Quote:
Originally Posted by atb112
I always wondered about old aircraft. Do they completely rehaul the electronic system every few years? Especially if you consider the technological advances over 10 years.
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There is upgrade mods for avionics and navigation equipment that are done on older aircraft to keep up with technology. Some are at the owner/operators option and others are made mandatory by the FAA/Transport Canada. As for complete redo's of an aircraft electrical system, that's a big no! For large transport category aircraft, this would be a near impossible task (miles and miles of wires) and something that just doesn't need to be done. Wires do periodically need to be repaired due to age, but usually because they chafed through the insulation and grounded to the airframe (which should open the circuit breaker or blow the fuse to prevent any further damage!).