At 16:00 06 August 2014, Papa3 wrote:
On Wednesday, August 6, 2014 10:30:03 AM UTC-4,
wrote:
I have an LS8sT (from DG) which is exhibiting the same problem, leaking
f=
rom the outer tank to the inner tank - its a later one (post Sn 8500),
and
=
my manual says to fill the outer tanks first.
=20
=20
=20
Does anyone have any experience with these?

Hi,

I haven't looked at the TM library in a long time, but I have to believe
it=
is the same problem. The tanks were not designed to cross-feed from
inner=
to outer, and IIRC the only way for water to flow was through the
venting
=
system. Shouldn't be too hard to observe if you can put a wing
partially
=
filled with water on a saw horse and stick a cheap boroscope up against
the=
point where the tubes run through the bulkhead/rib. =20

P3


Having continued to scour the internet I've come across this

http://www.dg-flugzeugbau.de/Data/TM-LS/LS8/TM8012.pdf

The implication is that later serial numbers shouldn't have TB 8006
applied,
also it would seem unlikely that the design wasn't changed following a
mandatory AD.

What is that additional drain point for? Where does it exit the wing?
Presumably it is blocked off at some point?