Jump to content

facthunter

First Class Member
  • Posts

    31,656
  • Joined

  • Last visited

  • Days Won

    1,112

Everything posted by facthunter

  1. No exhaust valves have a coating that I know of except chrome on the valve stem sometimes. The valve is generally made of something fairly exotic to perform as a Eutectic metal. Early ones were silicon and chrome. (silchrome). to (run at temps above red) By comparison Inlet Valves don't have to be made of anything very special and some are aluminised on the surface. Some aero aircleaners are not so good and some dusts are corrosive when moist. Some of what's mistaken for just carbon has a fair bit of dust with it. That bakes onto EX valves with a light brick colour and some anti scuffing additives in the oil might contribute to that also. Nev
  2. Some things have to be double checked. Only people who work for CASA or it's predecessors can land wheels up. Nev
  3. Inexperienced pilots shouldn't be looking through the roof in a turn and anyone else should be very wary dong it too. Getting it wrong in turns in the circuit is common and often with disastrous results.. Nev
  4. Why would enough people want to go from Fort Worth to Brisbane? Nev
  5. Water or water Meth certainly cleans the combustion chambers. Exhaust valves are usually pretty good stuff these days and sometimes the inlets are aluminised. Your biggest worry is a crack starting at the edge of the Head (RARE these days) or the stem stretching and getting Cracks when it's too hot. Retarded, lean, over boosted or muffler part blocked due baffle detaching etc. ALL our mogas fuels have too much sulphur and with a bit of moisture after burning will form sulphuric acid which is very corrosive. Nev
  6. Only when some thing stupid is done. These aircraft have to prove they have effective icing prevention and control to be certified. Frozen Aircraft have to be deiced before attempting flight. Nev
  7. The engine and aircraft combo are considered but I can't see how it could extend the Engine Makers figures. Nev
  8. 2 events is not enough to base stats on but the management of the Plane situationally is still the first priority... IF the student is prepared (trained) a check is a formality. I have noticed a few ex airline people get caught with Airframe icing in light aircraft. None of those aircraft cope with it whereas all jet aircraft do. and you get spoiled.. .Nev
  9. And most of the GA. Nev
  10. Thank You. Nev
  11. Where is that dealt with? Nev
  12. I've not known many piston engines to just "EXPLODE". . I've known one Cessa 441 to damage one cowl enough to cause excess drag. Nev
  13. That engine was a rare higher powered dealer serviced RR version and had an oil line elbow machined so incorrectly you would have handed it back at Bunnings as soon as you looked at it. . It's been proven that extending motors "ON CONDITION" causes the eventual overhaul to be more costly as engine wear accelerates when Things are not as good as when near new. TBO used to be established by the proven record in the field. These days it seems you can claim just about anything and get away with it. Motors are treated very differently in service and in different applications... Infrequently used motors are very suspect as is anything that is overheated or over speeded or run too cool. or fiddled with unnecessarily or the prop contact anything or the motor not tuned well, with rough periods occurring. Aero motors run best when used nearly every day and not for just an isolated circuit or short ground run. Nev
  14. That's not the frequency situation at the place where this happened. Nev
  15. Zero timing an engine is illusory as a concept. You can check for cracks but all parts suffer fatigue which cannot be tested for in a non destructive way. Some items have a shelf life also. A small rust pit on a valve spring will cause it to fail.. How do you know a valve stem has not stretched and started to crack unless you strip it and inspect? Aero engines meet original power output until the day they are removed from service or All your performance data is skewed. What exactly is ON CONDITION? Compressions checked, runs OK? Is THAT enough? It's an AEROPLANE and at times your life depends on that engine. Not like a car, motorbike or ride on Lawnmower. Nev.
  16. Obviously you both have to be on the same frequency. That's THE issue. Not sure I'd encourage looking out through the roof IN A TURN for most pilots. VERTICAL separation is best. .Nev
  17. I can't recall many incidents with them. The 717 must have had engines with more thrust and carry more fuel.. Nev
  18. Wheels being down might explain it's predicament. Nev
  19. 72 year old (Name included) It didn't say whether he was the passenger. Nev
  20. Very much built for a purpose. Nev
  21. IF you read THAT in the paper you'd complain. Was it You? Nev
  22. They've kept them a while so they must have done the job. We (TAA) used them DC-9-20's 98 pax, on longer routes than they were intended for. Perth Hedland Darwin, Cairns-Gove- Darwin Alice Springs Sydney, Townsville Sydney are some examples. Difficult when there's an alternate required. I recall flying through Cyclone KEN going Ph Hedland Darwin at night.. Nev
  23. It was the stretched version of the Douglas DC9 that both TAA and Ansett flew. Boeing took over the Company. Been a good Aeroplane, popular with Pilots who could keep ahead of it and enjoyed it's manoeuvrability. Endurance is only 3.5 hours to EMPTY in the earlier ones so you had to keep your wits about you.. A few of the "older piston drivers" didn't make the conversion. 18 Minute leg from Canberra to Sydney and down a breakfast each. (2 CREW). .Nev
  24. Aren't they the Planes that were used in the show where the radio bloke sung "Good Morning VIETNAM"? .Nev
  25. Fellow aviators and distraught friends and relatives. I think of them. When you fly you don't expect this to happen. Fly carefully folks.. Nev
×
×
  • Create New...