SAE AS 290A:1971-03-15

The requirements listed in Section 4 shall apply to all regularly assigned flight crew members. Due to limitations that it would place upon basic airplane design, it is not considered practical for these requirements to apply fully to the so-called jump seat. However, it should be emphasized that every effort should be made to provide the jump seat position with an equivalent level of comfort and safety.

In drawing up the requirements for the crew members' seats, the following items should be considered at all times: