Lawson Laslo
Pre-takeoff checklist
- Joined
- Jan 18, 2019
- Messages
- 403
- Location
- Sundance airport Oklahoma
- Display Name
Display name:
N2005H
didnt get a picture but when I sumped the fuel in one tank it was a darker than usual blue? Any idea why?
3 tanks but can only sump 2 only 1 was dark blue, we had drained all the fuel out of the whole plane to weigh it, and just added new fuel and the fuel we had drained yesterday via plastic jugs but the fuel was from airport, and when I went to sump the fuel today it was dark blue in one of the tanksEither they added more dye than usual, or the fuel was evaporated and concentrated the dye. Those are my best guesses. How about the other tank(s)? The phrasing makes me think you have more than one tank.
Since you got the fuel from the airport perhaps take a good sample in a clean jar and ask the fuel provider for ideas. You might get a free analysis out of the deal??Any idea why?
When we had dark blue it was from areas where a leak had occurred and the fuel evaporated, leaving behind more dye than usual to be moved by the new fuel to interesting places.
This was not from a sump; but did you leave that tank fairly empty for a long time? Long enough to evaporate some fuel left in the bottom and then added some more fresh fuel to mix it all up again?
^^^^^^I bet the fuel sump drain valve has a really slow seep that lets the fuel evaporate and leaves the dye inside the valve's outlet, where it mixed with the fuel when you sumped, darkening the sample.