<div dir="ltr">A little late to the party but from my A&P days...<div><br></div><div>De-Icer - Removes accumulated ice (i.e. pneumatic boots on leading edges) </div><div>Anti-Ice - Prevents accumulation (i.e. bleed air or weeping alcohol)</div><div><div><br></div><div>De-Icing Fluid (as in on the tarmac) is heated fluid that will melt any accumulation and slow any build-up before departure on the horizontal surfaces. Does nothing once the aircraft is airborne.</div></div><div><br></div><div>Electric boots on the props are referred to as de-ice but can also serve as anti-ice. Pneumatic de-icers are problematic because moisture can build up in the lines then freeze (just when you needed them most!) The boots are held tight to the L/E by vacuum and any holes in the boot allow water to enter when flying through precipitation. </div><div><br></div><div><br></div><div><br></div><div> <br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Dec 5, 2015 at 2:34 PM, Daniel Dupont via NSRCA-discussion <span dir="ltr"><<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">nsrca-discussion@lists.nsrca.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word;color:rgb(0,0,0);font-size:14px;font-family:Calibri,sans-serif"><div><div><div>De-icer Booth would be on smaller airplanes….like king air…size, was also used a lot in 50’s design, its a very limited system in term of how much ice it can take…..</div><div><br></div><div>Since it has to accumulate ice before engaging it….there’s a risk of roll off…..meaning the ice might get being the booth if the precipitation are too much for the system to handle, the bleed air is the prefer method, will handle a lot of ice….</div><div><br></div><div><div><div><font color="#000000"><font face="Calibri"><span style="font-size:14px">Daniel iMac</span></font></font></div></div></div></div></div><div><br></div><span><div style="font-family:Calibri;font-size:12pt;text-align:left;color:black;BORDER-BOTTOM:medium none;BORDER-LEFT:medium none;PADDING-BOTTOM:0in;PADDING-LEFT:0in;PADDING-RIGHT:0in;BORDER-TOP:#b5c4df 1pt solid;BORDER-RIGHT:medium none;PADDING-TOP:3pt"><span style="font-weight:bold">From: </span> NSRCA-discussion <<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a>> on behalf of Randy Forbus via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">nsrca-discussion@lists.nsrca.org</a>><br><span style="font-weight:bold">Reply-To: </span> Randy Forbus <<a href="mailto:Rforbus@hotmail.com" target="_blank">Rforbus@hotmail.com</a>>, General pattern discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">nsrca-discussion@lists.nsrca.org</a>><br><span style="font-weight:bold">Date: </span> Saturday, December 5, 2015 at 14:21<span class=""><br><span style="font-weight:bold">To: </span> Ron Hansen <<a href="mailto:rcpilot@wowway.com" target="_blank">rcpilot@wowway.com</a>>, General pattern discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">nsrca-discussion@lists.nsrca.org</a>><br></span><span style="font-weight:bold">Subject: </span> Re: [NSRCA-discussion] Attention Commercial Full Scale Pilots<br></div><div><div class="h5"><div><br></div><div><div dir="ltr"><div style="font-size:12pt;color:#000000;background-color:#ffffff;font-family:Calibri,Arial,Helvetica,sans-serif"><p>Most all commercial aircraft have wing deice system a heated leading edge that works off bleed air,or deice boots, which inflates to break off any ice build up<br></p><br><br><div style="color:rgb(0,0,0)"><hr style="width:98%;display:inline-block"><div dir="ltr"><font color="#000000" face="Calibri,sans-serif" style="font-size:11pt"><b>From:</b> NSRCA-discussion <<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a>> on behalf of Ron Hansen via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">nsrca-discussion@lists.nsrca.org</a>><br><b>Sent:</b> Saturday, December 5, 2015 7:08 PM<br><b>To:</b> NSCRA Discussion List<br><b>Subject:</b> [NSRCA-discussion] Attention Commercial Full Scale Pilots</font><div> </div></div><div><div><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
I have a couple of questions regarding de-icing of full scale commercial jets. I’m trying to prep for being an expert witness on an environmental matter related to de-icing.</p><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
</p><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
Is the purpose of the de-icing fluid just to knock off the ice prior to take off or is it also intended to remain on the plane during flight?</p><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
</p><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
Do commercial jets contain any other mechanism for preventing or stopping ice buildup during flight (e.g., heating elements)?</p><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
</p><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
I always assumed that all de-icing activities occur out in the open. However, I’ve heard some airports now do this within enclosures. Are these enclosures two side (i.e., the plane pulls straight in one side of the enclosure and straight out the other side
of the enclosure without raising and lowering doors on the entrance and exit?</p><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
</p><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
Any other details you can provide me would be appreciated.</p><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
</p><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
Thanks</p><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
</p><p style="margin:0in 0in 0pt;font-family:"Calibri","sans-serif";font-size:11pt">
Ron</p></div><br><br>
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