flightgear 1:2017.2.1+dfsg-4 is marked for autoremoval from testing on 2017-11-20 It is affected by these RC bugs: 878631: flightgear: flightgear build depends on libsimgear-dev (<= 1:2017.2.999) but 1:2017.3.1+dfsg-1 is to be installed