tag:blogger.com,1999:blog-6060827553081940333.post2319449610732911849..comments2024-03-26T09:35:29.969-04:00Comments on Kathryn's Report: Aircraft Structural Failure: Hooley Jet Eze, N815EY; fatal accident occurred September 01, 2018 near Covington Municipal Airport (M04), Tipton County, TennesseeUnknownnoreply@blogger.comBlogger12125tag:blogger.com,1999:blog-6060827553081940333.post-72087917669913877212020-05-12T21:52:07.914-04:002020-05-12T21:52:07.914-04:00Sadly... an accident waiting to happen...very sad,...Sadly... an accident waiting to happen...very sad, yes fortunately no one else was injured or killedmartin moffitthttps://www.blogger.com/profile/11812578254869426661noreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-25678732114723895592020-05-01T17:06:12.067-04:002020-05-01T17:06:12.067-04:00Surely the winglets are that size since they'r...Surely the winglets are that size since they're also rudders...Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-50152150239735559292020-04-27T09:18:26.302-04:002020-04-27T09:18:26.302-04:00Sounds similar to the 1/2 scale Gripen that suffer...Sounds similar to the 1/2 scale Gripen that suffered fin flutter a while back, I bet it also had bonding issues!<br /><br />https://www.youtube.com/watch?v=8yf_QTbDeWMTord S Erikssonhttps://www.blogger.com/profile/09725523189872234731noreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-6137392978390826772020-04-21T13:15:26.019-04:002020-04-21T13:15:26.019-04:00Load factor, which increases with weight and speed...Load factor, which increases with weight and speed found a flaw in manufacturing. Rutan cautioned, in very strong terms about flutter.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-64102305412871389902020-04-19T11:33:08.999-04:002020-04-19T11:33:08.999-04:00I wonder if exceeding the Vne (to which he did not...I wonder if exceeding the Vne (to which he did not say what speed it was) accelerated this failure and weak point. While it's clear that there was a serious point of lack of core bonding and a gap in the spar, how much longer would the aircraft have flown under normal ops with never exceeding Vne in the first place? A failure was inevitable, but did that Vne push aggravate the flaw to Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-13472958687881833242020-04-18T10:07:44.242-04:002020-04-18T10:07:44.242-04:00Leaving no margin for error. Regretfully, there ar...Leaving no margin for error. Regretfully, there are no old, bold pilots! Harpazohttps://www.blogger.com/profile/13489945536588152016noreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-14015212558768171832020-04-16T07:47:25.544-04:002020-04-16T07:47:25.544-04:00Type A individual doing wet layups, perhaps he tri...Type A individual doing wet layups, perhaps he tried to wet more than one layer at a time. <br /> But those winglets! They are comically huge, 5 times bigger than necessary. Deficient spar workmanship trying to support Dumbo ears.Anonymoushttps://www.blogger.com/profile/10548444041021915844noreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-58963657693671380512020-04-14T09:02:37.008-04:002020-04-14T09:02:37.008-04:00what a terrifying final few seconds r.i.p.what a terrifying final few seconds r.i.p.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-4732735009215758262020-04-12T17:41:19.558-04:002020-04-12T17:41:19.558-04:00It is puzzling that both the top and bottom surfac...It is puzzling that both the top and bottom surfaces of that first ply of skin layup across the spar cap had dry areas (see discussion top of Pg. 3 in Materials Lab report).<br /><br />Application of resin and smoothing by spreader or roller forcing during hand layup will saturate through the fiberglass weave and produce a uniform translucent look across the worked area. One possible explanation Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-48727576758348614782020-04-12T08:39:44.698-04:002020-04-12T08:39:44.698-04:00This is a shocking and heartbreaking read.
I went ...This is a shocking and heartbreaking read.<br />I went to the August 2017 Kit Planes article to try to understand how this type of accident could occur.<br />Not having read this previously, my first impression was that of a snarky, almost arrogant type of interview. <br />Back to the accident photos...<br />The spar cap failure was not initially a de-laminate, The Spar was never properly Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-58056457569227056562020-04-11T00:45:21.873-04:002020-04-11T00:45:21.873-04:00They exceeded every parameter of this aircraft des...They exceeded every parameter of this aircraft design, engineering and (more importantly) structural load a by a wide margin. Burt Rutan has to shaking his head in disgust. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6060827553081940333.post-1283253884859722442020-04-08T11:29:40.539-04:002020-04-08T11:29:40.539-04:00This failure is a cautionary tale for those who bu...This failure is a cautionary tale for those who build or fly aircraft that rely on strength and integrity of hand-layup composite structures. The lack of resin impregnation (where the upper skin was supposed to bond to the spar) was never detected, resulting in failure and fatality in less than 100 hours of flight time on the aircraft.<br /><br />Commercial fabrication processes for composite Anonymousnoreply@blogger.com