All answers above were related to question 2 - I have not got my A300-600/A310 notes to hand!!
To remove all hydraulic power on an A300-600, a pilot would have to offload 4 EDP (engine driven pumps - 1 green system pump on each engine; and one each yellow and blue system pump). This highly unusual configuration would be brought to the pilot's attention visually via ECAM and aurally (probably a CRC).
I cannot with any certainty remember the config of the A300 hydraulic system. The yellow system, I think, also has an electric pump. This is used for cargo doors, among other systems.
Lu - please appeal for more information from other more knowledgeable PPRUNERs!!!
Last edited by Bus429; 23rd Mar 2004 at 06:53.