) in an RV-7. During > discussions with an FAA inspector, I was told that I was not allowed to > use this unit for IFR use until I completed a 337 form with a field > approval, and completed the required test flight. I was not aware that > the experimental ships had to jump through the same hoops as the Type > Certificated aircraft. Can this possibly be true? I welcome all input on > this subject. 337's are not applicable to aircraft with an experimental airworthiness certificate. The 337 form is authorized under FAR 43. However, FAR 43.1 (3b) states: "This part (FAR 43) does not apply to any aircraft for which an experimental airworthiness certificate has been issued, unless a different kind of airworthiness certificate had previously been issued for that aircraft." The FAA official is sadly misinformed. Sam Buchanan ________________________________ Message 6 _____________________________________ Time: 09:49:57 PM PST US From: "Bruce Gray" Subject: RE: RV-List: IFR GPS requirements To install a KLN 94 in an experimental aircraft and NOT perform the tests required in AC-20-138A would be, in my opinion, reckless and foolish. I'm not saying you need a 337, just do the tests and verify that the thing works as advertised before you fly IMC. Bruce www.Glasair.org -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of Kelly McMullen Sent: Tuesday, January 15, 2008 11:49 PM Subject: Re: RV-List: IFR GPS requirements Get a copy of AC-20-138A dated 12/22/03. It is the latest guidance on panel mount GPS. However, it is written for TC aircraft. How that translates to amateur built is not clear to me. Key tests the FAA is interested in include frequency interference with installed navcoms, and a flight test in VFR demonstrating its accuracy by visual observation on some approaches and over known points in the database. William Gill wrote: > > Hello All, > > I have a Bendix-King KLN 94 GPS (IFR certified unit) in an RV-7. > During discussions with an FAA inspector, I was told that I was not > allowed to use this unit for IFR use until I completed a 337 form with > a field approval, and completed the required test flight. I was not > aware that the experimental ships had to jump through the same hoops > as the Type Certificated aircraft. Can this possibly be true? I > welcome all input on this subject. > > Bill > > RV-7 > > Lee's Summit, MO > > * > > > * ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv-list Browse Digests http://www.matronics.com/digest/rv-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.