Yak 18T Flight Operations Manual
Page 75 of 82
Disclaimer: This manual is to be used as a reference only, it is based on translated Yak 18T Flight Operations
Manuals and has not been approved by the Yakovlev Design Bureau or any other authority.
deflected to the left and occupy a space between 3 and 5 dots, and the glide-path
pointer will go upwards and occupy the position between 3 and 5 dots. A MARKER
window must be illuminated on the annunciation panel
•
switch-off the apparatus by using a switch on the control unit
In-flight apparatus operation when the landing system is used
To provide operation of the apparatus in flight, proceed as follows –
•
switch the apparatus on using the switch on the control unit
•
set the ILS switch to be position
•
by using the frequency set control, provide on the counter a beacon frequency of the
system of the airfield where the aircraft will land
•
as soon as the aircraft enters the action zone of the heading and glide path beacons
on the instrument, the magnetic indicators will function and the pointers will show
the aircraft diversion from the heading and glide path equi-signal zones
•
while over flying the outer and inner marker locators, a MARKER will be illuminated
on the annunciation panel as long pulses (dashes) and short pulses (dots) when
flying over the outer and inner marker locators, respectively
•
after landing, switch the apparatus off using the switch on the control unit and the
circuit breaker at the switchboard
Intercommunication System
General Information
This system is designed to provide –
•
getting on for a radio contact for the crew members by a radio set
•
inter-aircraft radio communication for the crew members between each other
•
capability for all crew members to listen to one radio-navigation device
•
reception of two signals DANGEROUS ALTITUDE and of a marker receiver by the
crew members. Besides, aural presentation of the intercommunication signals to two
additional operators is provided. Two user's sets are placed at the left and right
boards of the instrument panel. Two main connectors for connecting the airman's
headset are mounted on the brackets in a zone of the door edge. The
intercommunication system is supplied from 27V DC circuit
Use of the intercommunication system
Users
Functional capabilities
Controls
Position
Instructor
Cadet
Switching-on the
intercommunication
power from the aircraft
electrical wiring system
Circuit break of Switchboard
+
Getting on for a radio
contact
Push-button
RADIO
On the yoke
+
+
Push-button
INTERCOM
SYSTEM
On the yoke
+
+
Listening to radio
compass
Toggle-switch
RADIO
COMPASS-OFF
On the user’s
apparatus
+ +
Apparatus maintenance
Power switching on
The circuit breaker of the apparatus on the
cadet’s switchboard
Switch on
Содержание 18T
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