A huge, well organized group of survivors (including pilots, technicians, etc).
A few dozens of passenger jets left that because of shortage of fuel soon would not serve as transport device.
There is clearly a hope that in 10-20 years they should have quite plenty of fuel and semi working, crude industrial base and having a few working aircraft would be really handy.
No desperate need to scrap the aircraft, nevertheless if there is no use of something, then a new function would be found....
The idea is to store them somewhere and later partially cannibalize them for parts and partially just jury rig the remaining. So the questions are:
Would a dessert salt flat be an acceptable place to keep them for storage? Or even dry salt would be corrosive and better just store on normal desert, even though it would be harder to land there.
Which parts should be crucial to preserve as future spare parts, which can be just scavenged? (Guess: engines would be crucial to preserve, a few fuselages can end up as housing, because they wouldn't be limiting parts)
Which parts would have problems to survive such period and have to be produced later using more crude methods? Batteries? Tires?
(or maybe the whole idea would not work and the best idea is to repurpose or recycle the aircraft?)