MTOW. .. .<<ie, if you’re running short of fuel coming into LHR, you divert to your nominated alternate at or before you reach your min divert fuel – end of story>>. .Not so for us... Provided you meet the Ops Manual (approved by the CAA) criteria for the Captain to decide "Landing is 'assured'", then as you fly around the hold using fuel, you do not have to divert, but can "commit" to destination. By using the "Diversion Fuel" you can continue to hold for a longer period.. .. .When the Fuel gets to a state where you may now land with less than "Reserve" (30 mins holding), you make a PAN call. When you will land with less than Reserve, it becomes a Mayday.. .. .<<adding favourable weather conditions that allow the nomination of Heathrow’s second runway as an alternate>>. .2 corrections (for us).... .1. <<adding favourable weather conditions >>. .The example in the Ops Manual quotes CAT 2 conditions as being sufficient to "commit" to your destination airfield.... .2. <<nomination of Heathrow’s second runway >>. .Once "maximum delay known" or an EAT received, you can "commit" regardless of the number of runways i.e. to a single runway destination.. .. .That is what the Ops Manual permits. My experience is that not many Captains would "commit" to land (i.e. give away the option to divert) at a single runway destination in CAT2 conditions.... .. .NoD. . . . <small>[ 03 March 2002, 15:40: Message edited by: NigelOnDraft ]</small>