Trans-Pacific Aerospace Company Inc. (fka TPAC)

[spudsuds]

BOEING nor Airbus will risk lawsuits for such a minute issue. They take safety first over cost. Also the liability would be a huge risk. They want only the best and most reliable product available.

As for the cost cutting aspect your example would make the 25,000 cycle bearing cost more than the 100,000 cycle since they last 4 times longer.

Those non-A Type bearings are absolutely not useless. In today's cost cutting market, if you're a manufacturer like Boeing or Airbus building new airplanes and you can spend $50,000 for bearings that meet the spec but only last 25,000 cycles, or $100,000 for the same spec bearings that last four times longer, and the dollar is the bottom line, which would you choose?

You'd go with the cheaper ones for a less expensive airplane and count on the purchaser to upgrade to the longer life bearings when the life cycle is reached. That's the real world.