Originally Posted by
skywatch
I doubt they do it using FDM - more likely they are just looking at your fuel burns/flight times (since those are pass through costs) and looking for an explanation if one is better than the other. If they had the FDM, they wouldn't need to send the email.
You are exactly right. I thought that was assumed by the reader. Sorry. The thing about the emails is that it was never threatening. It was always phrased in a way as a gain towards more efficiency. Usually at the cost of pilot pay unfortunately. DHL was never that upset about on time departures, (K4 waits for freight), but they were big on getting as close to on time arrivals as possible. They would drop a little payload for extra fuel and cruise at .87/.88 to try and make the sort. The UPS/FedEx model seems to be less efficient and they also seem to have bigger sort windows in my experience during CNET.