(b)
The interface and warning system between the computer and instruments operate correctly.
(c)
The instruments operate when signals are sent to them.
B. References
(1)
AMM 24-22-00/201, Electrical Power - Control
(2)
AMM 34-22-00/501, Electronic Flight Instrument System
(3)
AMM 34-28-01/501, 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 865-004
(3)
Make sure the inertial reference systems are on and operate correctly (AMM 34-28-01/501).
S 865-005
(4)
Make sure the electronic flight instrument systems are on and operate correctly (AMM 34-22-00/501).
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A
737-300/400/500MAINTENANCE MANUAL
S 865-007
(5) 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 over the readout for numbers lower than 0.400.
E. Air Data System Test - Operational Test
S 865-095
(1)
Open the NO. 1 AIR DATA COMPUTER-1 circuit breakers on the P18 panel.
S 865-008
(2)
Make 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
S 865-011
(3)
AIRPLANES WITHOUT EIS; Make sure the TAT/SAT/TAS indicator goes out of view in less then 5 seconds.
S 865-012
(4)
AIRPLANES WITH EIS; Make sure the TAT indication on the EIS secondary display goes out of view.
(5)
Close the NO. 1 AIR DATA circuit breakers.
S 865-013
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A 737-300/400/500MAINTENANCE MANUAL
S 755-045
(6)
Make sure all the warning flags go out of view.
S 865-014
(7)
Open the NO. 2 AIR DATA COMPUTER-2 circuit breakers on the P6 panel.
S 865-015
(8)
Make sure the warning 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
S 865-016
(9)
Close the NO. 2 AIR DATA circuit breakers.
S 865-017
(10)
Make sure all the warning flags go out of view.
S 865-019
(11)
AIRPLANES WITHOUT EIS; Set the LIGHTS switch on the pilot's center instruments panel, P2, to the TEST position.
(a) Make sure all parts of the TAT/SAT/TAS indicator flash.
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