/usr/lib/x86_64-linux-gnu/libairspy.so is in libairspy-dev 1.0.9-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libairspy.so.0
/usr/lib/x86_64-linux-gnu/libairspy.so.0