X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 17 Jun 2014 16:07:39 -0400 Message-ID: X-Original-Return-Path: Received: from vms173007pub.verizon.net ([206.46.173.7] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTP id 6938280 for lml@lancaironline.net; Tue, 17 Jun 2014 14:28:18 -0400 Received-SPF: none receiver=logan.com; client-ip=206.46.173.7; envelope-from=Adam@ValidationPartners.com Received: from VpiWorkstation1 ([unknown] [69.124.233.79]) by vms173007.mailsrvcs.net (Sun Java(tm) System Messaging Server 7u2-7.02 32bit (built Apr 16 2009)) with ESMTPA id <0N7B00J4ZSLTBMM0@vms173007.mailsrvcs.net> for lml@lancaironline.net; Tue, 17 Jun 2014 13:27:34 -0500 (CDT) From: "Adam Molny" X-Original-To: Subject: Legacy flap buzz above 160kts X-Original-Date: Tue, 17 Jun 2014 14:27:22 -0400 X-Original-Message-id: MIME-version: 1.0 Content-type: multipart/alternative; boundary="----=_NextPart_000_0359_01CF8A38.43A2AD10" X-Mailer: Microsoft Office Outlook 11 Thread-index: Ac+KWcfWUnyfyajCTVCgJLWq+JPqtw== X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 This is a multi-part message in MIME format. ------=_NextPart_000_0359_01CF8A38.43A2AD10 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I have had this problem intermittently for the past year or so, but now = it is becoming a regular occurrence. When I go above 160KIAS I get a loud buzzing sound throughout the airframe. I cannot feel it through the = control stick. I can make the buzz stop by loading the wing slightly with g=92s = or by extending the flaps about =BE=94.=20 =20 There is a line of rub marks on the top side of the flaps where they = meet the trailing edge wing skin. I initially thought the skin was vibrating since it is fairly flexible there, but now I=92m not so sure. If I = partially extend the flaps on the ground I can feel a fair amount of up-and-down = play in the flap hinges. I haven=92t had a chance to disassemble the hinge = pin yet. =20 Has anyone else had this problem? If so, what was the cause and how did = you fix it? =20 Thanks, Adam Molny Legacy N181AM, 240 hrs ------=_NextPart_000_0359_01CF8A38.43A2AD10 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I have had this problem intermittently for the past year or so, but now it = is becoming a regular occurrence. When I go above 160KIAS I get a loud buzzing sound = throughout the airframe. I cannot feel it through the control stick. I can make the = buzz stop by loading the wing slightly with g’s or by extending the = flaps about =BE”.

 

There is a line of rub marks on the top side of the flaps where they meet the trailing edge wing skin. I initially thought the skin was vibrating = since it is fairly flexible there, but now I’m not so sure. If I partially = extend the flaps on the ground I can feel a fair amount of up-and-down play in the = flap hinges. I haven’t had a chance to disassemble the hinge pin yet. =

 

Has anyone else had this problem? If so, what was the cause and how did you = fix it?

 

Thanks,

Adam Molny

Legacy N181AM, 240 hrs

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