What has two engines and one owner’s manual? An Aero Commander 1000.
This isn’t a problem if you are the owner-operator. But if you operate an Aero Commander 1000 without owning it, get your hands on a reproduction manual from Pilot Mall.
Our manuals, also called Aircraft Owner/Information Manuals and Pilot Operator’s Handbook, are for training and reference purposes only. They do not qualify as an FAA-certified replacement.