S_pugh, if the surface drives the cryptic, and in doing so forces an abbreviation to be indicated indirectly, that is a case of the tail wagging the dog. It's a clue to a clue, and as such I think it's unacceptable. Where does one draw the line? If it's acceptable to indicate D by 'departed' because 'departed' means died, then one could clue F as 'succeeding' on the grounds that 'succeeding' means following, C as 'overcast' because it means the same as cloudy.
I'm not saying this is what the setter has necessarily done. It may be just a mistake that's been missed by the editors. But if the rationale is 'departed' = 'died' = D, then that's the thin end of the wedge for me.