My turn to beg for some advice from those who know more than me about this subject.
Pre-flight holding fuel policy for the 727 is based on a fuel flow of 4000kg/hour. AFT notes say to apply this fuel flow regardless of configuration. This appears to be in line with pages 1-15 and 1-17 of the CASA 727 Handbook.
However, I just did a Rob Avery practice exam where on a landing gear down flight he calculated holding fuel based on a fuel flow of 6000kg/hr. This is in line with page 5-4 of the 727 Handbook which says holding fuel flow when gear is down is increased by approximately 50% but I thought this 50% increase was only for in-flight planning of gear-down holding using the holding table at page 4-4.
Does anyone know which way is correct?
Thanks