After Centaur Four-Nine destroys the Troika emplacement in Landown, some dialogue becomes mismatched. KR Five-One and KR Three-Six are mistaken for each other.
"Guess you don't need my help at all, Delta. Control, Delta is clear." - Evidently Five-One, as it is hovering over the destroyed Troika emplacement and it is not a gunship variant
"Copy, Five-One. Rigs need CAP near Barrington Square." - Anya, correctly acknowledging the chopper as 'Five-One'.
"Copy that, Control, Three-Six on its way. See ya on the side, Delta." - Despite being acknowledged as Five-One by Anya, the pilot states that her chopper is Three-Six. Whilst this could actually be Three-Six at the town's perimeter responding to Anya, and that Five-One just didn't acknowledge and went ahead to provide CAP, it doesn't explain the next line of dialogue.
"Copy, thanks Five-One." - Marcus, again acknowledging the chopper as Five-One as Anya had done, though after the pilot stated that it was Three-Six.
As seen in Act 5, KR Three-Six is a King Raven gunship variant, with wing stubs for extra weapon hardpoints. The King Raven in dispute is not a gunship variant, proving it is Five-One. Therefore, it may just be an error in the game and that 'Three-Six on its way' should actually be 'Five-One on its way'.
Another possibility is that Five-One was stating that Three-Six would provide CAP instead.