Rule 17D: If an intrinsic airfield (a city hex, for instance) is reduced to zero capacity, can it be abandoned?

Question:
If an intrinsic airfield (a city hex, for instance) is reduced to zero capacity, can it be abandoned? If it can, can it be rebuilt normally?

Answer:
No, the intrinsic capacity of a city is not an “airfield”, it is intrinsic capacity, so the abandonment rules [which specify airfields] do not apply to intrinsic capacities. Moreover, the cited rule even specifies which types MAY be abandoned, ie permanent and temporary. The intrinsic capacity of a hex is neither of the types specified so the rule does not apply.

Source:
Errata published at http://www.hmsgrd.com/Files/Europa/Second Front/Second Front.pdf