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dlj04(at)josephson.com
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 Posted: Mon Jul 23, 2012 4:24 am Post subject: AeroElectric-List Digest: 1 Msgs - 07/22/12 |
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On 7/23/12 1:57 AM, AeroElectric-List Digest Server wrote:
| Quote: | For some reason, God only knows why he did half the things he did to this
airplane, the previous owner of an E-LSA cut the antenna for a 121.5
Ameri-King ELT down to 14.3" (measured from the base, he bent it, too).
What's the rule on a TSO'd unit in an experimental plane? Can I just solder
an extension on it to bring it back to the correct length or does it have
to be as the manufacturer made it? I don't own it, but I have to sign off
the annual.
The TSO (required to meet "approved" under FAR 91.207) generally
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includes the antenna supplied by the ELT mfr, so any modification would
void the TSO. You'd have to check with Ameri-King. Bending the antenna
is probably not a problem. It would not be a good idea to solder on an
extension, mainly because many ELT antennas are physically shorter than
quarter-wave due to the presence of loading coils, and you too would be
modifying TSO'd equipment without approval. As the inspector, are you
equipped to measure the radiated output in accordance with 91.207 (d)(4)?
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Mon Jul 23, 2012 6:03 am Post subject: AeroElectric-List Digest: 1 Msgs - 07/22/12 |
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DL, No, I'm not, I can update the batteries and all the other requirements.
Rick
On Mon, Jul 23, 2012 at 7:21 AM, D L Josephson <dlj04(at)josephson.com (dlj04(at)josephson.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: D L Josephson <dlj04(at)josephson.com (dlj04(at)josephson.com)>
On 7/23/12 1:57 AM, AeroElectric-List Digest Server wrote:
| Quote: | For some reason, God only knows why he did half the things he did to this
airplane, the previous owner of an E-LSA cut the antenna for a 121.5
Ameri-King ELT down to 14.3" (measured from the base, he bent it, too).
What's the rule on a TSO'd unit in an experimental plane? Can I just solder
an extension on it to bring it back to the correct length or does it have
to be as the manufacturer made it? I don't own it, but I have to sign off
the annual.
|
The TSO (required to meet "approved" under FAR 91.207) generally includes the antenna supplied by the ELT mfr, so any modification would void the TSO. You'd have to check with Ameri-King. Bending the antenna is probably not a problem. It would not be a good idea to solder on an extension, mainly because many ELT antennas are physically shorter than quarter-wave due to the presence of loading coils, and you too would be modifying TSO'd equipment without approval. As the inspector, are you equipped to measure the radiated output in accordance with 91.207 (d)(4)?
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