JP5A LL navex was particularly fuel-hungry if you left the airbrakes out all the way round the LL phase. Demonstrated by a solo stude at Cranwell who, after what must have been a staggeringly arse-puckering recovery, taxied in and shut down thinking he had gone away with it - in every sense. Sadly it seems the linies were required to report how much fuel they put into the jet afterwards - which worked out at shutdown fuel remaining of 29lb. To the credit of the system, the stude graduated.