Winter is coming! Before conducting All Weather Operations (AWOPS), Operators of M-registered aircraft must obtain the appropriate AWOPS approval from IOMAR.

In order to gain an AWOPS approval, the operator must demonstrate compliance with the IOMAR AWOPS standards & requirements. RP39 has been produced to assist Operators of M-registered aircraft with the IOMAR AWOPS operating standards & procedures and the application process.

https://www.iomaircraftregistry.com/media/1178/rp39-all-weather-operations.pdf