A. Aircraft Maintenance Configuration
(1)
Make sure that the access platform is in position at the access door 824 in zone 128.
(2)
Make sure that the access door 824 is open.
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B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
49VU NAV/ADF/1 1RP1 H14 R 121VU COM NAV/ADF/2 1RP2 K02
R
4. Procedure
_________
Subtask 34-53-31-420-050
A. Installation of the ADF Receiver
(1)
Clean the component interface and/or the adjacent area.
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Remove the blanking caps from the electrical connectors (2).
(4)
Make sure that the electrical connectors (2) are clean and in the correct condition.
(5)
Install the ADF Receiver (1) on its rack (3).
(6)
Push the ADF Receiver (1) on its rack (3) to connect the electrical connectors (2).
(7) Engage the nut (4) and the lug (5) and tighten.
Subtask 34-53-31-865-054
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1RP1, 1RP2
Subtask 34-53-31-740-050
C. Do the BITE test of the ADF (Ref. TASK 34-53-00-740-003).
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5. Close-up
________
(Ref. Fig. 401/TASK 34-53-31-991-001) Subtask 34-53-31-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the access door 824 (Ref. TASK 52-41-00-410-002).
(3)
Remove the access platform(s).
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VOR/MARKER - DESCRIPTION AND OPERATION
______________________________________
1. General
_______
R **ON A/C 001-004, 051-060,
A. Foreword The VOR/MARKER comprises two independent systems in a same receiver :
-
a VOR system for the radio navigation phase
-
a MARKER (MKR) system for the landing approach phase. The two VOR/MKR receivers are interchangeable but only one marker system is installed on the aircraft.
B. VOR System The VOR system is a radio aid to medium-range navigation. The aircraft is equipped with two VOR systems which can accept ground station signals in the frequency range of 108 MHz to 117.95 MHz. These signals are processed and conditioned to provide the crew with :
-identification of a selected ground station
-
indication of the aircraft position with respect to the station (bearing information)
-
indication of the aircraft angular deviation from a selected course.
C. MARKER System The marker system is a radio navigation aid. It is normally used together with the Instrument Landing System (ILS) during an ILS approach. The system determines the distance between the aircraft and the runway threshold. The marker system also marks particular airway and holding points. The system provides visual and aural indications of the passage of the aircraft over the marker transmitters located on the ground.
**ON A/C ALL
R Post SB 34-1147 For A/C 001-004,051-060,
A. Foreword The VOR/MARKER comprises two independent systems in a same receiver:
-
a VOR system for the radio navigation phase,
-
a MARKER (MKR) system for the landing approach phase. The two VOR/MKR receivers are interchangeable but only one marker system is installed on the aircraft.
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B. VOR System The VOR system is a radio aid to medium-range navigation. The aircraft is equipped with two VOR systems which can accept ground station signals in the frequency range of 108 MHz to 117.95 MHz. These signals are processed and conditioned to provide the crew with:
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