This standard specifies two types of steady-state acceleration tests and five severity classes of acceleration that are used by civil aircraft onboard equipment to simulate the slowly varying acceleration environment encountered during aircraft operations.
JIS W 0821:2002 history
2002JIS W 0821:2002 Environmental tests for aircraft equipment -- Steady-state acceleration
1994JIS W 0821:1994 Environmental tests for aircraft equipment -- Part 3.2: Steady state acceleration