How about 20 hours exactly in a Nimrod on the 6/7th May 1982 with a Kinloss crew just going round the UK. This was the final test sortie in the Nimrod AAR conversion. My log book tells me I did 2 contacts, one of 72,000lbs and a second one of 28,000. It took months to get the smell out of my grow bag! Happy days.