In addition to the basic documentation described above, the manufacturer
also makes available, or else customises, a wealth of other manuals concerning
the operation of its products. These would include the Flight Manual, Flight crew
Operating Manual (FCOM), and Weight and Balance Manual, for example. If the
aircraft is certificated for Extended Twin Operations (ETOPS), then a Configuration,
Maintenance and Procedures document would be prepared to cover all ETOPSspecific
items.