Functional Description - Nose Sensing
The nose air safety sensor sends target position signals to the nose air sensing proximity switch card. The proximity switch card operates nose ground sense relays.
This is the sequence for the nose air sensing when the airplane is on the ground:
- Target moves far from the nose air safety sensor - Nose air sensing proximity switch card sends
electrical ground to nose ground sense relays - Nose ground sense relays energize.
The opposite of the above happens when the airplane is in the air. The nose sensing in air red light comes on when the nose air sensing is in the air mode.
Functional Description - Air Sensing
The air safety sensor sends target position signals to the air sensing proximity switch card. The proximity switch card operates air sense relays.
- Target moves far from the air safety sensor
- Air sensing proximity switch card sends electrical
ground to air sense relays
- Air sense relays energize
- Air sensing in air red comes on.
The opposite of the above happens when the airplane is on the ground.
Functional Description - Ground Sensing
The ground safety sensor sends target position signals to the ground sensing proximity switch card. The proximity switch card operates ground sense relays.
This is the sequence for the ground sensing when the airplane is on the ground:
- Target moves near the ground safety sensor - Ground sensing proximity switch card sends
electrical ground to ground sense relays - Ground sense relays energize.
The opposite of the above happens when the airplane is in the air. The ground sensing in air red light comes on when the ground sensing is in the air mode.