John, Your replies have been showing up fine on the web site.
Kevin1 --- In [email protected], John Cooper <j...@...> wrote: > > On 8/14/2010 11:51 PM, new2coupes wrote: > > I discovered the REAL problem. Apparently, the nose tank removal was > > undocumented. > Here are my random thoughts on this issue. > > As previous owner of the "30 Gallon STC", the reason I didn't put it > into production is because it treats both tanks as a single tank but > does not include the appropriate plumbing to connect the air spaces in > the two tanks. Such plumbing is difficult to develop due to the extreme > dihedral of the wings. Any tube connecting the air spaces would have a > low spot in the center section that could effectively prevent it from > working. As you have seen, failure of the tanks to properly vent can > result in running out of usable fuel dispite there being plenty of fuel > on board. > > The solution is simple: a left-right-off valve. If you cannot > simultaneously draw fuel from both tanks, there is no issue. > > The same issues apply to your system. The only way I would be > comfortable with it is if it also incorporated a selector valve that > prevents simultaneous use of both tanks. I suspect that is the only way > you would be able to get approved, anyhow. > > You will need a field approval. If you can find a previously approved > (by field approval) 337 for an identical modification you should have a > fairly straightforward time of it. Otherwise, plan on a lot of > paperwork and probably a lot of money. A 337 that does not include a > field approval in block 3, regardless of how it was filed or how long > the plane has been flying, does not help much unless you are looking for > other owners in your predicament. > > > -- > John Cooper > Skyport East > www.skyportservices.net >
