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Aero History Update

14/4/2012

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Lessons in Linen

Plans are afoot for a BE2a to be completed in time for the centenary of the establishment of the Central Flying School at Point Cook, in 2014. The gift of this aircraft to the RAAF Museum, and the Australian nation, will complete the Museum's 1914 'story'; it already possesses a reproduction Deperdussin presented by Mr Jack Gillies, and, nearing completion, an airworthy Bristol Boxkite being built by Messrs Rob Gretton and Geoff Mathews who are members of the Friends of the RAAF Museum.

Andrew Willox is also a Friend of the Museum and has been planning and undertaking work on the BE since the beginning of 2007. Initial planning for a rudder was undertaken with the assistance of Transaero and work has proceeded to the completion of one example. Three rudder frames have been made in anticipation of perhaps completing more than one BE variant in due course, but the project's main thrust is the delivery of a BE2a for Point Cook.

Original specifications have been used to construct the first rudder, which is of all-steel construction. Traditional methods have been used to make the various components in a blacksmith's forge; the most complex tool used being a lathe. The ribs were cut out and fashioned by hand, although originally they would probably have been pressed out. The three hinge pairs on the rudder post were carved by hand from square bar and individually matched together and only oxy acetylene welding was employed, with solder used where specified to seal the rudder frame. Although modern aerospace metals were used for the rudder frames, ordinary mild steel will be employed throughout the rest of the aircraft as it is easier to fashion. Modern metals still rust and can provide no greater integrity for aircraft designs from this earlier period.

Traditional unbleached ‘Irish’ linen fabric to BS7F1 was imported from Belgium, being identical in quality but at a lower cost to an Irish mill. After fitting anti-chafe strips to the frame where it would contact other fabric, the pocket method was employed to fit the overall covering. Durabond in Sydney make a good-quality tautening dope and this proved to do the job well. Sewing and lacing thread was imported from LAS Industries in Britain. Finishing tapes to seal the lacing and outer edges were hand frayed and doped on to complete the fabric covering. At the present stage six coats of dope have been applied but to provide an airworthy finish a further four to six coats will be needed.

The rudder has been fitted to a presentation stand was on display in the Antique Aeroplane Association of Australia marquee at the Avalon International Airshow 2009.

Andrew Willox
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The completed rudder fitted to display stand for Avalon 2009
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Biggest Morning Tea Fly-in Kyneton 2012

8/4/2012

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For the fifth year running Transaero will host Australia's Biggest Morning Tea to raise money for the Cancer Council of Victoria.  Once again the event will be held at Kyneton Airfield with the generous assistance of the Kyneton Aero Club.

Aviators are encouraged to fly-in to Kyneton to enjoy morning tea in the hangar.  All we ask in return is that you make a donation to the Cancer Council. 

Non-flyers are also most welcome; the Airfield is on Kyneton-Metcalfe Rd just north of the Kyneton township. There is plenty of parking and it is a great opportunity to see a huge range of aircraft up close.  The event is a perfect opportunity for Macedon Ranges locals to visit the Kyneton Airfield and enjoy morning tea while supporting a worthy cause.

Fly-in visitors will apreciate two runways and plenty of parking on the grass.  See the ERSA entry for fly-neighbourly advice, and visit the Aeroclub website for more information www.kynetonaeroclub.org

This event would make a great destination for car and motorbike club outings, as well as Aero Clubs.  If you have a group you would like to bring, please contact Kim and advise expected numbers so we can ensure there is enough food.  Phone 9744 7228 or 0418 100 028.

Download pdf brochure 
Visit the Kyneton Aeroclub website

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Radio Equipment Upgrades

1/4/2012

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Changes to VHF Channel Spacing- more equipment upgrades?

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Hopefully everyone has recovered from the changes to the distress beacon requirements, and subsequent outlay on new equipment, because you could be forced to upgrade your radio next.  Soon, in fact. 

If you have an old VHF radio, which is not uncommon considering almost half of the General Aviation fleet in Australia is more than 31 years old, you may be forced to upgrade very soon.

Airservices Australia is responsible for assigning VHF aeronautical frequencies in Australia.   Due to increasing number of frequencies being assigned they are struggling to continue to find interference-free frequencies for use in high traffic areas.  To overcome the problem frequency spacing has been reduced from 50khz to 25khz.

We have been warned this was coming.  In September 2005 Airservices Australia and CASA told us about the pending changes in AIC H11/05.  There was also an article in Flight Safety Magazine (Channel Squeeze) around the same time.  At the time, the real effect was too far in the future for most pilots and owners to worry about.   The first to be affected was the high-flying IFR traffic in Class A Airspace (Nov 2005), next in line in November 2006 was Class C, D and E airspace users in high density traffic areas.  I bet you didn’t even notice.  There are relatively few frequencies at 25khz spacing, so you may not have needed to use any yet.  Is it something you check during flight planning? 

CAO 103.25 (receiving) and CAO 103.24 (transmitting) tell us “The frequency range and number of channels must be adequate for the intended operational purpose of the equipment” which means, if you don’t need to use a 25khz spaced frequency, you don’t need to have a radio capable of transmitting and receiving at 25khz spacing.  That’s a relief.  So, all you need to do is check your charts before you go, and as long as there are no tricky frequencies (118.02, 134.32 etc) along the way, you can continue to fly with your antique equipment. 

This will continue to be the case; however it is going to become more difficult to practice.  Bruce Bilton, CTAF frequency assigner at Airservices Australia, has advised that in high density areas 25khz spacing of CTAF frequencies is a year away at the most.  Anyone flown at Kyneton and heard aircraft at Geelong and Barwon Heads?  It can get busy and confusing at times with these areas sharing a frequency. 

So if you fly at CTAF’s around the major east coast cities, it is highly likely you are going to be affected by the new frequency spacing in the next year or so. 

Let’s get clear on who has to do what. 

If your VHF radio displays 3 decimal places, e.g. 118.025 can be dialed up and displays on your radio, you are not affected; your radio supports 25khz spacing.

If your VHF radio displays 2 decimal places you need to check if you can dial up frequencies like 118.02, 118.17.  If you can, that’s great, you are not affected.

If your VHF radio goes straight from 118.00 to 118.05 when you turn the knob, you have a 50 khz antique and this article was written for you, read on.

The next thing to do is consider the area you operate in.  Anyone regularly flying in controlled airspace or flying IFR should already have upgraded, but if your home base is Broken Hill, and your biggest cross country is to Menindee to see a mate, you will probably not need to take any action at all.  If you operate in the maze of CTAF’s on the outskirts of Melbourne or Sydney, or in South East Queensland, you should plan an upgrade soon.

An upgrade shouldn’t be too heart breaking if you are constantly having problems with your old radio.  They are expensive to repair these days, and once they start to have problems it is usually the beginning of the end. 

For VFR aircraft, a new Icom A-210 non TSO’d is about $1500.  For IFR aircraft a TSO’d radio is needed, and these start at about $5000.  In order to install a new radio (or anything new) in a certified aircraft you will need CAR 35 approval.  This is where it starts to add up.  You need design drawings to show how the radio will be mounted, a wiring diagram, an electrical load analysis and weight and balance change calculation.  Once the CAR 35 approval is received, the installation begins.  Removal of the old radio, manufacture of mounting brackets, wiring new radio, materials and a possible new antenna all add up.  You would need to budget at least another $2000 for the installation and associated approvals and documents.  If you are considering upgrading anything else in your panel, this would be the time to have it done as the installation cost will only increase slightly for each new item installed at the same time (of course the purchase of the new gear could easily blow the budget).

If you have one of these antique radios and can’t bear to part with it (it works perfectly- why throw it away?) you could consider having a more modern radio installed as a second radio.  Two radios are really quite useful, and it won’t matter if only one of them is capable of the 25khz spacing.  You may have to factor in the additional cost of an audio selector panel.

In the information issued in 2005 regarding changes to frequency spacing, there was mention of CASA introducing new frequency stability requirements of 0.003% from November 2009.  That would mean that even if you could get by with your old radio with 50khz spacing in your operations, your radio would have to comply with the new requirement (which stops transmissions from ‘spilling’ over and jamming adjacent frequencies).  Many of the older radios would be unable to comply, and therefore no longer be approved for use.  No NPRM has been issued by CASA on the proposal and current information suggests this won’t be happening now.  AIC H03/09 is the latest information on the topic, issued by Airservices Australia.  They have confirmed upgrade of equipment is not mandatory, and only required if 25khz spacing is needed for your particular area of operation.

Article by Kim Skyring






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    Kim Skyring
    Transaero Pty Ltd

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