Recon Flight Payouts
From Fallen London Wiki
From some crowdsourced math, the rewards for recon seem to be as follow
Sightings are awarded when reaching distance 30, 55, 80, 105
Upon ending a flight, distance is converted into Surveys of the Neath's Roof using [Base Watchful]*0.1 as a multiplier
Service is then awarded at a rate of 10 per point of Surveys, and 1250 per Sighting.