34-12-00 AIR DATA SYSTEM Back
A. System Function
The Air Data System (ADS) gives the primary functions related to the airspeed and the altitude of the aircraft. The altimeters (Ref. 34-13-00) show the altitude and the Electronic Flight-Instrument System (EFIS) (Ref. 34-26-00) shows the airspeed.
B. System Components (Ref. Fig. 1 thru Fig. 3)
(1) There are two air data sub-systems, the No.1 and the No.2 ADS.
(2) The primary components of the ADS are the:
C. System Operation
The ADS gets an input of the pitot pressure and the static pressure from the pitot/static system (Ref. 34-17-00). It uses these inputs, together with an input of the TAT, to calculate the airspeed and the altitude.
The Air Data System (ADS) gives the primary functions related to the airspeed and the altitude of the aircraft. The altimeters (Ref. 34-13-00) show the altitude and the Electronic Flight-Instrument System (EFIS) (Ref. 34-26-00) shows the airspeed.
B. System Components (Ref. Fig. 1 thru Fig. 3)
(1) There are two air data sub-systems, the No.1 and the No.2 ADS.
(2) The primary components of the ADS are the:
- Two Digital Air-Data Computers (DADC)
- True Airspeed (TAS) temperature indicator (No.1 ADS only)
- Total Air-Temperature (TAT) probe
C. System Operation
The ADS gets an input of the pitot pressure and the static pressure from the pitot/static system (Ref. 34-17-00). It uses these inputs, together with an input of the TAT, to calculate the airspeed and the altitude.
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