AIM-54 launch in PD STT = no active guidance? (@ DEVS)

Problem is that both missiles have these systems, they're just implemented differently, and compared to our data on the -A a lot of the -C stuff is conjecture. In any case we're not at a stage where this makes any difference in DCS apart from numbers for countermeasure rejection and seeker performance.

There must be a difference between AIM-54A and AIM-54C, because AIM-54C has ISA.

This can be confirmed in the public "APPROVED NAVY TRAINING SYSTEM PLAN FOR THE AIM-54 PHOENIX MISSILE".

https://www.globalsecurity.org/military/library/policy/navy/ntsp/aim54.htm

The problem is to confirm how ISA works. If ISA is only used as an aid to semi-active data sampling, AIM-54C is similar to AIM-54A.

On the contrary, that would be similar to AIM-120.

"Aviation Ordinance Man 2 & 3 - Aviation theories and other practices", which regards AIM - 54C/D as semi-active midcourse guidance.

http://Http://navyaviation.tpub.com/14023/css/Phoenix-Missile-108.htm

I guess part of the problem here is that the late model Phoenix had technology borrowed from it for the development the Aim120. I would imagine that would make things like command guidance very problematic to acquire.