6 ▁they ▁introduced ▁the ▁tur bo charg ed ▁ 1 1 2 TC ▁and ▁a ▁version ▁mount ing ▁a ▁larger ▁engine ▁and ▁other ▁minor ▁improvements ▁as ▁the ▁Rock well ▁Commander ▁ 1 1 4 . ▁A ▁total ▁of ▁approximately ▁ 1 , 0 0 0 ▁examples ▁of ▁all ▁models ▁were ▁produced ▁before ▁the ▁production ▁line ▁shut ▁down ▁in ▁ 1 9 8 0 . ▁ ▁The ▁rights ▁to ▁the ▁design ▁were ▁sold ▁to ▁Commander ▁A ircraft ▁ 1 9 8 8 . ▁They ▁improved ▁the ▁interior ▁and ▁made ▁other ▁minor ▁up gr ades ▁to ▁the ▁Commander ▁ 1 1 4 B ▁series , ▁released ▁in ▁ 1 9 9 2 . ▁Appro xim ately ▁ 2 0 0 ▁examples ▁were ▁produced ▁before ▁they ▁shut ▁down ▁in ▁ 2 0 0 2 . ▁Another ▁attempt ▁to ▁begin ▁production ▁was ▁made ▁by ▁Commander ▁Premier ▁who ▁planned ▁a ▁Commander ▁ 1 1 5 ▁series , ▁however , ▁, ▁financial ▁issues ▁had ▁delayed ▁production ▁in def initely . ▁ ▁Development ▁ ▁Original ▁production ▁ ▁In ▁ 1 9 7 0 ▁Rock well ' s ▁A ero ▁Commander ▁division ▁developed ▁a ▁new ▁line ▁of ▁aircraft ▁that ▁would ▁span ▁everything ▁from ▁the ▁fixed - ge ar ▁four - se at ▁market ▁to ▁a ▁ret ract able ▁tw in - engine ▁six - se at ▁design ▁ ▁The ▁first ▁models ▁of ▁this ▁line up ▁were ▁two ▁versions ▁of ▁a ▁four - se at ▁low - wing ▁mon op lane , ▁the ▁fixed ▁tr icy cle ▁landing ▁g ear ▁Commander ▁