TM 55-1510-219-10
e. NAC LOW Light Illuminated. Illumination of the #1
or #2 NAC LOW caution light indicates that the affected
tank has 20 minutes remaining at sea level, maximum
cruise power consumption rate. Proceed as follows:
W A R N I N G
Failure of the fuel tank venting system will
prevent the fuel in the wing tanks from gravity
feeding into the nacelle tank. Fuel vent system
failure may be indicated by illumination of the
#1 or #2 NAC LOW caution light with greater
than 20 minutes of usable fuel indicated in the
main tank fuel system. The total usable fuel
remaining in the main fuel supply system with
the LOW FUEL caution light illuminated may
be as little as 114 pounds, regardless of the total
fuel quantity indicated. Continued flight may
result in engine flameout due to fuel starvation.
1. Twenty minutes fuel remaining - Confirm.
2. Land as soon as possible.
9-28. ELECTRICAL SYSTEM EMERGENCIES.
a. DC GEN Light Illuminated. Illumination of a #1 or
#2 DC GEN caution light indicates failure.
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