Sec. 87.171  Class of station symbols.

    The two or three letter symbols for the classes of station in the 
aviation services are:

                       Symbol and class of station

AX--Aeronautical fixed
AXO--Aeronautical operational fixed
FA--Aeronautical land (unspecified)
FAU--Aeronautical advisory (unicom)
FAC--Airport control tower
FAE--Aeronautical enroute
FAM--Aeronautical multicom
FAP--Civil Air Patrol
FAR--Aeronautical search and rescue
FAS--Aviation support
FAT--Flight test
FAW--Automatic weather observation
MA--Aircraft (Air carrier and Private)
MA1--Air carrier aircraft only
MA2--Private aircraft only
MOU--Aeronautical utility mobile
MRT--ELT test
RL--Radionavigation land (unspecified)
RLA--Marker beacon
RLB--Radiobeacon
RLG--Glide path
RLL--Localizer
RLO--VHF omni-range
RLS--Surveillance radar
RLT--Radionavigation land test
RLW--Microwave landing system
TJ--Aircraft earth station in the Aeronautical Mobile-Satellite Service
[ 53 FR 28940 , Aug. 1, 1988, as amended at  57 FR 45750 , Oct. 5, 1992]