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#1
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Jay Honeck writes:
If you mean installing a tractor light bulb instead of an "aircraft" light bulb, sure, I know LOTS of owners like that. But I don't know any owner who would cut a safety corner. Why wouldn't a light bulb be important for safety? -- Transpose mxsmanic and gmail to reach me by e-mail. |
#2
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On Sun, 22 Oct 2006 09:35:12 +0200, Mxsmanic wrote:
Jay Honeck writes: If you mean installing a tractor light bulb instead of an "aircraft" light bulb, sure, I know LOTS of owners like that. But I don't know any owner who would cut a safety corner. Why wouldn't a light bulb be important for safety? Some are, some aren't. A landing light, for instance, is not required for night flight. I've flown my plane at night, and it doesn't have one. Heck, it doesn't have instrument lights, either... I used a chemlight. If it *did* have a landing light, I'd feel no compunction about using a tractor bulb instead. If one ain't required, there's no reason to get all formal about it. It would at least feel at home with all the other "Aircraft and Tractor Supply Company" and "Home Depot Aerospace" parts on board.... :-) Ron Wanttaja |
#3
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Ron Wanttaja wrote:
Some are, some aren't. A landing light, for instance, is not required for night flight. unless of course you are operating it for hire as required by 14 CFR 91.205(c)(4) --Sylvain |
#4
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![]() On Sun, 22 Oct 2006 09:35:12 +0200, Mxsmanic wrote: Jay Honeck writes: If you mean installing a tractor light bulb instead of an "aircraft" light bulb, sure, I know LOTS of owners like that. But I don't know any owner who would cut a safety corner. Why wouldn't a light bulb be important for safety? Please read up on hazardous attitudes. Just because YOU don't think it's important doesn't mean you can break a regulation and install the incorrect bulb. Hardly something I'd expct you to understand. |
#5
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If you mean installing a tractor light bulb instead of an
"aircraft" light bulb, sure, I know LOTS of owners like that. But I don't know any owner who would cut a safety corner. That's not a safety corner? Sure, they are probably built on the same assembly line (but maybe not) and they meet the same specs (but maybe not), but (FAA bashing aside) how do you know that this particular part is (or is not) as good as an approved part? Jose -- "Never trust anything that can think for itself, if you can't see where it keeps its brain." (chapter 10 of book 3 - Harry Potter). for Email, make the obvious change in the address. |
#6
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Sure, they are probably built on the same assembly line (but maybe not)
and they meet the same specs (but maybe not), but (FAA bashing aside) how do you know that this particular part is (or is not) as good as an approved part? Define "good". If you mean "value for the dollar" good, well, obviously the FAA-approved GE 4509 is the biggest rip-off on the market. It costs twice as much as the equivalent tractor bulb. If you mean "long life" good, Aviation Consumer magazine just did a comparison, and the 4509 is not even close to being the longest-lasting bulb. In fact, it didn't even make it to its measly 25-hour predicted life. If you mean "brighter" good, well, the two bulbs put out the same lumens. So...how else can we compare the bulbs? What do you mean by "as good"? -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" |
#7
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"Jay Honeck" wrote in message
oups.com... [...] So...how else can we compare the bulbs? What do you mean by "as good"? One thing *I* would be concerned about with respect to ANY electrical part is whether it will start burning. Now, I admit that I don't know what the certification standards are for an aviation-approved light bulb, but I would hope that at some point along the way it involves various safety standards to ensure that not only will the part work as intended, conforming to the original design of the aircraft, but will also not compromise the safety of the aircraft. If I'm out plowing my field or hauling bales of hay and the lightbulb in my tractor explodes, no big deal. Hopefully it hasn't been a dry season, or I'm not near my parched wheat fields. But in any case, I have a pretty good chance of simply walking away without any trouble at all. It's a bit different when you're airborne and something like that happens. Now, it is true that in some cases an aviation-approved part is manufactured right alongside non-approved parts. But the certification process is applied differently, and you are paying for that. The cost of a part is more than the R&D that went into making it and the cost to manufacture the part, it's even more than those things and a fair retail markup. It also includes all of the FAA-mandated procedures that provide a proveably safe part (and yes, much of that is just paperwork, but that's how it goes when complying with safety regulations). Your tractor-"approved" part has none of the aircraft-related certification applied to it, and so you have no way of knowing whether it does or does not comply with the same safety standards that apply to aircraft-approved parts. I find it amusing that you preach "owners are safer", and even crow about your own dedication to safety, even as it obviously doesn't even occur to you that somewhere along the line in approving a part for aviation use, the FAA actually considers the safety of that part. If an owner has taken it upon themselves to not only have read and understood exactly the certification standards that are applied to aviation-approved parts, but has also done the necessary work to ensure that an otherwise-unapproved part meets those standards, then I would say that owner is still acting illegally if they install that part, but at least they can still lay claim to being safety-minded. However, I doubt you've done all of that, and neither would most of the rest of us. It is far more convenient to let the FAA and the parts suppliers worry about all that, and just pay the higher price for a part. And yes, I agree that the FAA standards are probably not the end-all, be-all when it comes to aircraft safety. But it does define a minimum bar that aircraft are expected to meet, and it seems foolish to me to knowingly ignore even that minimum bar. Pete |
#8
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So...how else can we compare the bulbs? What do you mean by "as good"?
It doesn't really matter, unless you are writing the rules. In your position, you only get to follow them (or not). Let's turn it around a bit. You are thinking of buying an airplane, and you find that the owner has declined to record his maintanance as required by the FAA. This of course has no impact on safety, since it's just paperwork, and the airplane flies just as well without that dumb bureaucrap. Of course the landing light is the tractor bulb, and the stall switches (seven hundred dollars from piper) were replaced with two dollar radio shack switches when they failed. In fact, there are two in parallel, for redundancy. One of the landing gear shocks turns out to be a truck shock which the owner assures you is just as good. The engine is just out of overhaul but the mechanic is at an airport a hundred miles away. No problem - he fires up the plane and you both fly there so you can speak to the mechanic. You fly this leg yourself, as a test flight. He'll fly home (because he's paranoid about the dumb FAA rules about sharing costs, so this makes it ok). While you're at the shotp, he runs into a buddy who has a beer brewing hobby. So this pilot samples a bit of his brew. Just a sip (maybe an ounce of beer). It's not really a problem because you'll be talking to the mechanic for a while, and by the time he gets back at the controls, it will be four full hours, maybe more. The "eight hour bottle to throttle" rule is stupid since it doesn't distinguish between a sip and a couple of glasses. He's got a system where he's figured out a function of how many ounces of beer he can have how many hours before flying - two hours for a sip, four hours for half a glass - eight hours for one drink, twelve hours for two drinks. It's lots more sensible than that hard and fast FAA crap, since the FAA would let you fly eight hours after four drinks if you weren't impaired. The FAA rules are for idiots who can't figure this out. So, you talk to his mechanic and he assures you that the engine is in great shape, and shows you the oil analysis report. It =is= in great shape according to that. Five hours later he gets in the left seat, you get in the right seat, and express some concern about his alcohol thing. "No problem, you can be PIC", but I still have to fly the leg home. It's getting cloudy and the return will be IFR. He's rated. He's current and sharp. That is, he flies an hour on MSFS every day practicing approaches. He has not done the FAA six in six in a real airplane but he's sharper than most pilots who are "current". On the way home the weather turns to crap, he's on top of it despite his little sip of beer, and brings the thing down to minimums on a GPS approach. No airport. The GPS shows he's right above the runway, so he ducks down two hundred feet, finds the strip exactly where he said it would be, flies a tight pattern and greases it in. The DH is pretty high because of a large radio tower, but since he knows where it is, he's comfortable going down another 250 feet if he has to. Eagle flight needs pilots. Would you reccomend him? You want to buy an airplane. Would you buy his? Jose -- "Never trust anything that can think for itself, if you can't see where it keeps its brain." (chapter 10 of book 3 - Harry Potter). for Email, make the obvious change in the address. |
#9
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![]() Jay Honeck wrote: Sure, they are probably built on the same assembly line (but maybe not) and they meet the same specs (but maybe not), but (FAA bashing aside) how do you know that this particular part is (or is not) as good as an approved part? Define "good". Manufacturered in an approved way. That means it's manufactured in a manner acceptable to the Adminstrator. That doesn't include your tractor lightbulb. The fact is, a bulb you buy at Wal-Mart is NOT legal for installation in an aircraft. It is an unapproved part. Argue and bash the FAA all you want,but it doesn't change the fact that what you are suggesting is illegal. |
#10
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So...how else can we compare the bulbs? What do you mean by "as good"?
I have a great powerpoint presentation that you might be interested in. It describes the approved way to manufacture an aircraft part. Let me know. |
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