Tennessee flying changes quickly from the Mississippi River side to the high country near the Virginia line. KMEM (Frederick W Smith Intl/Memphis) is the heavy-runway anchor with 11,120 ft of pavement, four runways, ILS capability, tower service, plus two FBOs. KBNA (Nashville Intl) gives the middle of the state an 11,030 ft towered ILS field at 599 ft elevation. The east side asks for more terrain awareness. KTYS (Mc Ghee Tyson) has 10,000 ft of runway at 986 ft elevation near Knoxville. KTRI (Tri-Cities) sits higher at 1,519 ft, with 8,000 ft of runway serving Bristol, Johnson City. Kingsport. KCHA (Lovell Fld) adds another towered ILS option with 7,400 ft at 683 ft elevation. Away from the biggest airports, Tennessee is mostly non-towered. The state has 76 public-use airports, 67 of them non-towered, plus 16 airports with ILS capability. KSRB (Upper Cumberland Rgnl), KUCY (Everett-Stewart Rgnl). KMRC (Maury County Rgnl) are useful examples: each is non-towered, has ILS capability, has an FBO. offers at least 6,000 ft of runway. That mix makes Tennessee good for IFR cross-country planning, but weather and terrain still drive the go or no-go call.