Tecnam P-Mentor - Page 335

1
st
Edition - Rev. 1
Section 9 - SUPPLEMENTS
S04 – KN63 DME SYSTEM
P-Mentor - Aircraft Flight Manual
Page S04-9
7. AIRFRAME AND SYSTEMS DESCRIPTION
7.1. KN63 UNIT
The KN 63 is a remote mounted, 200 channel TSO'd DME employing the latest state of
the art solid-state transmitter and large scale integrated circuit (LSI) technology.
Touching the DME box on G3xt is possible to select the NAV frequency to be followed.
The effective range of the KN 63 DME depends on many factors; most important being
the altitude of the aircraft. When the aircraft is on the ground, the KN 63 usually will not
receive DME stations due to line-of-sight signal limitations. Other contributing factors to
the DME's effective range are the location and altitude of the ground transmitter,
transmitter power output, and the degree of maintenance of the ground facility.
The distance measured by the KN 63 is slant-range distance (measured on a slant from
aircraft to ground station) and should not be confused with actual ground distance.
The difference between ground distance and slant-range distance is smallest at low
altitude and long range. These differences may differ considerably when in close
proximity to a VOR/DME facility.
However, if the range is three times the altitude or greater, this error is negligible.
In order to obtain accurate ground distance and time-to-station, the aircraft must be
tracking directly to or from the station.
7.2. ANTENNA INSTALLATION
The DME receiver (KN63) and GAD43e are installed under baggage compartment in
the tail cone. The DME antenna is Comant CI 105-16 and it is installed under the
fuselage, in the middle of it on the right side.
Figure S04-2 – CI-105-16 DME Antenna