Abnormal Start Protection (Ground Starts Only)
During ground starts, the EEC monitors engine parameters to detect impending
hot starts, EGT start limit exceedances, and wet starts. These protection features
do not function during inflight starts.
If an impending hot start is detected by a rapid rise in EGT or EGT approaching
the start limit, the white box surrounding the EGT digital readout flashes. The
flashing white box resets when the start lever is moved to CUTOFF or the engine
reaches idle N2.
If the EGT exceeds the starting limit, the EGT display, both box and dial, turn red.
The EEC automatically turns off the ignition and shuts off fuel to the engine. The
alert terminates and the display returns to white when EGT drops below the start
limit. Following shutdown of both engines, the EGT box turns red to remind the
crew of the exceedance.
A wet start occurs if the EGT does not rise after the start lever is moved to IDLE.
If a wet start is detected, the EEC turns off the ignition and shuts off fuel to the
engine 15 seconds after the start lever is moved to IDLE.
During ground starts, the EEC monitors engine parameters to detect impending
hot starts, EGT start limit exceedances, and wet starts. These protection features
do not function during inflight starts.
If an impending hot start is detected by a rapid rise in EGT or EGT approaching
the start limit, the white box surrounding the EGT digital readout flashes. The
flashing white box resets when the start lever is moved to CUTOFF or the engine
reaches idle N2.
If the EGT exceeds the starting limit, the EGT display, both box and dial, turn red.
The EEC automatically turns off the ignition and shuts off fuel to the engine. The
alert terminates and the display returns to white when EGT drops below the start
limit. Following shutdown of both engines, the EGT box turns red to remind the
crew of the exceedance.
A wet start occurs if the EGT does not rise after the start lever is moved to IDLE.
If a wet start is detected, the EEC turns off the ignition and shuts off fuel to the
engine 15 seconds after the start lever is moved to IDLE.
