onetrack

It is vapour, but it's not a lock as we know it. The fuel is still flowing, but vapour is forming in the filter canister - which vapour is not transferring to the fuel line.

A vapour lock is a serious amount of vapour in the lines that won't return to the liquid phase, and which causes engine stoppage.

But the vapour in the "empty" filter is just a vapour bubble which easily transitions back to liquid. I would have to opine the temperature of the line and the reduction in pressure caused by fuel pump suction are the two major factors at work, with the pressure reduction probably playing the primary part.

......regularly avoid becoming visible. This cute trick was one that bull studied at great length, because there were many times when bull wished he was invisible - particularly when word got around, about his previously-unknown highly illegal exploits in a Jackaroo, which he'd rather not become general knowledge.

Then came the day when the identification of illegal immigrants in Tasmania was raised, and everyone in the room turned to look at bull. 

Bull wished he'd brought his Snuffleupagus outfit that day, as he tried to make himself invisible without it. But his invisibility act failed, and he was obliged to.........

FWIW - It pays to remember that if you get even a small amount of water in your fuel, it will block those pleated paper elements very rapidly.

I'm amazed that Jabiru recommend the use of a paper pleated fuel filter, and particularly a cheap plastic one.

Re the "empty-looking filter", this is the result of a vapour pocket. In the link to a discussion below, a poster named "mownie" posts an initial reply which is largely correct, but his reply is very convoluted, and the problem is not clearly outlined.

But "mownies" second reply, further down the page, more clearly outlines how the vapour pocket appears, and how it is common to see. His second answer starts with, "I have observed this phenomenon for decades now".

https://www.houzz.com/discussions/1661558/fluid-dynamics-of-an-empty-looking-fuel-filter

....it was knockoff time, so he let OT go, and went home to his .......

.....when you've carried out this maintenance, you'll find the device extension will work admirably at all times, and the extra speed generated, will bring about.......

......decided he would try a different approach. "Oh, I haff en Beast, for sure. But you're looking at ze beast - wiz me, you don't just get a weapon that the owner can't use properly - you get the animal that goes with it! Remember, it's not the size of the weapon, but how it's used, that matters!"

"Oooohh, you naughty boy!!", the BBW exclaimed in delight. "I am lookink forward to zis wiz excitement, it must be better than.........

......to see what gourmet delights the ladies had on offer. He sighted some meat dishes and asked politely what the meat content was. "Rabbit", said one of the ladies. "Horse", said another. "Tassie Tiger", said a third one. "Leopard Wombat", said a fourth one. "Tasmanian Stork" said a fifth one.

"They're all pulling your leg", said a sixth lady (the big buxom one). "There's no rabbits, horses, Tassie Tigers, Leopard Wombats or Tasmanian Storks left, in this neck of the woods, they all got shot to extinction by the CT Clan, who were notorious at shooting at anything that ran, hopped, crawled, or flew!"

"O.K.", said Turbo, stroking his chin thoughtfully. "I must say, the only Tasmanian Stork I've ever seen, was on an Apple box. But I'd still like to know what this mysterious-looking meat is?"

"We'll let you into a little local secret", said the big buxom lady. "We use the meat from..........

There's a substantial difference between being spooked by paranormal experiences, and premonitions. Premonitions are more common than generally believed, and some are just "general" premonitions, while others are very specific.

I can recall one story of one woman on a passenger flight becoming distraught upon passenger embarkation, stating that she didn't want to take the flight, because she knew the aircraft would crash.

The flight authorities got heavy handed and forced her on board, and the flight took off as scheduled. The aircraft crashed and there were no survivors. I don't believe it's a good thing to go against feelings of bad vibes for upcoming events.

Convair NC-131H simulator aircraft. Anything with that style of setup would have to be a test bed or simulator.

Peter, just read all the threads you want to read, then click "mark site read" on the upper RHS, and the thread will disappear. This is a known problem with the forum software, I don't know if Ian can fix it.

I recall numerous other air disasters where pompous military leaders insisted on flight or landings against aircrew advice, which lead to those individuals being wiped out.

The Smolensk air disaster come to mind, whereby the C-i-C of the Polish Air Force is reported as pressuring the aircrew to land in poor conditions - and the death of Air Chief Marshal Sir Trafford Leigh-Mallory in 1944, who insisted that his flight to Ceylon take place in seriously adverse weather, against the pilots advice - which flight resulted in their aircraft doing a CFIT into the French Alps, with no survivors.

I was under the impression from the reports I read that the Bagram crash was due to a deficiency in the number and type of tiedowns for the armoured vehicles they were restraining.

The NTSB report states the main reason for the crash as, "inadequate procedures for restraining special cargo loads, which resulted in the loadmaster's improper restraint of the cargo".

It's all too obvious the training received by the loadmasters in both the Pushkin and Bagram crashes was completely inadequate. The Tupolev just might have got off the ground overloaded, but the two 500kg rolls of newsprint rolling backwards on takeoff, sealed its fate irrevocably. There have been numerous air disasters caused by improper loading techniques, and one would think the loading systems would have been set in stone, long ago.

Below is a fascinating story of a Tupolev TU-104 crash at Pushkin in 1981, that decimated the USSR's Pacific Fleet Command and leadership.

The Communists lost 16 Admirals and many other high-ranking officers amongst the 50 people killed, in a takeoff crash that was unsurvivable.

And when you find out that the simple cause of the crash was the complete and total greed of the Admirals involved, you gain some understanding of the dysfunctional state of the USSR at that time.

What is even more startling is that the Communists initially believed the crash could only have been an act of sabotage by the West, such was their inability to understand that their whole military and governmental systems were seriously flawed.

Probably even more concerning is that the crash records and investigation were classified, and kept from any public records - and even the relatives of the deceased - for nearly 20 years.

.......the pilots consuming the horse meat pies, now had long faces as a result, and this led to a vastly-increased demand for bridles and bits, which enabled better control of those pilots, when they became inclined to shy away from......

SkeeterJr, there's a classifieds section of the forum that your sale item should be lodged in - not under the "General Discussion" forum. Look on the menu on the LHS of the forum, you'll see the heading "Classifieds".

Hold your mouse over the heading and you get 5 menu options, "Classifieds" at the top. Move your cursor onto the "Classifieds" sub-menu and click on it, and when the Classifieds page opens, you'll find, "Submit an Advert" at the top RHS of the Classifieds page.

I cannot believe that so many comments on that crash, ignore the basic problem there. The bloke apparently did a lot of his own maintenance, and it certainly appears that he shouldn't have.

He got an oil sample report back that showed major problems with that engine - including the comment, "(there is) even enough chrome (in the oil sample) to show a ring problem.”

That engine was so sick, it would've struggled to get off the ground with no load and low fuel. Yet he was taking off in a 109°F (nearly 43°C) ambient temperature, with full fuel.

He was doing this with an engine that had broken compression rings on two cylinders, and valves that looked like they should've been scrapped 500 hrs ago.

The engine had a TT of 1216 hrs since a Lycoming rebuild, and it had No. 1 cylinder replaced just 75 hrs previous to the crash.

The maintenance was deficient, if one cylinder needed replacement 75 hrs ago, all 4 should have been checked more thoroughly, and perhaps a better understanding of the poor condition of the engine might have been arrived at.

While I agree with what Thruster is saying, as regards airspeed (and avoiding the dreaded turnback), the simple fact remains, the engine was so sick, it incapable of maintaining adequate airspeed, in either a climb or a turn.

I am amazed that pilots will spend so much time on flight planning and other factors, yet ignore the fact that the main item that enables them to keep airborne - the engine - is in a poor state to sustain the stages of their flight that demand full power.

....why anyone would even invent a meat pie with broccoli - and even more so - how many people would actually want to eat one? "It's a Victorian thing", said Cappy sagely. "You should see what they do with their meat and oysters, particularly when there's mandatory .....

.....World League for Freedom and Democracy, who saw all these mandates as simply Communism and Fascism in a clever disguise. "These practices are cruel and outdated, and nothing more than a Communist plot to ensure that the population is easily separated into the two groups, with easily distinguished markings! This an outrageous demand, not based on personal needs and choices, and we will fight to the death to.........

Information from a regular news link below .....

https://www.9news.com.au/national/helicopter-crash-at-stockton-beach-newcastle/4af4d149-dc18-4ee1-8a47-55eb5d506a7b

.......circumised individuals who pose a threat to the rest of the community thanks to their increased ability for disease transmission, to roll up for their.........

F10, the above post was well over 2 years ago, I think the bloke might have the information by now!

You know you're old, when the news reader reads out an item about "an elderly man" - and you realise the person they're referring to, is 10 yrs younger than you are! 

Steve Wittmans fatal crash was caused by improper installation of the wing fabric. The fabric covering had not been installed according to the polyfibre covering and paint manual. The underlying plywood was not treated with the correct poly-brush compound.

The fabric on top of the wing separated from the underlying plywood, resulting in induced aileron-wing flutter. This flutter started with delamination of the fabric at the trailing edge of an unbonded section of the fabric at an aileron wing station.

https://aviation-safety.net/wikibase/35828

......going to get extra wind up his a***, when he next gets airborne, which will make for more interesting flying. Meantimes, CT was pulling an old sidevalve Morry engine apart to see if he could improve on the design, to get much more power out of it, and to stop all the combustive effort from blowing the head off.

"If D-motor can do, surely I can!", he muttered to himself. "I've worked on enough Victa lawnmowers, Honda pumps, Briggs & Strattons, and sidevalve motorbikes to be able to nut something out!"

Suddenly, a light bulb moment went off in his head. "Of course!! That's it!! I can use a ...............

.....rode a 900 Kwaka and did 0-400M in under 6 seconds! But then came the day I lost it, popping a mono, and I came off at 120kmh, and slid for 200M down the road!"

"But luckily, I had my big leather coat and those black boots on, and they took the brunt of the damage that would've otherwise happened to my skin, if I hadn't been wearing them!"

"I really miss those boots! - and the Kwaka, too! It was only fit for wrecking after that episode! I've never ridden a Kwaka or worn boots again since! I reckon I wore out all my luck that day! - as well as my boots and coat!"

"That's nothing!", said Turbo. "You want to hear a black boots story? I was test flying this new Northrop A-17 during the opening stages of WW2, when a wing spar broke, and I had no choice, but to bale out!"

"I was wearing the best pair of fur-lined flying boots a man could buy, back then! But when I flung the canopy open, and went to climb out, one of those boots caught on ........

(And here, Dear NES readers, we have a photo of Turbo, centre, in his flying gear, at the height of his career, with his actor-like looks and build, and showing the superb flying gear he always wore on test flights. Notice that the slick aircraft salesman to his left, is none other than our redoubtable Rat, Cappy....)

.....things like skin grafts!" "Tell me about how much skin Turbo got in this game", said Nobu. "He must have plenty of skin in game, to need skin grafts!"

(Dear NES readers, note how the culturally-sensitised OT does not make fun of other nationals way of speaking, just as we need to not make fun of Tasmanians spelling ....)

"Look", said CT. "Turbo only needed skin grafts, because he was........