tag:blogger.com,1999:blog-6060827553081940333.post2998281460848738742..comments2024-03-28T21:15:11.065-04:00Comments on Kathryn's Report: Phase I Flight Test: Lockwood Aircraft AirCam, N123GN, fatal accident occurred June 08, 2019 at Hemet-Ryan Airport (KHMT), Riverside County, CaliforniaUnknownnoreply@blogger.comBlogger15125tag:blogger.com,1999:blog-6060827553081940333.post-24055764449083298762019-07-06T11:57:43.142-04:002019-07-06T11:57:43.142-04:002 dimples should be placed inboard of the bolt hol...2 dimples should be placed inboard of the bolt hole on each leg of the wing strut attach fitting. Add a note stenciled "only one dimple should be visible". <br />The strut tubing would cover the dimple closest to the bolt hole when inserted to the correct depth. <br />Alternatively a witness hole in the wing strut could be used but it may allow water to enter and cause corrosion unlessjohn schreiberhttps://www.blogger.com/profile/16094515682263638479noreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-12856298283574122682019-07-06T11:02:07.862-04:002019-07-06T11:02:07.862-04:00A check list of critical air frame attachment poin...A check list of critical air frame attachment points and flight controls would be good idea for first flight. If you have a good air frame and flight controls give you a chance to walk away from a first flight.Mike-Smithhttps://www.blogger.com/profile/08252696519545321781noreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-45008385397841219722019-07-03T10:00:12.074-04:002019-07-03T10:00:12.074-04:00Amazing that such a simple check like lifting the ...Amazing that such a simple check like lifting the wing tip wasn't performed.<br /><br />It seemed to have been a very happy event, with lots of people wanting to share the first flight, and then something this basic is missed.<br /><br />No secondary load paths, like load-carrying wire inside the strut, or a beam across connecting the two wing halves.<br /><br />I believe in secondary load Tord S Erikssonhttps://www.blogger.com/profile/09725523189872234731noreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-40978416609934944672019-06-29T01:07:56.147-04:002019-06-29T01:07:56.147-04:00How about grabbing the wing at the tip and giving ...How about grabbing the wing at the tip and giving it an up and down shaking. I was taught that with the Citabria's and Decathlon's I fly.av8rdavhttps://www.blogger.com/profile/09316918466230659392noreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-5584754372815997482019-06-23T23:38:23.735-04:002019-06-23T23:38:23.735-04:00A simple pre measurement and a piece of masking ta...A simple pre measurement and a piece of masking tape for visual reference would have worked great attaching the bolt to the strut. If you see a gap between the tape line and the bottom of the strut then the hole was not captured by the bolt. Such a shame.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-80824735206168325762019-06-23T17:41:13.140-04:002019-06-23T17:41:13.140-04:00Note to the last poster regarding ...
"I wo...Note to the last poster regarding ... <br /><br />"I would guess that tightening of the bolts that weren't through the brackets created enough pinching force on the strut bracket that it seemed tight"<br /><br />Agreed, and additionally ,aviation bolt grip length means just that. If you look at the image posted, you will see that the nuts appear to be tight to the last thread, then Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-911768253652875312019-06-23T13:50:01.967-04:002019-06-23T13:50:01.967-04:00Very sad indeed-
A couple builder (RV7)/Pilot co...Very sad indeed- <br /><br />A couple builder (RV7)/Pilot comments but just my own $.02. I agree with the wing shake n preflight (on any plane). I have flown several old Cubs, Champs, Cessnas with high wings and struts and always felt this was a good idea, especially when there were fairings hiding the strut bolts externally and spar bolts internally. Also, do it on low wingers-- I think it was Unknownhttps://www.blogger.com/profile/15259881359395323577noreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-91982419636104433842019-06-23T11:10:06.745-04:002019-06-23T11:10:06.745-04:00Seems to me that this is partly a design fault wit...Seems to me that this is partly a design fault with the manufacturer. There's enough that can go wrong even in a perfectly constructed homebuilt aircraft so shouldn't critical elements like strut to fuselage frame brackets/attachements be designed and engineered such that they _cannot_ be assembled incorrectly ? A sad story and experience especially for those friends and family that Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-39128604205549536592019-06-23T01:24:27.742-04:002019-06-23T01:24:27.742-04:00Only X-Rays may have shown the glaring defect.
or...Only X-Rays may have shown the glaring defect.<br /><br />or looking at the fitting and not seeing any bolt in it...T Ibachhttps://www.blogger.com/profile/02764487409231597866noreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-40213018553105762842019-06-21T16:49:17.776-04:002019-06-21T16:49:17.776-04:00It is ultimately the responsibility of the PIC and...It is ultimately the responsibility of the PIC and builder to maintain the safety of the flight.<br />The DAR only gave a special airworthiness certificate for test flying the plane in a very limited manner.<br /><br />It also seems the struts were solid and lifting the wings may not have detected this anomaly as they were simply wedged in the fittings.<br /><br />Only X-Rays may have shown the Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-51762333312724625502019-06-20T18:20:27.012-04:002019-06-20T18:20:27.012-04:00Amazingly this aircraft had been inspected by eith...Amazingly this aircraft had been inspected by either the FAA or a DAR and given an Airworthiness Certificate.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-19816227037261190012019-06-18T20:22:37.503-04:002019-06-18T20:22:37.503-04:00Any airplane with wing struts should have one impo...Any airplane with wing struts should have one important step in the preflight, lifting up repeatably on each wing tip. Many years ago a piper cub pilot did this, and one strut separated. I’ll never forget that.Leohttps://www.blogger.com/profile/01754612542735454220noreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-42569245587030735502019-06-17T09:53:08.431-04:002019-06-17T09:53:08.431-04:00The left wing struts were not bolted through the s...The left wing struts were not bolted through the support on the fuselage the struts were not placed far enough down the fuselage bracket.looking completed with the bolts in place they were actually not attached .very sad such a simple but critical mistake cost this man his life on what should have been a great day.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-61439047146406990342019-06-17T09:26:16.512-04:002019-06-17T09:26:16.512-04:00Not necessarily... but the first few hours of any ...Not necessarily... but the first few hours of any brand new plane are critical. This is why high speed taxis and slight hovers are best and recheck the airframe and components for anything amiss meticulously.<br /><br />Youth errors are a thing. This is why teenagers crash cars at the same rate as 80 year olds.<br /><br />Youth error - maturity - old age. Bathtub reliability curve.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-48160641373336424982019-06-13T17:15:06.852-04:002019-06-13T17:15:06.852-04:00Missed something on the construction.
RIPMissed something on the construction.<br /><br />RIPAnonymousnoreply@blogger.com