Regarding the 17 on/13 off, I understand you position on day 1 and day 17. Seems there are a lot of flights out of Luton and Farnborough. What if you live near London? Do they try to get you to start flying duty from one of these bases on day 1, or do you still get day 1 reserved for "positioning"? If so, is it the same for day 17?
Thanks