[time-nuts] Aircraft ping timing

[Scott McGrath]

Actually traceability of parts for maintenance has nothing to do with unions and national security.   It has everything to do with failure analysis.

If a part fails it's entire path from manufacturer to maintanance and repair shops can be traced so if a part starts experiencing failures at Sn 12345 maintenance shops worldwide can be alerted

It's why a plane with no maintenance log is essentially worthless as every track able part needs to be dismounted and inspected and a new 'yellow tag' issued or compenent scrapped if no serial found

Sent from my iPhone

> On Mar 22, 2014, at 9:37 AM, Magnus Danielson <magnus at rubidium.dyndns.org> wrote:
> 
>> On 22/03/14 09:01, Poul-Henning Kamp wrote:
>> In message <532D1009.6040606 at leikhim.com>, Joe Leikhim writes:
>> 
>>> In retrospect it is kind of crazy that fleet owners will put
>>> tracking devices on $100K semi trucks and cranes yet $100 million
>>> aircraft have to rely upon 60 year old technology (Transponders)
>>> and ACARS to keep track of them.
>> 
>> Pilots Unions and "national security" has a lot to do with that.
> 
> It's a mess.
> 
>>> Can you imagine how much an aircraft like that is worth in spare parts alone?
>> 
>> It is worth more as scrap metal.
>> 
>> There is no market for untraced spare parts for large passenger jets.
> 
> I was about to make the same comment. The paperwork on such commercial airplanes is quite different from cars. Besides, the serial numbers would be completely traceable, removing them it turns the part into a worthless crap, so only some of them might be useful for a prop but that's about it.
> 
> Cheers,
> Magnus
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