This is the latest procedural requirements.

VFR-continue in VMC

land at the nearest suitable aerodrome

report arrival by the most expeditious means to ATC

IFR-VMC.

continue in VMC

land at the nearest suitable aerodrome

report arrival by the most expeditious means to ATC

IFR-IMC not under radar (no regional agreement applies) , maintain the last assigned speed and level or minimum flight altitude if higher, for a period of 20 minutes following the aircraft’s failure to report its position over a compulsory reporting point and thereafter adjust flight level and speed in accordance with filed flight plan; Land within 30 minutes of ETA or EAT.

IFR-IMC under radar (no regional agreement applies) maintain the last assigned speed and level, or minimum flight altitude if higher, for a period of seven minutes following: setting 7600 / failure to report /last assigned level achieved, whichever is later then proceed iaw filed flight plan. Land within 30 minutes of ETA or EAT.

IFR-IMC When being radar vectored or having been directed by ATC to proceed offset using RNAV without a specified limit, proceed in the most direct manner possible to rejoin current flight plan route no later than the next significant point, taking into consideration the applicable minimum flight altitude; Land within 30 minutes of ETA or EAT.

IFR-IMC under radar climb (regional air navigation agreement applies); maintain for a period of three minutes the level to which it was cleared and then continue in accordance with the current flight plan. Land within 30 minutes of ETA or EAT.