Burial vault produces 19 possessed passengers every 1 hour
Standard flight to Dahshur is 2 hours long and carries 19 passengers
By the time the plane returns your burial vault would have produced 38 passengers therefore you have a number of options to consider;
The mathematics of this event is to "frustrate" the player, however, if one were to commit 2 standard owls / airlabs per 1 burial vault possessed passenger count would stand unmoved and burial vaults would be collected ad infinitum...
Just my thoughts
Standard flight to Dahshur is 2 hours long and carries 19 passengers
By the time the plane returns your burial vault would have produced 38 passengers therefore you have a number of options to consider;
- Speed up
- Increase planes numbers
The mathematics of this event is to "frustrate" the player, however, if one were to commit 2 standard owls / airlabs per 1 burial vault possessed passenger count would stand unmoved and burial vaults would be collected ad infinitum...
Just my thoughts