Great info with examples in https://www.aopa.org/-/media/files/aopa/home/advocacy/coldtemprestrictionspresentation.pdf > [!quote] From [[AIM 7]]-3 > Pilots must request approval from ATC whenever applying a cold temperature altitude correction. Pilots do not need to inform ATC of the final approach segment correction (i.e., new MDA or DA). This request should be made on initial radio contact with the ATC facility issuing the approach clearance. >[!example] >[KTVL LDA 18](https://cfijack.com/latest-plate-redirect/?plate=05416LDA18.PDF)