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.