My experience with lifetime buys was at HP/Agilent.  They would only do such a buy when the manufacturer announced a part discontinuance.  You then figure out how many parts you need for the expected product lifetime plus spares for future repairs and buy that many to put in stores.

It's  a pain in the neck because it can be expensive to store all that unused inventory and it's hard to estimate product lifetime years in advance.  So if possible you try to find a substitute part, even if that may involve some re-design.  But sometimes a lifetime buy is the only reasonable solution.

Alan N1AL


On 3/11/20 12:10 PM, Fred Jensen wrote:
It is dependent on scale, David.  The USAF flies large fleets of a number of different A/C and has in-place materiel warehousing and distribution facilities.

On 3/10/2020 9:49 PM, David Gilbert wrote:

That makes zero sense.

What are you going to make a "Lifetime Buy" on?  A synth?  A front panel?  A tuner?  You might as well buy a second (or third) rig since you don't have a clue what might fail in the future, and if you buy all those things separately (or worse yet the individual components that go into them) you better plan on working an extra year or so before retiring.

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