When you reach a relevant stage of trianing Kerosine, CTC send out an airline handbook which details all the relevant figures. I also know a few guys out the other side of the course who can confirm the numbers. I don't have it detailed anywhere that cadets are paid more than £1000 per month for bond repayments. I would need to delve through my finances a bit but I am expecting to be making bond repayments of around £1100 per month, so I will have to find a small percentage out of my salary to cover the outstanding amount. I do stand to be corrected though.
TomH1408, the larger numbers you are reading about take into account interest. HSBC charge about 2.5% above variable BoE base interest rate for the privilege of the unsecured loan which over 7 years mounts up considerably.