Originally Posted by
Georgeablelovehowindia
it was wobble pumped out of blue barrels on turn round at outstations by one or other of the flightdeck crew.
Likely a procedure following the Paninternational accident, referred to above, where an outstation ground crew had got fuel in the demin-labelled barrels. There was presumably a test of the contents as well, first.
Surprising a One-Eleven could not get from Mahon to Luton without a takeoff aid. Freddie Laker used to run them from Gatwick to Tenerife and back, and I think his -300 variant did not have the water aid.