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On Jul 15, 2:32*am, Darryl Ramm wrote:
On Jul 14, 8:26*am, Craig wrote: On Jul 13, 5:36*pm, Darryl Ramm wrote: On Jul 13, 5:29*pm, Craig wrote: On Jul 13, 4:29*pm, Frank Whiteley wrote: http://rgl.faa.gov/Regulatory_and_Gu....nsf/list/2010... Effective July 19th, 2010 Am I reading correctly that no aerobatics are permitted after July 19th regardless of the outcome of the inspection? Thanks, Craig Yes. That seems very clearly stated. Darryl Yes, I thought it was clearly stated too, just so draconian that it was a bit difficult to believe. *No exit clauses based on total hours, etc. Cheers, Craig I don't see it as draconian. I see it as appropriate for a glider type that has had a spar failure/fatal accident and the TC owner, EASA, and FAA are allowing the type to keep flying after inspection and while collecting critical data on cracking. You guys need to wait until the field data is in and maybe you'll have a case to try to remove limitations, but I'd not hold my breath. Darryl A whole lot of the field data is in. The highest hour Blaniks have always been in Australia and a large amount of work has already been done. The AD below was issued in 1989: http://2009.gfa.org.au/Docs/ADs/gfa%...0issue%201.pdf In summary, it reports the major fatigue susceptibilities of L13s and gives various ways of extending the life. The lower wing carry through plays a starring role. One solution involving new Hi-Loc fasteners and an eddy current inspection schedule is laid out in the AD's Appendix B and in the earlier (1984) AD160: http://2009.gfa.org.au/Docs/ADs/gfa%...0issue%202.pdf This extended L-13 life to 12000hours and 50,000 launches - but it does recommend that aerobatics be limited to practice spins. I don't know the current permitted Blanik life in the US and Europe but the original LET were reluctant to get involved in this 70s and 80s life extension work in Australia. I believe their view at the time was that the glider was designed for 3000 hours (IIRC ?) and that is where it should stay. I'd not be surprised if the current TC holders were happy to see most L-13s scrapped. As Darryl says - don't hold your breath. GC |
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