I am interested in obtaining information about what is involved in
placing a hydraulic pump on the right engine in a Piper Aztec F
airplane that just has a single hydraulic pump on the left engine.
[...]

Given the hand pump and CO2 backups for the Aztec's hydraulics, how
much benefit do you expect from a backup hydraulic pump? How
frequently do failures occur in light twins' hydraulic systems that
could have been prevented by a backup pump?

- FChE