Provides a fuel low level warning system for the earlier Commander Models except 680T, 680V, 680W, 681.
Modification to add reinforcing straps to the lower spar cap between wing stations 38.00 left and right. Models 500, 500A, 500B, 520, 560, 560A, 560E, 560F, 680, 680E, 680F, 680FL, 680F(P), 680FL(P), 720, RL26C, RL26D.
To provide safety feature of prevention of ice formation over fuel tank vents; operates automatically when pitot heat is used. Models 560A, 560E and 680.