X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 27 May 2006 01:51:50 -0400 Message-ID: X-Original-Return-Path: Received: from imf20aec.mail.bellsouth.net ([205.152.59.68] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1128507 for lml@lancaironline.net; Thu, 25 May 2006 22:42:34 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.68; envelope-from=Lancair1@bellsouth.net Received: from ibm64aec.bellsouth.net ([70.153.225.32]) by imf20aec.mail.bellsouth.net with ESMTP id <20060526024151.ULAB24529.imf20aec.mail.bellsouth.net@ibm64aec.bellsouth.net> for ; Thu, 25 May 2006 22:41:51 -0400 Received: from p4desktop ([70.153.225.32]) by ibm64aec.bellsouth.net with ESMTP id <20060526024151.MUFT211.ibm64aec.bellsouth.net@p4desktop> for ; Thu, 25 May 2006 22:41:51 -0400 From: "Douglas W. Johnson, MD" X-Original-To: "Lancair Mailing List" Subject: Weakening hydraullic pressure over time in IVP X-Original-Date: Thu, 25 May 2006 22:41:51 -0400 X-Original-Message-ID: <010701c6806d$f120ff60$0f01a8c0@p4desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0108_01C6804C.6A0F5F60" X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 Thread-Index: AcaAbfDioGjriQ/XRq6Hv9PMaJtzDQ== This is a multi-part message in MIME format. ------=_NextPart_000_0108_01C6804C.6A0F5F60 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I have 880hrs TT on my IVP over the last nine years during which the hydraulics have functioned without any problems. Over the last 6 months or so, however, I have noticed that there is not as much "reserve" when the system is pressurized. In particular, in years past when the hydraulic pack stopped its run up and whining, I had enough pressure with the electrics off to raise and lower the flaps 2 to 3 times before running out of "juice". Now, the flaps go down once, but won't even come up fully once without restarting the hydraulic electrics. The hydraulic fluid levels are normal, the flaps don't seem to be binding, and the gear and flaps go up and down normally in flight. Any ideas on what's going on here? Anything to be concerned about? Thanks. Douglas W. Johnson, MD, FACR 8265 Riding Club Road Jacksonville, FL 32256 (904) 642-6016 Lancair1@bellsouth.net ------=_NextPart_000_0108_01C6804C.6A0F5F60 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I have = 880hrs TT on=20 my IVP over the last nine years during which the hydraulics have = functioned=20 without any problems. Over the last 6 months or so, however, I have = noticed that=20 there is not as much "reserve" when the system is pressurized. In = particular, in=20 years past when the hydraulic pack stopped its run up and whining, I had = enough=20 pressure with the electrics off to raise and lower the flaps 2 to 3 = times before=20 running out of "juice". Now, the flaps go down once, but won't even come = up=20 fully once without restarting the hydraulic electrics. The = hydraulic=20 fluid levels are normal, the flaps don't seem to be binding, and = the gear=20 and flaps go up and down normally in flight.

Any = ideas on what's=20 going on here? Anything to be concerned about? =20 Thanks.

Douglas W. Johnson, MD, FACR =
8265 Riding Club Road
Jacksonville, FL 32256
(904)=20 642-6016
Lancair1@bellsouth.net

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