X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 25 Jun 2008 09:01:57 -0400 Message-ID: X-Original-Return-Path: Received: from [70.62.14.124] (HELO server1.USTEK) by logan.com (CommuniGate Pro SMTP 5.2.4) with ESMTP id 2990534 for lml@lancaironline.net; Wed, 25 Jun 2008 08:43:29 -0400 Received-SPF: none receiver=logan.com; client-ip=70.62.14.124; envelope-from=r.simon@ustek.com MIME-Version: 1.0 Content-Type: multipart/related; type="multipart/alternative"; boundary="----_=_NextPart_001_01C8D6C1.80A89C28" Content-class: urn:content-classes:message Subject: Trim concern addressed X-MimeOLE: Produced By Microsoft Exchange V6.5 X-Original-Date: Wed, 25 Jun 2008 08:46:42 -0400 X-Original-Message-ID: X-MS-Has-Attach: yes X-MS-TNEF-Correlator: Thread-Topic: Trim concern addressed Thread-Index: AcjWwYTMyVeei96VQvuCm8at9IGGvg== From: "Lancair" X-Original-Sender: "Robert Simon" X-Original-To: This is a multi-part message in MIME format. ------_=_NextPart_001_01C8D6C1.80A89C28 Content-Type: multipart/alternative; boundary="----_=_NextPart_002_01C8D6C1.80A89C28" ------_=_NextPart_002_01C8D6C1.80A89C28 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I was out flying instrument currency when the cockpit got a little busy and I had a hard time trimming on approach, but then it settled down. Figured I was just a bit rusty. A few days later I took off and the plane insisted on climbing, would not level off, and I had to strong-arm the nose down until I could finally trim it level. No problems after that. Checked trim on the ground and it seemed fine. Same thing happened again a couple weeks later and I reached over to the copilot's stick where eventually I got it trimmed. Testing in the hanger where runaway is less critical to correct, I found that I could always get nose-up to run but nose-down was erratic, working fine at times and inoperative at times. Avionics Systems in Leesburg VA confirmed that the nose-down relay activated by the China hat switches had gone walkabout. =20 =20 I replaced the relay but got concerned: the relay had failed "open", but had it failed "closed" I would have had an even more eventful time controlling the plane. Thanks to someone on the LML or Lancair_ES group I had just read of a trim interrupt that would allow an on-time of 3 sec max. If the switch would freeze in the "on" condition I would have a trim problem that might be unpleasant but it would not be life threatening. So this week I am installing the Safety-Trim Intelligent Servo Controller (see http://www.steinair.com/trim.htm). =20 =20 On the other hand, I'll miss the gym-style workout on my left arm! =20 Robert M. Simon ES-P N301ES 614.538.8000 USTEK Incorporated 4663 Executive Drive #3 Columbus, OH 43220-3627 U.S.A. ------_=_NextPart_002_01C8D6C1.80A89C28 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I was out flying instrument = currency when=20 the cockpit got a little busy and I had a hard time trimming on = approach, but=20 then it settled down. Figured I was just a bit rusty. A few = days=20 later I took off and the plane insisted on climbing, would not level = off, and I=20 had to strong-arm the nose down until I could finally trim it = level. No=20 problems after that. Checked trim on the ground and it seemed = fine. =20 Same thing happened again a couple weeks later and I reached over to the = copilot's stick where eventually I got it trimmed. Testing in the = hanger=20 where runaway is less critical to correct, I found that I could = always get=20 nose-up to run but nose-down was erratic, working fine at times and = inoperative=20 at times. Avionics Systems in Leesburg VA confirmed that the = nose-down=20 relay activated by the China hat switches had gone walkabout. =20

I replaced the relay but got = concerned:=20 the relay had failed "open", but had it failed "closed" I would have had = an even=20 more eventful time controlling the plane. Thanks to someone on the = LML or=20 Lancair_ES group I had just read of a trim interrupt that would allow an = on-time=20 of 3 sec max. If the switch would freeze in the = "on" condition I=20 would have a trim problem that might be unpleasant but it would not be = life=20 threatening. So this week I am installing the Safety-Trim = Intelligent=20 Servo Controller (see http://www.steinair.com/trim.ht= m). =20

On the other hand, I'll miss the = gym-style=20 workout on my left arm!

Robert M. Simon

ES-P=20 N301ES

614.538.8000

USTEK = Incorporated

4663 Executive Drive=20 #3

Columbus, OH = 43220-3627 =20 U.S.A.

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