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SVTPerformance's Chain of Restaurants
Road Side Pub
An knowledgeable commercial plane experts on here?
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<blockquote data-quote="James Snover" data-source="post: 14053425" data-attributes="member: 67454"><p>A pilot (and crew) have to have the ability to disable any circuit at any time if that circuit is causing a fire, or appears capable of causing harm to the aircraft. Likewise, all those circuits are susceptible to fire: burn through the wires, no more transponder signal. So there's two ways it could have happened. Especially if the transponder is what caused the fire. A transponder puts out some wattage, it doesn't run off a pair of AA's.</p><p></p><p>I work on electronics/electrical equipment, I fix medical x-ray machines. It doesn't matter how thoroughly you design your circuit, how redundant you make it, how much "graceful degradation*" you design into it. Sometimes they just blow sparks.</p><p></p><p>*Graceful degradation: you design a circuit in such a way that when it fails, the whole thing doesn't die at once. You begin to lose capacity, if it could transmit at 100 watts, now you can only put out 85 watts, it doesn't just blow a breaker and shut the whole thing down. And sometimes that goes wrong, too, and the whole thing pops a breaker and shuts down or catches on fire.</p></blockquote><p></p>
[QUOTE="James Snover, post: 14053425, member: 67454"] A pilot (and crew) have to have the ability to disable any circuit at any time if that circuit is causing a fire, or appears capable of causing harm to the aircraft. Likewise, all those circuits are susceptible to fire: burn through the wires, no more transponder signal. So there's two ways it could have happened. Especially if the transponder is what caused the fire. A transponder puts out some wattage, it doesn't run off a pair of AA's. I work on electronics/electrical equipment, I fix medical x-ray machines. It doesn't matter how thoroughly you design your circuit, how redundant you make it, how much "graceful degradation*" you design into it. Sometimes they just blow sparks. *Graceful degradation: you design a circuit in such a way that when it fails, the whole thing doesn't die at once. You begin to lose capacity, if it could transmit at 100 watts, now you can only put out 85 watts, it doesn't just blow a breaker and shut the whole thing down. And sometimes that goes wrong, too, and the whole thing pops a breaker and shuts down or catches on fire. [/QUOTE]
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SVTPerformance's Chain of Restaurants
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