Action
Notice of proposed rulemaking (NPRM).
Summary
This action proposes to modify the designated altitudes of restricted area R-4201B, Camp Grayling, MI, by raising the restricted area ceiling from 9,000 feet mean sea level (MSL) to 23,000 feet MSL to match the ceiling of the adjacent restricted area R-4201A, Camp Grayling, MI. Additionally, this action proposes to make minor administrative changes to the R-4201B time of designation information and the R-4201A and R- 4201B using agency information to standardize the format of the information provided describing these restricted areas.