IFATCA Policy is:

ATC equipment provided should include back-up secondary equipment on hot standby for use if the primary equipment becomes degraded.

Controllers should be given initial and recurrent training in the degraded mode operations of their equipment.

ATS management shall ensure that ATS equipment is regularly maintained, by properly trained and qualified technical staff, to ensure its availability and reliability.

ATS management shall design adequate fault reporting procedures and publish required rectification times.

ATCOs should not use equipment that is known to be unserviceable, unreliable, or inaccurate for the provision of ATS.

When designing and introducing new ATM-equipment the vulnerability and possible abuse of this equipment should be considered, and precautionary measures should be taken.