Had it on a 744 RB211-524G across the pacific, oil quantity slowly dropped to zero monitored T & P kept engine running. After landing and shut down the oil level increased & upon inspection oil had dumped everywhere over the cowl.
It was filled up again & flew one sector (15hours) approved to home base, episide repeated on return and gearbox changed.
Oh and we didnt die from 0 oil quantity indication nor did the engine explode.
RR* oil is held in the gearbox not in an oil tank like P&W and GE, its just a design difference. Different design different rules.
* There are probably RR engines with oil tanks and should the tank quantity drop to zero then a shutdown is required.
More recently a gearbox had a crack RR confirmed fill it up, it'll lose it during takeoff and climb but as long as the oil in the system keeps the Ts & Ps satisfactory then its ok to keep the engine running.
Last edited by CCA; 22nd Feb 2016 at 04:11.