X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 20 Jun 2012 12:12:01 -0400 Message-ID: X-Original-Return-Path: Received: from imr-da04.mx.aol.com ([205.188.105.146] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5609553 for lml@lancaironline.net; Wed, 20 Jun 2012 10:54:23 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.105.146; envelope-from=vtailjeff@aol.com Received: from mtaomg-mb04.r1000.mx.aol.com (mtaomg-mb04.r1000.mx.aol.com [172.29.41.75]) by imr-da04.mx.aol.com (8.14.1/8.14.1) with ESMTP id q5KErfdA029880 for ; Wed, 20 Jun 2012 10:53:41 -0400 Received: from core-mnb003b.r1000.mail.aol.com (core-mnb003.r1000.mail.aol.com [172.29.106.137]) by mtaomg-mb04.r1000.mx.aol.com (OMAG/Core Interface) with ESMTP id 65158E000088 for ; Wed, 20 Jun 2012 10:53:41 -0400 (EDT) References: <3144204120478346.WA.ntsbpressreleasesntsb.gov@listserv.ntsb.gov> X-Original-To: lml@lancaironline.net Subject: Fwd: NTSB ISSUES SAFETY ALERT TO PILOTS ON LIMITATIONS OF IN-COCKPIT WEATHER RADAR DISPLAYS In-Reply-To: <3144204120478346.WA.ntsbpressreleasesntsb.gov@listserv.ntsb.gov> X-MB-Message-Source: WebUI MIME-Version: 1.0 From: vtailjeff@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CF1D0B9CE1F6E2_19A0_2D9CF_webmail-stg-m01.sysops.aol.com" X-Mailer: AOL Webmail 36451-STANDARD Received: from 75.49.226.16 by webmail-stg-m01.sysops.aol.com (64.12.222.100) with HTTP (WebMailUI); Wed, 20 Jun 2012 10:53:39 -0400 X-Original-Message-Id: <8CF1D0B9CDAD2AA-19A0-AE2F@webmail-stg-m01.sysops.aol.com> X-Originating-IP: [75.49.226.16] X-Original-Date: Wed, 20 Jun 2012 10:53:40 -0400 (EDT) x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 1:2:482610304:93952408 X-AOL-SCOLL-URL_COUNT: 3 x-aol-sid: 3039ac1d294b4fe1e3f52adc This is a multi-part message in MIME format. ----------MB_8CF1D0B9CE1F6E2_19A0_2D9CF_webmail-stg-m01.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="us-ascii" -----Original Message----- From: NTSB Press Release To: AVIATION Sent: Wed, Jun 20, 2012 8:39 am Subject: NTSB ISSUES SAFETY ALERT TO PILOTS ON LIMITATIONS OF IN-COCKPIT WE= ATHER RADAR DISPLAYS To ensure that this news release is delivered to your inbox, add NTSB_NEWS@LISTSERV.NTSB.GOV to your address book. =20 NATIONAL TRANSPORTATION SAFETY BOARD NEWS RELEASE An independent federal agency NTSB ISSUES SAFETY ALERT TO PILOTS ON LIMITATIONS OF IN-COCKPIT WEATHER RAD= AR DISPLAYS =20 June 20, 2012 WASHINGTON - The National Transportation Safety Board (NTSB) yesterday issu= ed a Safety Alert to warn pilots using in-cockpit FIS-B and Satellite Weath= er display systems that the NEXRAD "age indicator" can be misleading. The a= ctual NEXRAD data can be as much as 20 minutes older than the age indicatio= n on the display in the cockpit. If misinterpreted, this difference in time= can present potentially serious safety hazards to aircraft operating in th= e vicinity of fast-moving and quickly developing weather systems.=20 NEXRAD mosaic imagery depicts weather conditions from multiple ground radar= sites. The NEXRAD "age-indicator" on the cockpit display indicates the tim= e that the mosaic image was created, not the time of the actual weather con= ditions. The NEXRAD image is always older than the actual weather condition= s.=20 The NTSB has cited two fatal weather-related aircraft accidents in which NE= XRAD images were displayed to the pilot that were presented as one-minute o= ld on the age-indicator, but contained information that was up to five to e= ight minutes behind the real-time conditions.=20 In addition to raising pilot awareness on this issue, the Safety Alert also= reminds pilots of the importance of obtaining a thorough preflight weather= briefing. The Safety Alert is available at http://go.usa.gov/v0Z.=20 Contact Information Office of Public Affairs 490 L'Enfant Plaza, SW=20 Washington, DC 20594=20 (202) 314-6100=20 kelly.nantel@ntsb.gov You are subscribed to NATIONAL TRANSPORTATION SAFETY BOARD. To unsubscribe,= visit: http://LISTSERV.NTSB.GOV/cgi-bin/wa.exe?SUBED1=3DNTSB_NEWS&A=3D1 ----------MB_8CF1D0B9CE1F6E2_19A0_2D9CF_webmail-stg-m01.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii"


= -----Original Message-----
From: NTSB Press Release <ntsbpressreleases@NTSB.GOV>
To: AVIATION <AVIATION@LISTSERV.NTSB.GOV>
Sent: Wed, Jun 20, 2012 8:39 am
Subject: NTSB ISSUES SAFETY ALERT TO PILOTS ON LIMITATIONS OF IN-COCKPIT WE= ATHER RADAR DISPLAYS

To ensure that this news releas= e is delivered to your inbox, add
NTSB_NEWS@LISTSERV.NTSB.GOV to your ad= dress book.
3DLogo NATIONAL TRAN= SPORTATION SAFETY BOARD NEWS RELEASE

An independent federal agency

NTSB ISSUES = SAFETY ALERT TO PILOTS ON LIMITATIONS OF IN-COCKPIT WEATHER RADAR DISPLAYS<= br>  
June 20, 2012
WASHINGTON - The National Transportation Safety Boa= rd (NTSB) yesterday issued a Safety Alert to warn pilots using in-cockpit F= IS-B and Satellite Weather display systems that the NEXRAD "age indicator" = can be misleading. The actual NEXRAD data can be as much as 20 minutes olde= r than the age indication on the display in the cockpit. If misinterpreted,= this difference in time can present potentially serious safety hazards to = aircraft operating in the vicinity of fast-moving and quickly developing we= ather systems.

NEXRAD mosaic imagery depicts weather conditions from multiple ground radar= sites. The NEXRAD "age-indicator" on the cockpit display indicates the tim= e that the mosaic image was created, not the time of the actual weather con= ditions. The NEXRAD image is always older than the actual weather condition= s.

The NTSB has cited two fatal weather-related aircraft accidents in which NE= XRAD images were displayed to the pilot that were presented as one-minute o= ld on the age-indicator, but contained information that was up to five to e= ight minutes behind the real-time conditions.

In addition to raising pilot awareness on this issue, the Safety Alert also= reminds pilots of the importance of obtaining a thorough preflight weather= briefing.

The Safety Alert is available at http://go.usa.gov/v0Z.


3D""
Contact Information
Office of Public Affairs 490 L'Enfant Plaza, SW
Washington, DC 20594


(202) 314-6100
kelly.nantel@ntsb.gov
You are sub= scribed to NATIONAL TRANSPORTATION SAFETY BOARD. To unsubscribe, visit:
http://LISTSERV.NTSB.GOV/cgi-bin/wa.exe?SUBED1=3DNTSB_NEWS&A= =3D1

----------MB_8CF1D0B9CE1F6E2_19A0_2D9CF_webmail-stg-m01.sysops.aol.com--