[Taxman]

Anything I say would be pure speculation — I have no systems knowledge of the F-22, but the fact that “software” is involved in what used to be a relatively simple O2 system tells me that some smart engineer tried to develop an “improved” O2 system and that it was fielded before being fully tested.

HST, I am back to my original statement — cockpit pressurization/OS systems have been around for a long time, and, most of them work pretty well. The more complex a system is, the more likely that there will be multiple failures, and the more likely it will be very expensive to maintain.

The KISS principle ought to be more widely followed, IMHO.

[af_vet_rr]

HST, I am back to my original statement — cockpit pressurization/OS systems have been around for a long time, and, most of them work pretty well. The more complex a system is, the more likely that there will be multiple failures, and the more likely it will be very expensive to maintain.

The KISS principle ought to be more widely followed, IMHO.

Several years ago, I followed some of the JSF competition pretty closely as I had a friend on one of the teams, and I remember seeing an interview where one of the executives bragged about how complex their entry was. Of course he would be happy - if they win, they'll be rolling in the money for years to come, not just in building, but in future maintenance costs. But I could imagine maintenance folks putting their faces in their hands.

Hell, Lockheed Martin is getting millions to help track down the oxygen problem with the F-22.