This standard provides minimum performance criteria for air data instruments intended to provide cockpit indication of:

1. a Indicated airspeed (V_i)
2. b Computer airspeed (V_c)
3. c True airspeed (V_t)
4. d Equivalent airspeed (V_e)
5. e Mach number (M)
6. f Altitude (H)
7. g Vertical speed (H_pr)
8. h Maximum operating limit speed (V_mo)
9. i True angle of attack (α_t)
10. j Free air temperature (T_fat)
11. k Total temperature (T_t)

These functions shall be derived from a central air data computer (AS 417) and through system wiring applied to the respective indicator.