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djpacro

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Posts posted by djpacro

  1. Stefan, if you haven't got any answers yet, send me a PM and I'll try to put you in touch with a friend of mine from the UK recently immigrated here as an aero engineer and in a similar situation. He flies at Bacchus Marsh and had a look at Sportstars at Moorabbin.

     

    What company do you work for?

     

     

  2. We can learn a lot from the USA ...

    Incidentally, the USA rules do not permit any changes to certified max weights in order to sneak a type into the LSA category.

    (All of this discussion has helped me to finalise my own response to the DP on mass increase for the RAA. Thanks.)

     

     

  3. Some comments on a variety of issues here:

     

    REGULATORY

     

    The existing regulation doesn't easily provide for aerobatics in the RAA unlike the draft Part 103 where there are specific rules.

     

    I am not optimistic about the new suite of regulations including Parts 61, 91 & 103 etc ever being implemented however I firmly believe this would be the best way to go so I'm not inclined to take the pressure off CASA. In particular, the CASA intent to provide for parallel pathways will mean that I can stay with VH reg and enjoy the privileges only enjoyed now by RAA reg.

     

    It is tempting to continue to weasle changes in by tinkering with the existing regulatory structure but it is well beyond time that CASA and the OLC finished their regulatory reform programme. The current set of regs overall is abysmal.

     

    SAFETY CASE

     

    We can learn a lot from the USA (compare their safety record with ours for a start) with their much larger population sample.

     

    Their LSA permits aerobatics in appropriate airplanes and the medical requirements are similar to that of the RAA.

     

    Who mentioned training? Neither the UK nor the USA have an aerobatic endorsement nor a regulation requiring aerobatic training. I'm not suggesting that the CASA rules be discarded on this. Plenty of capability within the RAA membership.

     

    For the RAA to take on registration of 30-40 year old aeroplanes having 10,000 hours or so of time in service including aerobatics - - hey, that already carries with it the technical issues associated with aerobatic aeroplanes regardless of whether they fly aerobatics in future or not. Apparently the RAA has stated that there is no concern with maintenance.

     

    RAA ORGANISATION

     

    I'm a member so I get a say on the above.

     

    It makes some sense for the RAA to take the word “recreation†out of their name and stick with a limited scope of activities. However it was the RAA which drove the current discussion paper to increase the weight for their aeroplanes which will result in an enormous increase in the number of RAA-registered aircraft quite capable of aerobatics.

     

    As above, CASA should implement the new regulations and provide for parallel pathways. I'm happy to stay VH reg with CASA as some have suggested - I for one can do without being associated with an organisation which seems to condone open neglect of CASA regulations wrt flying grossly overweight.

     

     

  4. In the discussion paper for the mass increase to 760 kg, RA-Aus states no concern with maintenance of types like the Cessna 150. I'd be very surprised if any LAME considered that a Cessna 150 Aerobat was more challenging than a straight one.

     

    We're not discussing Pitts etc in this context.

     

    Even if RA-Aus based that comment on no aerobatic ops in RAA they must've considered a 10,000 hr Aerobat being transferred over. All that history is just as important, if not more important, than what the aeroplane does today.

     

    I'm with nong.

     

    The USA allows aerobatics with their LSA rules inc similar medical requirements.

     

    We certainly have the knowledge and instructors.

     

    My current view is that if RA-Aus does not allow aerobatics with the mass increase then I'd oppose the RA-Aus proposal.

     

     

  5. The new SB on the flop tube.

     

    The old SB on the flop tube (degradation of the Aeroquip 601 hose) is now superseded but everyone should have done that anyway. This was an inspection and replace if necessary plus subsequent regular inspections.

     

    The current issue is specific to Stratoflex hoses manufactured within the last 5 years however the SB requires replacement of all hoses in all model Pitts. Doesn't make sense to replace something un-necessarily especially as it is not an easy job. However this problem can arise with old hoses so regular inspection is essential - no life specified for these hoses but I'd replace at the same time as the engine hoses.

     

    Easy enough for a pilot to check for a stiff tube and one which does not rest on the bottom of the tank. Apart from not supplying fuel when inverted it will also significantly increase unusable fuel in upright flight.

     

    Yenn's recent post in another forum about a cowboy reminded me of an Australian specific AD about fuel tank caps. Now that CASA is reviewing these AD's and the cowboy has gone perhaps this AD will also go.

     

    (I trust that this thread will not get hijacked like the other one - beats me what a Pitts User's Group has to do with aerobatics in the RAA)

     

     

  6. Just saw this forum and couldn't resist kicking it off! A timely change (thanks Ian) as the aerobatic "season" in the SE corner of the country is just starting.

     

    One of the good things to come out of CASA in recent years is CAAP 155-1 - Aerobatics which is available at http://www.casa.gov.au/download/CAAPs/ops/155_1.pdf (270 kb file)

     

    Lots of useful information and good advice there. It is essential reading for all aerobatic pilots and one of the basic references for anyone just learning.

     

    Its not perfect as it had a number of contributors and some disagreement on the content. It owes a lot to the FAA AC 91-61 and we were unable to really do much about anything from that document that we disagreed with. I had a go at trying to change AC 91-61 but was unable to attract much interest.

     

     

  7. Lilydale has a club but it may be too GA oreinted as to may the RVAC. I would need to hire an aircraft & it needs to be RAA reg for me - have you had any contact with Lilydale areo club? I know that the school there has a J160.

    MrH, happy to talk to you and tell you what I know about the local scene. RVAC is changing as you might gather from that other thread. The Lilydale Club is separate from the Lilydale Flying School - their RAA-registered Jabirus seem to be going very well.

    I may drop into both airports myself today for an update on what's happening.

     

     

  8. would love to fly into the show and experience the landing

    Thoroughly recommended, I've flown in twice, works well.

     

    Did you get the feeling that as far as aviation goes that maybe you are living in the wrong country

    Totally agree.
  9. Iinteresting story, thanks. Inadequate structural analysis seemed to be at the heart of the Fisher I issue. http://www.fisherflying.com/news/newsletters/2000-summer.pdf

     

    Configuration is somewhat similar to the Husky which was the last wing I did a detailed analysis of.

     

    I have some faith that Cessna engineers would have done a rigourous analysis and I know they have done structural tests.

     

    PS - I didn't even compare it with the 150 at Oshkosh. I do like a refurbished 150 or 152 Aerobat personally.

     

     

  10. That effect is the opposite of what you would want. When you get an increase of lift as in a gust, the last thing you want is for the wing to twist and increase the AoA further.

    .... and I'm sure the Cessna doesn't do that. The strut seems to be forward of the wing torsional axis so any tension in the strut would seem to me to pull the leading edge down (and reduce angle of attack).Its not the only aeroplane where the strut is swept to improve access.

     

    The rearward placement of the strut attach point also puts more load into the rear spar ( compression. Nev.

    ... depending on the load case. The high angle of attack, high G at Point A on the flight envelope has a large forward load which would seem to me to be reacted quite neatly by the swept strut.
  11. "sad news"? No surprises for me. They didn't appear to stint on engineering and other non-recurring costs. Doesn't seem to have been designed with low manufacturing costs high on the list of priorities. Not a cheap part of the world for labour.

     

    At risk of being a heretic, that is why I bought the Citabria.

    I agree, the 7ECA will be a useful aeroplane when the new rules come in. Still available new.
  12. Dunno, I can only assume that the French had the appropriate permits. I see that the Red Bull pilot has an FAA pilot certificate for helicopter aerobatics. I don't know what that means as the FAA does not have any requirement for aerobatic training or aerobatic endorsement. Perhaps it is a reference to an airshow waiver for low level aerobatics in a helicopter. I see that the helicopter itself has an Experimental certificate.

     

     

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