Why would this plane dump fuel immediately after takeoff?

Aviation Airlines
1

flightaware.com/live/flight/COA366

And continue all the way to its destination?

KSEA → KIAH

I snapped a series of photos of it 2-4 minutes after take off, thought it was interesting…

http://www.bahneman.com/liem/photos/DayTrips/2007/April_06_2007/tn/crw_1703-1.med.jpg

Rest of series here

2

Might be a psi. relief or an over flow. I don’t think any a/c dumps from just one side. I know my Lear could dump from just one, but there was no reason for it. MAYBE a fuel imbalance, but that’s fixed with x-flow.

3

Looks like the fuel overflow vent, rather than a pilot-controlled fuel dump

4

thanks all, learn something every day