
(b) Drop in fuel pressure.
(c) Drop in gas pressure.
(d) Drop in tail-pipe gas temperature
and trailing of white smoke.
Causes: (a) Throttle pulled back further than
idling position.
(b) Stoppage of fuel supply.
(c) Insufficient injection pressure at
high altitudes.
(2) Broken vanes in jet unit:
Indicated by: Vibration of the unit.
Action: Turn off the jet to prevent the fuel
lines from breaking and causing a fire.
(3) Damaged turbine starter vanes:
Indicated by: (a) Fuel pressure increases rapidly.
(b) Gas pressure increases rapidly.
(c) Gas temperature increases rapidly.
Action: Turn off the jet unit immediately
to avoid fire.
(4) Injection nozzle clogged:
Indicated by: (a) Fuel pressure increases rapidly.
(b) Gas temperature is abnormally high
or low.
Action: Turn off the jet unit immediately
to avoid fire.
(5) Loss of oil or oil pump inoperative:
Indicated by: (a) RPM surges upward.
(b) Gas temperature rises to the limit
of gage.
Action: Turn off the jet unit immediately
to avoid fire.
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