ORIGINAL: Ambassador
If I recall properly, it's only a chance for a coordination penalty, not an automatic lack of coordination, though.
You are correct. "The chance of uncoordination is doubled"
This is the whole section on coordination:
7.2.1.11 COORDINATING STRIKES
Each base or ship containing an air unit is considered a unique entity for purposes of determining
offensive Missions and Escorts. Under certain circumstances planes flying different Missions
and planes flying from different starting points will coordinate their attacks. Coordination of
attack is determined by several factors. Type of Aircraft, altitude selection, and point of origin all
help discriminate coordination such that it is more difficult to mount massive raids of several
different types of aircraft. The result is a smaller, more selective raid formation.
During the Resolution Phase the computer forms up air strikes from each base/ship depending
on the orders the air units have been given and the information those units have about the
enemy’s forces. Planes that are performing offensive Missions and their accompanying Escorts,
all flying from the same base/ship to the same target hex, will not necessarily fly together
if they have different Missions.
For example, you could have 3 bomber units flying together from the same airfield, with 1 each
to bomb an airfield, a port and a ground unit within the same target hex. 2 fighter groups flying
escort and another fighter group flying a Sweep Mission could accompany these bombers. A
plane flying a Recon Mission could also accompany them.
If the Bomber groups were the same type (Medium bomber for example) they would stand a
greater chance of coordinating than if they were 1 Dive Bomber group, 1 Attack Bomber Group,
and 1 Light Bomber Group.
Air strikes from different bases/ships flying to the same target hex will approach the Target
together if the range to the target hex is the same. This allows aircraft carriers to coordinate
their attacks. However, before the attacks are made, there is a chance that some of the units
will become separated from each other and this may result in piecemeal attacks on the target.
In addition, a unit may escort attacks originating at another base/ship if the escorting unit has
a Target that matches the target being attacked, and the escorting fighter is closer to the target
than the aircraft being escorted. Occasionally this can occur even if no priority target is set for
the escorting unit.
(
Additional Aircraft Carrier coordination considerations:)
The coordination of air strikes is affected by how many Carrier aircraft are based in
the TF launching a strike. The chance of uncoordination is doubled under the following
circumstances:
»» Allied TF in 1942 and the number of aircraft in the TF is greater than 100 + rnd (100).
»» Allied TF in 1943 and the number of aircraft in the TF is greater than 150 + rnd (150).
»» Allied TF in 1944 or later or a Japanese TF at any time and the number of aircraft in the TF is greater than 200 + rnd (200).