div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentpetrel-scale-soaring-13-petrelalas-non-were-forthcoming-but-in-the-processhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: petrel - Scale Soaring 13 PetrelAlas non were forthcoming but in the process I took a Closer look this machine via the pages of Martin Simon S excellent book on Slingsby Sailplanes loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader031fdocumentsusreader031viewer20220304185aa47f657f8b9a7c1a8c3742html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=documentpetrel-scale-soaring-13-petrelalas-non-were-forthcoming-but-in-the-processhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: petrel - Scale Soaring 13 PetrelAlas non were forthcoming but in the process I took a Closer look this machine via the pages of Martin Simon S excellent book on Slingsby Sailplanes loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader031fdocumentsusreader031viewer20220304185aa47f657f8b9a7c1a8c3742html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=documentpetrel-scale-soaring-13-petrelalas-non-were-forthcoming-but-in-the-processhtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: petrel - Scale Soaring 13 PetrelAlas non were forthcoming but in the process I took a Closer look this machine via the pages of Martin Simon S excellent book on Slingsby Sailplanes loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII=...