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A
747-400 MAINTENANCE MANUAL
 S 865-055
 (5)  Push the RUN/STOP key to start the test.
 (a) Make sure TCAS annunciates "Monitor Vertical Speed".
 NOTE: A crossing descend resolution advisory may be given
____ instead of the Monitor Vertical Speed resolution advisory. Decrease the intruder's altitude or increase the airplane's altitude appropriately to correct this.
 S 865-033
 (6)  
Return the airplane back to field level altitude.

 S 865-034

 (7)  
Set the radio altitude to 0 feet.

 NOTE: Decrease the radio altitude by 600 feet per minute (fpm) or
____ less. RAs are inhibited below 900 feet during descent with TCAS version 6.04a. RAs are inhibited below 400 feet during descent with TCAS change 7.0. So TA ONLY will show at low altitude.
 (a)  Make sure the ND shows the TA ONLY indication when the radio altitude is less than 400 feet.
 G. Put the Airplane Back to Its Usual Condition
 S 865-155
 (1) Remove the DO-NOT-CLOSE tags and close these circuit breakers.
 (a)  P7 Overhead Circuit Breaker Panel: 1) 7F22, LANDING GEAR DSP & CONT PRI 2) 7F23, LANDING GEAR DSP & CONT ALTN 3) AIRPLANES WITH THE "GND SAFETY RELAY" CIRCUIT BREAKER
 INSTALLED AT PANEL GRID LOCATION 7H08; 7H08, GND SAFETY RELAY
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
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 (2)  Remove the electrical power if it is not necessary (AMM 24-22-00/201).
 TASK 34-45-00-735-067
 4.  System Test - TCAS (With the TIC T-49 Test Set)__________________
 A. General
 (1)  This test is a complete system test of the TCAS. The system test first runs the TCAS Operational Test, and then does a test of the TCAS using ground test equipment.
 B. Equipment
 (1)  
TCAS/ATC ramp test set - TIC T-49
 TEL - Instrument Electronics Corp.
 728 Garden St.
 Carlstadt, N.J. 007072
 or equivalent.

 (2)  
Pitot/Static test set - Castleberry AT700-5D (or equivalent)

 (3)  
Radio Altimeter test set

 C. Reference
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 31-61-00/501, Integrated Display System (IDS)

 (3)  
AMM 32-09-02/201, Air/Ground Relay System

 (4)  
AMM 34-21-00/501, Inertial Reference System (IRS)

 (5)  
AMM 34-33-00/501, Radio Altimeter System

 (6)  
AMM 34-53-00/501, Air Traffic Control (ATC)

 (7)  
AMM 45-10-00/201, Central Maintenance Computer System (CMCS)

 D. Prepare for the System Test
 S 865-068
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 215-069

 (2)  
Make sure this circuit breaker is closed:

 (a)  P7 Overhead Circuit Breaker Panel
 1) 7A5, TCAS

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
 2) 3) 4)  7F22, LANDING GEAR DSP & CONT PRI7F23, LANDING GEAR DSP & CONT ALTNAIRPLANES WITH THE "GND SAFETY RELAY" CIRCUIT BREAKER INSTALLED AT PANEL GRID LOCATION 7H08; 7H08, GND SAFETY RELAY
 S 215-070
 (3)  Make sure these systems are serviceable: (a) Integrated Display System (AMM 31-61-00/501) (b) Air Data Computing System (AMM 34-12-00/501) (c) Inertial Reference System (AMM 34-21-00/501) (d) Radio Altimeter System (AMM 34-33-00/501) (e) Air Traffic Control (AMM 34-53-00/501) (f) Flight Management Computer System (AMM 34-61-00/501) (g) Central Maintenance Computer System (AMM 45-10-00/201)
　
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