RDMI-743: Digital Indicator

The Collins series of digital Radio Magnetic Indicators (RMIs) and Radio/Distance Magnetic Indicators (RDMIs) includes the RMI-733 and RDMI-743 system numbers.

These instruments share a number of common features including electrical, servo, thermal, packaging and lighting design, as well as product serviceability.

All units interface with new technology sensors. The following table indicates the specific part number and unique features application to the listed aircraft types.

Type	Part Number	Aircraft	Select Knobs	Bezel Color	Legend	Notes
RDMI-743	622-5001-109	757/767	Yes	Boeing brown	DME L and DME R	Dual pointers indicate bearing to station for either ADF or VOR mode. Liquid crystal digital readout for DME indication.
RDMI-743	622-5001-110	757/767	Yes	Boeing brown	DIST L and DIST R	Same as 622-5001-109 except also displays FMC waypoint bearing and distance-to-go to waypoint.
RDMI-743	622-5001-111	767	No	Boeing brown	DME L and DME R	Same as 622-5001-109 except without switches. Displays VOR bearing only.
RDMI-743	622-5001-112	767	Yes	Boeing brown	DME L and DME R	Same as 622-5001-109 except bearing flag inhibited in true heading mode.
RDMI-743	622-5001-501	A-300-600 A-310	No	Gray	DME L and DME R	Dual pointers indicate VOR bearing to station. Liquid crystal digital readout for DME indication.
RDMI-743	622-5001-502	A-300-600	Yes	Gray	DME L and DME R	Dual pointers indicate bearing to station for either ADF or VOR mode. Liquid crystal digital readout for DME indication.
RDMI-743	622-5001-503	A-320	No	Blue-Gray	DME L and DME R	Same as 622-5001-501 except for color.
RDMI-743	622-5001-504	A-320	Yes	Blue-Gray	DME L and DME R	Same as 622-5001-502 except for color.
RDMI-743	622-5001-601	MD-88	Yes	Gray	DME 1 and DME 2	Dual pointers indicate bearing to station for either ADF or VOR mode. Liquid crystal digital readout for DME indication plus special software for MD-88 and processor for external switching.
RDMI-743	622-5001-602	MD-88	No	Gray	DME 1 and DME 2	Dual pointers indicate VOR bearing to station. Liquid crystal digital readout for DME indication plus special software for MD-88 and processor for external switching.