(b)  
The interface and failure warning system between the computer and instruments operates.

 (c)  
The instruments operate when signals are sent to them.

 B.  References
 (1)  
AMM 24-22-00/201, Electrical Power - Control

 (2)  
AMM 34-28-00/501, Inertial Reference System

 C.  Access
 (1)  Location Zones
 211/212 Flight Compartment

 D.  Prepare for the Operational Test
 S 865-002
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 865-003

 (2)  
Close the ADS circuit breakers on the load control panels, P6 and P18.

 S 865-006

 (3)  
Close the TAT IND circuit breaker on the load control panel, P18.

 NOTE:____All the flags go out of view when you apply power. When the mach OFF flag goes out of view, a black cover goes on the display for numbers lower than 0.400.
 E.  Air Data System - Operational Test
 S 865-007
 (1)  Open the NO. 1 AIR DATA COMPUTER-1 circuit breakers on the P18 panel.
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 (2)  S 865-008Make sure the warning flags on these captain's instruments come into view in less than the time shown. (a) Altimeter -5 seconds (b) VSI Indicator - 15 seconds (c) Mach/Airspeed Indicator - 10 seconds 1) Mach 2) Airspeed 3) Vmo
 (3)  S 865-009Make sure the TAT/SAT/TAS indicator goes out of view in less than 5 seconds.
 (4)  S 865-014Close the NO. 1 AIR DATA circuit breakers.
 (5)  S 865-013Make sure all the warning flags go out of view.
 (6)  S 865-015Open the NO. 2 AIR DATA COMPUTER-2 circuit breakers on the P6 panel.
 (7)  S 865-016Make sure the flags on these F/O's instruments come into view in less then the time shown. (a) Altimeter -5 seconds (b) VSI Indicator - 15 seconds (c) Mach/Airspeed Indicator - 10 seconds 1) Mach 2) Airspeed 3) Vmo
 (8)  S 865-018Close the NO. 2 AIR DATA circuit breakers.

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737-300/400/500MAINTENANCE MANUAL
 S 865-017
 (9)  
Make sure all the warning flags go out of view.

 S 865-020

 (10)
 Set the LIGHTS switch on the center instruments panel, P2, to the TEST position.

 (a)  Make sure all parts of the TAT/SAT/TAS indicator flash.
 S 865-023
 (11) Set the TEST SELECT switch on the DADC to the FUNCTION position.
 NOTE: AIRPLANES WITH INERTIAL VSI'S;
____ The VSI OFF flag will come into view when you push the ADC PUSH TO TEST switch.
 S 865-029
 (12)
 Set the BARO correction on the altimeters to 29.92 inches Hg.

 S 865-022

 (13)
 Push and hold the PUSH TO TEST switch on the ADC.

 (a)  
Make sure the TEST VALID WHEN LIT light on the ADC comes on in approximately 30 seconds.

 (b)  
Make sure these indicators show the values that follow:

 NOTE: The TAT/SAT/TAS indicator receives input from the No. 1
____
 ADC.

 1) Altitude 10,000 |40 feet
 2) Mach 0.785 |0.01
 3) Airspeed 440 |2 knots
 4) Total Air Temperature + 0.1 |2°C
 5) Static Air Temperature - 29.4 |2°C
 6) True Airspeed 477.8 |6 knots

 NOTE: To change the mode of the TAT/SAT/TAS indicator
____ push the switch on the front of the indicator.
 S 865-024
 (14) Set the TEST SELECT switch to the SLEW position.
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