User's Manual

FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Page 30 Publication No. 150-047012
Dec 2005 Rev. D
General Description SD-442
The SD-442 is a panel mounted DME Selector Display providing the pilot the means to control the CDM-451
modes and to display DME information. The unit provides a full time display of distance and ground speed to
either the NAV 1 or NAV 2 selected VORTAC. Annunciation of the active NAV system is displayed below the
distance readout. The system permits holding the active station frequency in memory, thus freeing the active
navigation receiver for channeling. Annunciation of the hold (HLD) mode is provided below the displayed held
NAV frequency.