• RX – runway extension fix
• FA – VFR final approach fix
• CF – final approach course fix
• FF – final approach fix
• IF – initial approach fix
• OM – outer marker
• MM – middle marker
• IM – inner marker
• BM – back course marker
• MD – minimum descent altitude
• A – (+ an alpha) step down fix
• RW – runway threshold
• MA – missed approach point other than RW
• TD – touchdown point inboard of RW.
Alpha suffixes are also DME points. Eg. D095L would be 12DME (L = 12th letter) on the 095 radial.