FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 8. Engines, Fuel, Exhaust, and Propellers | 2. Fuel Systems | 8-37. Indicator Systems
AC 43.13-1B
9/8/98
8-37. INDICATOR SYSTEMS. Inspect,
service, and adjust the fuel indicator systems
according to the manufacturer’s instructions.
Determine that the required placards and in-
strument markings are complete and legible.
8-38. FUEL SYSTEM PRECAUTIONS.
In servicing fuel systems, remember that fuel
is flammable and that the danger of fire or ex-
plosion always exists. The following precau-
tions should be taken:
a. Aircraft being serviced or having the
fuel system repaired must be properly
grounded.
b. Spilled fuel must be neutralized or re-
moved as quickly as possible.
c. Open fuel lines must be capped.
d. Fire-extinguishing equipment must
always be available.
e. Metal fuel tanks must not be welded or
soldered unless they have been adequately
purged of fuel fumes. Keeping a tank or cell
filled with carbon dioxide will prevent explo-
sion of fuel fumes.
f. Do not use Teflon tape on any fuel
lines to avoid getting the tape between the flare
and fitting, which can cause fluid leaks.
8-39.8-44. [RESERVED.]
Page 8-22
Par 8-37