X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 26 Feb 2012 16:43:59 -0500 Message-ID: X-Original-Return-Path: Received: from imr-ma04.mx.aol.com ([64.12.206.42] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with ESMTP id 5415422 for lml@lancaironline.net; Sat, 25 Feb 2012 17:32:03 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.206.42; envelope-from=Sky2high@aol.com Received: from mtaomg-db05.r1000.mx.aol.com (mtaomg-db05.r1000.mx.aol.com [172.29.51.203]) by imr-ma04.mx.aol.com (8.14.1/8.14.1) with ESMTP id q1PMVJiO015879 for ; Sat, 25 Feb 2012 17:31:19 -0500 Received: from core-mtd002c.r1000.mail.aol.com (core-mtd002.r1000.mail.aol.com [172.29.235.197]) by mtaomg-db05.r1000.mx.aol.com (OMAG/Core Interface) with ESMTP id EE935E000081 for ; Sat, 25 Feb 2012 17:31:18 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: <2bcb1.7c246b79.3c7abb36@aol.com> X-Original-Date: Sat, 25 Feb 2012 17:31:18 -0500 (EST) Subject: Having nightmares about ADS-B? X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_2bcb1.7c246b79.3c7abb36_boundary" X-Mailer: AOL 9.6 sub 168 X-Originating-IP: [67.175.156.123] x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:345818912:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d33cb4f4961364cd1 --part1_2bcb1.7c246b79.3c7abb36_boundary Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en =20 ADS-B=20 Everything you didn=E2=80=99t want to know but you better understand now.= =20 Consider just the continental USA for the moment. By 2020 aircraft must= =20 be broadcasting ADS-B out data (altitude, location, direction, speed, ID,= =20 etc) in class A, in or above class B and C airspace and within a 30 NM=20 radius of B and C airports or in class E at an altitude above 10,000 MSL, = but=20 not at an AGL of 2500 or less (in class E). In other words, if you fly out= in=20 the weeds and never go anywhere important, forgetaboutit. =20 Uh, there are special non-compliance allowances for aircraft with no=20 electrical system, balloons and gliders. So heads up out there. =20 Information may be broadcast on the UAT frequency of 978 MHz or on the=20 current transponder frequency of 1090 MH commonly known as Extended Squitt= er=20 (ES). Oops, there=E2=80=99s special mandatory rule for flights at or above= 18,000=20 MSL =E2=80=93 ADS-B out must be transmitted on 1090 MHz ES even if it is a= lso=20 transmitted on 978 MHz. =20 If you fly at or above FL18 and are thinking about replacing your=20 transponder in the near future, consider one that transmits ES or is easil= y=20 converted to such transmission at a later date.=20 Why UAT (Universal Access Transceiver) on a different frequency? Uh,=20 there are bandwidth, framing, rate and interrogation limitations on the=20 transponder frequency. =20 I hope that this is perfectly clear. But, not to worry as these specific= =20 requirements are 8 years away.=20 OK, so there is nothing here you need to know now about ADS-B Out in 2020.= =20 Ah, but there will be more about current ADS-B in a missive to follow =E2= =80=93=20 this is merely to whet your appetite or help you get to sleep.=20 See FAR 91.225, 91.227 and Appendix D if you are into self-abuse.=20 Grayhawk AKA Scott Krueger --part1_2bcb1.7c246b79.3c7abb36_boundary Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en

ADS-B

 

Everything you didn= =E2=80=99t want to=20 know but you better understand now.

 

Consider just the con= tinental=20 USA for the moment.  By 2020= =20 aircraft must be broadcasting ADS-B out data (altitude, location, direction= ,=20 speed, ID, etc) in class A, in or above class B and C airspace and wit= hin a=20 30 NM radius of B and C airports or in class E at an altitude above 10,000 = MSL,=20 but not at an AGL of 2500 or less (in class E).  In other words, if you fly out in= the=20 weeds and never go anywhere important, forgetaboutit.

 

Uh, there are special= =20 non-compliance allowances for aircraft with no electrical system, balloons = and=20 gliders.  So heads up out the= re.=20   

 

Information may be br= oadcast=20 on the UAT frequency of 978 MHz or on the current transponder frequency of = 1090=20 MH commonly known as Extended Squitter (ES). Oops, there=E2=80=99s special = mandatory=20 rule for flights at or above 18,000 MSL =E2=80=93 ADS-B out must be transmi= tted on 1090=20 MHz ES even if it is also transmitted on 978 MHz. 

 

If you fly at or above FL18 and are thin= king=20 about replacing your transponder in the near future, consider one that tran= smits=20 ES or is easily converted to such transmission at a later date.<= /P>

 

Why UAT (Universal Ac= cess=20 Transceiver) on a different frequency?&nb= sp;=20 Uh, there are bandwidth, framing, rate and interrogation limitations= on=20 the transponder frequency.  

 

I hope that this is p= erfectly=20 clear.  But, not to worry as = these=20 specific requirements are 8 years away.

 

OK, so there is nothi= ng here=20 you need to know now about ADS-B Out in 2020.  Ah, but there will be more about = current=20 ADS-B in a missive to follow =E2=80=93 this is merely to whet your appetite= or help you=20 get to sleep.

 

See FAR 91.225, 91.22= 7 and=20 Appendix D if you are into self-abuse.

 

Grayhawk AKA Scott=20 Krueger

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