It is a warning light to pilots in poor visibility that there is a tall building there
If you mean the light gun signals from the control tower- to vehicles, and aircraft on the ground, get off the runway. For aircraft in flight, runway is unsafe, do not land.
The power supply unit must be toasted.
It means get off the runway now, or, if flying, do not land here.
what does the flashing tranmission light mean on a 1995 Isuzu trooper mean
return to ramp
An engine cylinder misfire has been detected if your check engine light is flashing
its mean that
Somthing wrong with transmission.
A flashing light with timed periodic movements.
Proceed with caution.
unknown
A red flashing light on a Droid usually means that your phone has 15% or less battery left and is about to die!