I had asked back in August, and unsure where else I should ask. Please forgive me for a double-post; edited for clarity.
Two possible erratas: first in the Alpha Strike Companion, and then retroactive Errata to the Master Unit List (specific links below).
Alpha Strike Companion p.113. Clan Battle Armor Weapons Conversion Table --> Direct Fire Ballistics --> Battle Armor LB-X Autocannon
"Flak" is missing from the Notes section on the far right hand side.
Per TacOps p.412 - "Battle Armor Combat Data table" the weapon is a coded "DB, C/F" for Direct Ballistic, Cluster/Flak.
p. 286 "Battle Armor LB-X Autocannon" reference: this weapon deals up to 4 damage in 1-point clusters, [resolve hits as if by Missile Attack (Cluster Hits Table = 4 x {#/active suits})
The damage appears to have already been calculated properly for Flak weapons in AlphaStrike (Cluster Hits table for "4" rack, avg 7 = 3; -1 flak multiplier = x1.05; 3 x 1.05 = 0.315).
As Battle Armor weapons are multiplied by their troop factor when calculating their AlphaStrike weapon values, I have determined the following:
. . (0.315 x 3.5 troop factor =
1.1025 damage at Short and Medium for CAR4, CAR5) = qualifies for FLK Special...
. . (0.315 x 4.5 troop factor =
1.4175 damage at Short and Medium for CAR6) = qualifies for FLK Special...
Assuming this is actual errata for the ASC, I have managed to find a handful of units that require Retroactive Updates based on their Record Sheets and respective TRO entries:
Black Wolf [LB-X]: TRO3145 p.11, 66 (RS), RS3145_Unabridged p.422
. add "FLK1/1/-" to the listed unit's Specials
Thunderbird (Upgrade) (LB-X): RS3145_Unabridged p.27
. add "FLK1/1/-" to the listed unit's Specials
Thunderbird II (Standard): XTRO_Republic_2 p.16
. add "FLK1/1/-" to the listed unit's Specials