This whole scenario can be avoided. Instead, a constant contact system over low bandwidth satellite should permanently archive plane vital stats to multiple geographically-diverse datacenters to remove the absolutely unnecessary and antiquated dependency on losing a physical "single source of truth." The blackbox is as obsolete as a library card file system, but should be kept as a secondary system.
As i understood, the main issue here is cost .. providing satellite links to each and every plane flying out there and to datacenters will be expensive.
