MGB
The AW 139 MGB was subjected to a dry run test for at least 30 mins - and passed.
The oil pumps are installed in opposite sides of the MGB but are both driven by the same (main crown gear) wheel - if that stops rotating then oil is the least of your worries.
Yes there is a single filter/cooler but if you are concerned about leaks I guess the logic is that any leak anywhere will empty the MGB of oil so no fuss about redundancy there.
The MGB has been designed as a development of the A129/EH101 style gearbox with all oilways internally cast. Clever chaps these Italians.
Loss of one pump will result in a drop in pressure but no RFM references made to this - don't know why but suffice it to say that one pump will do the job OK.
G
Last edited by Geoffersincornwall; 19th Mar 2009 at 17:49.