STATIC DISCHARGERS DESCRIPTION AND OPERATION
During the flight, the aircraft becomes charged with static electricity. If the discharge of static electricity is not controlled.
it causes interferences in the communtations and navigation systems.
Static dischargers are installed on the aircraft to decrease the interferences.
Each static discharger assembly has a retainer and a static discharger. The retainer is attached to the structure with rivets.
discharger is attached to its retainer with one screw, to make it easy to replace.
The static discharger assemblies are installed at the tips of -:
The horizontal stabilizer
The vertical stabilizer
They are also installed on the trailing edges of -:
The wing tip fence
The wing fixed structure
The flap track movable-fainings
The engine pylon rear-fairings
Two types of retainers are installed:
A flat retainer at the trailing edges
An angular retainer at the tips.
Two types of static dischargers are installed.
One with a straight mounting, installed at the trailing edges
One with a 30-degree angle mounting, installed at the tips.
These two types are not interchangeable.
Operation/Control and Indicating of The static dischargers -:
- Decrease the voltage level necessary to start the corona discharge
- Make very low radio-frequency field-strength in areas and thus cause a discharge in these areas
- Discharge the static electricity charge
The effect is to decrease the interferences in the communications and navigation systems
Inspection of the Static Dischargers
Examine the static dischargers to make sure that:
there is no distortion
there is no damage to the covers
there is no corrosion of the bases
there is no damage to the tips
the screws are tight and serviceable
they are correctly attached.