Here's a tricky one for the 747-400 whisperers:
Checklist item 4 in the DITCHING checklist in the B747-400 QRH states "DO
NOT ARM THE AUTOBRAKE."
Does anyone have any idea for which technical reason this is stated in the checklist? On the face of it one would think that the autobrake setting is irrelevant in a ditching with the gear up, but if Boeing puts it in the checklist there must be a good reason for it.
