2.The following data items shall be made available to the transponder and be transmitted by the transponder as requested by the ground-based surveillance chain, via the Mode S protocol and in accordance with the formats specified in ICAO document 9871 (2nd edition):
(a)
MCP/FCU selected altitude;
(b)
roll angle;
(c)
true track angle;
(d)
ground speed;
(e)
magnetic heading;
(f)
indicated airspeed (IAS) or mach number;
(g)
vertical rate (barometric or baro-inertial);
(h)
barometric pressure setting (minus 800 hectoPascals);
(i)
track angle rate or true airspeed if track angle rate is not available.