kjenks
First Post
If you're talking about the Hover feat, the answer depends on which round your dragon is trying to charge in.
SRD
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HOVER [GENERAL]
Prerequisite: Fly speed.
Benefit: When flying, the creature can halt its forward motion and hover in place as a move action. It can then fly in any direction, including straight down or straight up, at half speed, regardless of its maneuverability. ...
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In the first round, when it starts to hover, it can't charge because it has already used a move action to initiate hovering, so it can't take the full round action needed to charge.
In a subsequent round, it could cease hovering and charge, but it would be subject to the usual rules for charge attacks and aerial combat.
Since it has Average maneuverability, charging may cause it to stall and fall if it doesn't maintain its minimum forward speed during the charge. The hover feat is of no use in that situation because the dragon would need to use a move action to start hovering.
SRD
===
HOVER [GENERAL]
Prerequisite: Fly speed.
Benefit: When flying, the creature can halt its forward motion and hover in place as a move action. It can then fly in any direction, including straight down or straight up, at half speed, regardless of its maneuverability. ...
===
In the first round, when it starts to hover, it can't charge because it has already used a move action to initiate hovering, so it can't take the full round action needed to charge.
In a subsequent round, it could cease hovering and charge, but it would be subject to the usual rules for charge attacks and aerial combat.
Since it has Average maneuverability, charging may cause it to stall and fall if it doesn't maintain its minimum forward speed during the charge. The hover feat is of no use in that situation because the dragon would need to use a move action to start hovering.