| Electronics > Repair |
| Help Identifying Vintage Component |
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| Drjaymz:
When you have a production of aircraft and you find that something specific failed leading to an accident - lets say cracks on nose wheel assembly (because that happens to every aircraft type) then the certification process allows them to find all aircraft, serial numbers that would be exactly the same - so in theory that traceability is a good thing. The problem with very old aircraft (and remember GA aircraft average close to 50 years old) then it becomes impossible to keep compliant because parts are not procurable and salvage spares aren't available either because they would all have similar wear. I don't think I've seen a 100% compliant Cessna 172 for at least 20 years. Indeed the FAA and CAA now have relaxed quite a few things for standard modifications, but its still painfully slow. Using the AeroLED landing light as an example - basically a par36 LED spot, only draws 4A instead of 10 and doesn't blow. Works 9V - 28V constant power, much less heat. Now for a 172 it was worth their bother getting that approved as a standard modification, but if you have an aircraft type where there are only a handful built - then no chance it will be on that list despite the engine, electrical system being the same and its a drop in replacement. As result the official paperwork and the practical reality diverge significantly as people get them bodged behind a shed somewhere - I am sure the situation got worse permanently following Covid because parts availability became either years or not at all. |
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