(2)
Do the ADIRS start procedure (Ref. TASK 34-10-00-860-002).
(3)
Do a flight plan entry to get a flight number.
(4)
On the SWITCHING panel 8VU:
-make sure that the AIR DATA selector switch is at NORM.
Subtask 34-52-00-865-070
B. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU COM NAV/ATC/1 5SH1 G11 121VU COM NAV/ATC/2 5SH2 K07
Subtask 34-52-00-480-054
C. Put the Mode S/ATCRBS (Air Traffic Control Radar Beacon Sys) test set and user manual in the cockpit.
(1)
Make sure that the test set is in correct condition.
(2)
Connect the test antenna to the test set.
R (3) Put the test antenna in position in the line of sight of the ATC1 (2) R top and bottom antennas.
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D. Aircraft Maintenance Configuration
(1)
On the center pedestal, on one MCDU, get the LGCIU 1 (2) page and simulate a flight condition (Ref. TASK 32-69-00-860-001)
(2)
On the center pedestal, on the ATC/TCAS control unit, set:
-
the ATC system 1(2) on
-
the ATC code 5555 to keep the traffic interference to a minimum
-
the ALT RPTG/ON/OFF switch to ON
-
the AUTO/ON/STBY switch to AUTO.
4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-220,
Subtask 34-52-00-720-064
A. Functional Test of the ATC MODE S
NOTE : Do the test for the system 1.
____
Then, do the test for the system 2.
NOTE : There are many different types of test benches. This procedure
____ gives a typical test sequence. The test sequence can change with the test bench used.
NOTE : For Elementary Surveillance (ELS) and Enhanced Surveillance (EHS)
____ capable transponders, use an Extended Squitters (ES) capable test set.
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. Set the test set (or bench) for: On the test set:
The results must show:
-
interrogation MODE A - MODE A code: 5555
-
interrogation MODE A ONLY - MODE A code: 5555 and MODE S: no reply
2. Set the Test set (or bench) for: On the test set:
The results must show:
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-------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
- interrogation MODE C - MODE C code: Z,ZZZ ft (Z,ZZZ is a number that shows approximately the local field elevation).
- interrogation MODE C ONLY - MODE C code: Z,ZZZ ft (Z,ZZZ is a number that shows approximately the local field elevation) and MODE S: no reply
3. Set the test set (or bench) for: On the test set: The results must show:
- interrogation MODE S - MODE S aircraft code: XXXXXX (the aircraft code has 6 digits and agrees with the 24-bit Mode S address). - Mode A in DF 5 format (and DF 21 format if available) - MODE C in DF 4 format (and DF 20 format if available) - Flight number/Flight ID - Acquisition Squitters: (PERIOD is between 0.8 second and 1.2 seconds in
DF 11 format). - Aircraft status: Flight (or Air)
4. Set the test set (or bench) for: On the test set: The results must show:
- POWER test - POWER: POWER is more than or equal to 125 W and less than or equal to 500 W
- FREQUENCY test - FREQUENCY: 1090 MHZ plus or minus 1 MHZ
- SENSITIVITY test - SENSITIVITY or MTL: 74 dBm plus or minus 3 dBm
- SENSITIVITY difference MODE - SENSITIVITY difference: less than or
A/MODE C equal to 1 dB
5. Set the test set (or bench) for: On the test set: The results must show:
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-------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
-antenna diversity test - antenna diversity or isolation: more than or equal to 20 dB.
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