onetrack

Didn't anyone notice?? Those ladies are obviously in an operational aircraft area - and they're not wearing their Hi-Viz!!

I'm wondering if he had a lithium battery aboard somewhere? Looks suspiciously like a thermal runaway that is a classic Lithium fire.

I'm hanging out here, for a major media release. A good marketer keeps the flow of media releases up - you know, photos of the chief designer posing with Boeing senior execs - some incomplete, tantalising shots of work on "secret" aircraft panels - shots of row after row of manufacturing equipment, in a huge factory - tantalising snippets of articles released to hungry journos, touting, "new developments showing great promise!".

We're starting to despair here, Bex, with the deadly silence - you obviously need a charming PA with extensive media experience, and files full of amazing renders, promises, projections, and "flying models".

It's too easy. Get into your aircraft more often, and put the hours on it. If you own an aircraft, and only fly 8 hrs in a year, you'd have to seriously question why you need to own an aircraft.

As M61A1 says, machines only deteriorate worse with lack of use. When not being utilised, oil drains off surfaces that need an oil coating, to ensure corrosion doesn't occur - moist salt-laden air or severe changes in humidity make for moisture buildup. The little insects start to develop homes (spiders are a constant nightmare where I live, they breed like rabbits), and they can be as destructive as rodents. Then there's always the rodent problem, they never stop breeding, and looking for a new home.

Imagine if CASA/RAAus/GFA had been in charge of the internet. You'd now be using a 4800 baud dial up modem (OK maybe 300 baud), you would need a government issued licence to be an internet user, emails would cost 50c each to send and you would need an expensive licence and government approval to run a website like this one. Allow 6 months for that. There might even be government vetting of all posts. Would probably take 12 working days.

They would also check to see if you had been drinking within 8hrs of using the Internet. That check alone would eliminate a huge volume of Internet traffic!

Those David Ogilvie seats look about as comfortable as ... ahhhh ... park benches! But I have to admit, he's put some effort into making park benches look attractive.

Nothing tight about the turning situation there - it's just that that freight stand should never have been left in that position on the apron, where it was highly likely the next jet to be towed in, would hit it.

CorrosionX is made in a range of varieties for specific purposes - and they make an Aviation version of it.

CorrosionX - Aviation

Years ago I bought a lot of old Indian NOS parts, They had been stored immersed in diesel, The majority of them were useless. An even coat of quite thick rust was on all of them and since they were precision items I did my money.

The problem is, there is water in all fuels. There is an allowable water content in new fuel from refineries. Water gathers in fuels by condensation in partly-full or near empty tanks.

The temperature drops, then moisture from humidity in the air, forms on the metal walls of the tank, and it runs down to the bottom of the tank. Not for nothing do all good tank setups have a sump and drain tap.

Underground tanks suffer less from water buildup due to a fairly constant temperature - but they get water in them via rainfall events and flooding, coupled with poor design of filler necks and vents.

All good machine operators know to fill fuel tanks at night time, at knockoff time, to prevent water buildup in tanks via condensation.

Current diesel is ultra-low sulphur diesel, containing a maximum of only 10 ppm sulphur, from 1st Jan 2009. The sulphur content of diesel was rapidly reduced in the first decade of this century, down from 500 ppm in the early 2000's.

Department of the Environment and Energy

Marine anti-rust treatments are best used, if you're flying in coastal conditions with high levels of salt spray and high humidity.

Well, that's the AD to beat all AD's. Usually the result of an AD is just a hole in the roof of the hut.

The problem is, there's stainless steel, and there's stainless steel - and then there's Chinese stainless steel.

316 should be in standard use where corrosion is a potentially lethal problem - but it's often replaced by a stainless steel of lower corrosion resistance, such as 304.

304 stainless is simply a "general purpose" stainless steel, mostly used for commercial food production areas, and kitchens and household goods.

304 contains 18% Chromium and 8% Nickel - with no other added alloying elements. 304 is also often called "18/8 stainless" (the number referring to the Chromium and Nickel percentages).

316 is specifically designed for salty conditions. 316 contains 16% Chromium, 10% Nickel, and a minimum of 2% Molybdenum. The Molybdenum is added to help resist corrosion to chlorides (such as contained in sea water).

Chlorides are also dispersed from many other areas, such as industrial by-products, and many rocks and soil types - as well as coming from other types of naturally-occurring salts, such as Magnesium and Calcium salts.

Corrosion in stainless steel is normally caused by damage to the naturally-occurring "passivation layer" on stainless steels, or by undesirable inclusions in the stainless steel, such as Carbon steel, or chunks of foreign material such as ceramics from furnace linings.

Good quality stainless steels are pickled and passivated chemically, post-production, to provide a blemish-free passivated surface, that provides top-class corrosion resistance.

I can't even get Google to correct the glaring naming errors on their Maps - or even get some accuracy from them, as to places I've supposedly visited! So I don't hold many concerns as regards the accuracy or the threat by AI!

But I do have concerns about the initial faulty programming of AI by idiot nerds, who can't even get street names or places correct, now!!

The Farcebook employees who took down the image have probably never heard of Anzac Day, and have no understanding of the symbolism of Red Poppies.

But Suckerberg .. sorry Zuckerberg .. reassures us that all his employees in this area are fully trained, totally competent, on high salaries, and receive maximum company support ...

The Internet Cleaners

Wow, landing with fencing wire tangled around the MLG must have made for an interesting deviation in standard performance.

The guy didn`t want to do the tail wires but I convinced him on why he should ...

Safety-critical steel wire rope of any type, must be replaced when damage, wear or corrosion reaches 10% of the thickness of the wire. It is easy enough for corrosion pitting to reduce wire thickness by 10% or more.

There is a mind/eye relationship factor that is called "inattentional blindness" or "perceptual blindness".

This happens when one is focussed intensely on other tasks, and one sights something important - but that important item sighted, doesn't register in the brain.

The "gorilla test" is the classic example of this problem.

This event tends to happen even more as you get older, because it seems our focus can become more intense or narrowed with age, and we sight, but do not register obvious things in our brains.

People driving through obvious red traffic lights is one example of perceptual blindness.

I have watched a driver drive down the centre lane of a major arterial road, between cars stopped at a red light in the other lanes each side, and he/she just kept on going steadily through the red light.

I've done it myself - and frightened the living daylights out of myself, when it finally registered, and I realised what I'd done.

I would hazard a guess that the pilot of the King Air sighted the rudder trim in extreme left position, whilst being intensely focussed on other important preflight checks - and despite seeing the wrong position set for takeoff, it didn't register in his mind due to perceptual blindness.

A disaster where perceptual blindness was the major factor, was the Kerang train disaster.

The Kenworth truck driver sighted the oncoming train on his left quarter, well within his field of vision, and yet the train sighting failed to register in his mind, and he drove straight into the side of the train.

I believe perceptual blindness is a factor in many serious crashes, in both air and land crashes, yet it doesn't get a mention in many crash reports.

I have 2 Warren and Browns and 1 Norbar. Probably what most owners are missing is the informative W&B instruction sheet, which is near-on impossible to find today.

Remember that clean threads are a must when torquing fasteners (I run a bottoming tap through all threads that aren't new) - and whether you use thread lubrication or not is critical.

Lubricated threads will make a difference of 10% or more to actual torque applied to the fastener shank. Some manufacturers will specify whether threads should be dry or lubricated, many don't.

Usually fasteners are installed dry, but occasionally you will be desiring to add anti-seize to threads where corrosion potential, or the likelihood of galling, is very high.

Adding anti-seize to fastener threads effectively makes them a lubricated fastener, and the recommended dry thread torque setting should be reduced by 10%, when threads are lubricated.

The same principle applies to threadlocking compounds, they also lubricate the threads.

Trying to get 100% repetitive accuracy in torquing fasteners with simple torque recommendations, is very difficult.

Thus the reasoning behind the introduction of the "torque-angle" method, where a low torque setting is used initially to "bed" the fastener, followed by an additional set amount of turn, measured in degrees.

Torque and angle explained

I've heard of being "hung out to dry" - but that's taking it to ridiculous lengths!

Well, if the valve seat protection from lead oxide deposits, from leaded fuel, are a major furphy, and not true, perhaps you who all know better, had better inform SAE and the oil companies - who just happen to produce the fuels.

https://www.penriteoil.com.au/assets/tech_pdfs/Valve%20Seat%20Recession%20April%202015.pdf

Investigation of the Mechanism of Exhaust Valve Seat Wear in Engines Run on Unleaded Gasoline on JSTOR

Yes, the last lot of technical information does relate to automotive engines - but they were run at WOT for in excess of 10 hrs. This is equivalent to aircraft engine requirements.

Not specifically referring to aircraft and in fact seems to refer to cars and the removal of lead from car fuel

@ Mike Borgelt -

https://www.springer.com/cda/content/document/cda_downloaddocument/9789400778832-c1.pdf?SGWID=0-0-45-1443209-p176304584

@ Mike Borgelt -

In the 1920's TEL was regarded as quantum leap in fuel additives. When your spark plug fires, it ignites a flame front which travels through the combustion chamber, burning the petrol/air mixture.

TEL makes the flame front travel more slowly, and also less turbulently. Lead virtually eliminated engine knock. Overnight, compression ratios jumped from 4:1 to 7:1, and the modern high-output engine was born.

But TEL has even more benefits. When it burns, TEL turns into a tan-coloured layer of lead oxide, which covers the valves and the combustion chamber.

The valve heads hammer against the valve seats, several thousand times a minute. The lead oxide acts as a cushioning agent, and protects the valve head and the valve seats.

The lead oxide is also a lubricating agent. This lubricating action also reduces wear in the valve guides.

Facthunter, I didn't advise you to Google anything. You're confusing someone elses posts, with mine.

Diesels normally use stellite or stellite-faced valves and valves seats, and alloy steel or sodium-cooled valves, which component materials withstand the additional, and longer heat output, of diesel engine combustion chambers and exhausts.

https://www.engineaustralia.com.au/sites/default/files/engine_seb/SB020abs.pdf