Aerospool WT9 Dynamic LSA / Club, Pilot Operating Handbook

Page: 187 / 204

Initial issue Page 8-9
Fuel Contamination and Sampling
Each fuel system drain must be sampled by draining into a clear sample cup. If sampling reveals contamination,
sample again repeatedly until all contamination is removed. If evidence of significant contamination remains, do not
fly until a mechanic is consulted. The fuel system must be drained and purged and the source of contamination
determined. If improper fuel grade has been used, do not fly until the fuel system is drained and refueled with an
approved fuel grade.
The fuel drain valves are located in the lowest point of each tank on wings and fuselage bottom surfaces (Fig. 8-5).
Drain each fuel tank to remove accumulated water if any as follows:
WARNING
MASTER SWITCH and IGNITION must be switched OFF!
Nobody is allowed to be in the cockpit!
WARNING
Smoking and naked flames during fuel draining is prohibited!
WARNING
Do not use materials which can cause static electricity during fuel
draining!
Fuel sampling:
a. MASTER SWITCH Check OFF
b. IGNITION Check OFF both circuits
c. BRAKE Check PARK
d. Fuel tank cap Open
e. Suitable bottle Place below the drain valve
f. Drain valve
Push and drain a small quantity of fuel and check
g. Drain valve Close and check
h. Fuel tank cap Close and make sure that opening arm directs rearward