TM 1-1520-238-T-7
10–84
10–12. HELICOPTER FUEL SYSTEM – VISUAL CHECK
10–12
Tools:
Nomenclature
Part Number
Tool Kit, Aircraft
SC518099CLA01
Mechanic’s
Personnel Required:
67R
Attack Helicopter Repairer
WARNING
Jet engine fuel is explosive, flammable, and toxic to skin, eyes, and
respiratory. Work in a well ventilated area away from open flames. Wear
protective clothing. If fuel comes in contact with eyes or skin, flush with
water and get medical aid.
1. Visually examine helicopter exterior for signs of fuel leakage (fig. 10–40). Look at the ground beneath the
helicopter as well as the fuselage. Pay particular attention to the fuel cell areas, the ammunition bay and the
aft avionics bay.
NOTE
Minor fuel leaks from overboard vent tubes are normal in warm climates
because of fuel expansion.
2. Complete the visual check as follows:
Task
Result
a. Are fuel leaks present?
If fuel leaks are present, go to paragraph 10–13.
b. Place fuel sample container under forward
sump drain hose. Press and hold forward
push-to-drain control (fig. 10–41).
If fuel does not flow from sump drain hose, go to
paragraph 10–15.
c. Release the forward push-to-drain control.
If fuel continues to flow from sump drain hose, go to
paragraph 10–14.
d. Check the fuel sample taken from the
forward fuel cell.
If fuel is contaminated, go to paragraph 10–16.
e. Place fuel sample container under aft sump
drain hose. Press and hold aft push-to-drain
control.
If fuel does not flow from sump drain hose, go to
paragraph 10–15.
f. Release the aft push-to-drain control.
If fuel continues to flow from sump drain hose, go to
paragraph 10–14.
g. Check the fuel sample taken from the aft
fuel cell.
If fuel is contaminated, go to paragraph 10–16.
3. Properly dispose of fuel samples.
END OF TASK
