One of the reasons for having two engines is so you can have two almost totally independent systems -- separate fuel feeds, separate ignition systems -- just as kind of a backup, ... So the chances of two of them failing simultaneously makes us very curious about the cause.  -   George Black     Quotes
One of the reasons for having two engines is so you can have two almost totally independent systems -- separate fuel feeds, separate ignition systems -- just as kind of a backup, ... So the chances of two of them failing simultaneously makes us very curious about the cause. George Black