TM 1-1510-224-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
(d)
Fuel quantity indicators - Compare
indication. With full fuel tanks, left
and right fuel quantity indicators
must indicate within 35 pounds of
each
other
with
fuel
quantity
indicator selector switch set to
AUXILIARY.
*13.
Pitot tubes (2), stall warning vane,
heated
fuel
vents
(2),
and
TAS
temperature probe - Check as follows:
WARNING
Use caution when checking pitot tubes, stall warning
vane, heated fuel vents, and TAS temperature probe
for heat by feel. The heating elements in these items
can produce enough heat to cause burns to
personnel who touch them.
(a)
STALL WARN heat switch - ON.
C55
(b)
PITOT heat switches (2) - ON.
(c)
FUEL VENT heat switches (2) - ON.
C56
(d)
Left wing heated fuel vent - Check
by feel for heat and condition.
(e)
Stall warning vane - Check by feel
for heat and condition.
(f)
Left pitot tube - Check by feel for
heat,
condition,
and
free
of
obstructions.
C33
(g)
Right pitot tube - Check by feel for
heat,
condition,
and
free
of
obstructions.
C33
2-5
