Thanks Sunfish.
That would explain why, when I use a credit card rather than a ‘carnet’ card, the bowser requests a ‘pre-authorised’ amount and a PIN, and there’s a bit of a delay while the machine has a discussion over the electric interweb with my bank. The process seems to be one through which the bowser checks whether your credit card limit covers the cost of what you say you’re going to buy.
(I recently battled with a bowser that had a very aged and dim LED display, and was surprised to see a ‘pop up’ on my phone from my online banking app, saying I’d spent $3,000 on AVGAS, my having hit the zero one too many times on the bowser keypad. Fortunately the actual final debit reflected the very modest amount of AVGAS that I actually put in my very modest aircraft.)
Suppliers other than Air BP seem to have dealt with this issue.
Last edited by Clinton McKenzie; 14th Jul 2020 at 10:38.