3.9.1 The crew operating an alternative and/or
equivalent design performs operational tasks, maintenance and inspection
in accordance with the prevalent requirements, as stated in the management
system on board.
3.9.2 The crew needs to comprehend the nature
of the alternative and/or equivalency and any differences in operation
as well as in maintenance and inspection routines compared to a standard
feature. It is anticipated that the alternative and/or equivalency
will be documented in the safety management system, and thus it is
a part of familiarization routines.