GTN 650Xi GPS/NAV/COMM/MFD for Experimental Aircraft

Estimated Availability: January 2023

Part No:

Manufacturer: GARMIN

Add Powerful Nav/Comm Capabilities to Your Panel

  • 10 W or 16 W Comm and 200 channel Nav with VOR/localizer and glideslope receiver
  • Automatically displays tuned frequency's navaid or airport identifier
  • Automatically decodes Morse signals so you don't have to
  • Advanced standby monitoring means you'll never miss an ATC call while listening to ATIS
  • Bright sunlight-readable display

As compact as it is capable, the GNC 255 can bring powerful Nav/Comm capabilities to virtually any cockpit. Not only does the GNC 255 meet the basic needs of most pilots – including adhering to new airspace requirements in Europe – it also features a number of advanced features that save you time and effort. It also contains an internal VOR/LOC converter and 40-channel glideslope receiver.

Choose Your Installation

GNC 255

The GNC 255 is available in 2 versions to fit your needs. Each version comes with 25 kHz frequency channel spacing and 8.33 kHz channel spacing. The GNC 255 is available with either 10 W or 16 W of transmitter output, letting you find the right balance of power and price. It includes a 2-place intercom that’s ideal for 2-seat aircraft; no additional hardware is required to communicate with your passenger. It also contains an internal VOR/LOC converter and a 40 channel glidescope receiver. Plus, remote frequency flip-flop capability can help in demanding operating environments like helicopters, letting pilots keep their hands on the controls.

Reduce Your Workload

In addition to traditional Nav/Comm features, the GNC 255 incorporates a number of functions that can save you time and effort. Provide the GNC 255 with an airport or navaid identifier and it will automatically find all available frequencies (and vice versa) thanks to a built-in, updateable database. With a compatible GPS input, the device will find the nearest airport to your location and easily access its weather, center and FSS frequencies. You'll have the confidence to know you're talking to the right controller every time. The Nav/Comm's database technology also allows you to quickly pull up your most frequently or most recently used frequencies. The device even automatically decodes a station’s Morse code to provide a positive identification – no aural decoding required.

The GNC 255 will provide distance, time and speed when installed with a compatible GPS source like our GTN or GNS series avionics. All information is displayed on a bright sunlight-readable display so you can quickly read it all at a glance. And when paired with a G500, G500H, G600 or G3X flight display, it allows for the display of VOR and ILS indications on the PFD and can follow autopilot commands. Alternatively, you can use an HSI or CDI like our MD200-306, which has been specifically designed to work with the GNC 255.

Listen to 2 Frequencies with 1 Comm

With the standby frequency-monitoring feature in the GNC 255, you won’t have to worry about missing an ATC call or other critical transmission. The GNC 255 allows you to listen to ATIS without leaving your assigned ATC channel. Swapping your active and standby frequencies is done with a single touch of a button. Pressing and holding frequency transfer key will automatically set the emergency frequency as your active radio. You can use the built-in timer to assist with approaches, holds and other assigned maneuvers.


Need night vision?

For pilots flying patrol aircraft or helicopters while using night vision goggles (NVGs) to aid visual surveillance, the GNC 255 series NAV/COMM radios are available in versions that offer NVG-compatible displays. Featuring readouts and lighting designed to suppress light waves in the red to near-infrared (NIR) spectrum, these radios screen out distracting light interference for NVG operations – while providing crisp, vivid display readability under all lighting conditions, from nighttime to bright daylight.

  • Nav/Comm with VOR/localizer and glideslope receiver
  • 10W transmitter output (16W version available, see GNC-255B)
  • 25 kHz frequency channel spacing and 8.33 kHz channel spacing to meet the impeding Single European Sky mandate (European operaters by 2018)
  • Built-in VOR/Localizer converter
  • Database lookup of frequencies using navaid ID
  • VOR receiver displays to/from and radial
  • Digitally decoded OBS setting
  • Sunlight readable full alphanumeric display
  • Automatic display of station ID by decoding Morse code
  • Interfaces with most CDI (w/resolver), HSI, and autopilot systems
  • Flight Service Stations, ATC facilities, WX stations, etc.
  • Active and standby flip-flop frequencies
  • One-touch 121.5 emergency channel tuning
  • Comm frequency monitor function (listens to standby while monitoring the active)
  • Recall of frequency from database by facility name and type
  • Database reverse lookup of frequencies providing station ID andfrequency use (TWR, ATIS, etc.)
  • Volume control bar graph display
  • Alphanumeric display of frequency types (ATIS, GRND, TWR, etc.)
  • High-visibility alphanumeric LCD display
  • Transmit status indicator
  • Backlit keypad controls
  • Automatic and manual, pilot-selectable display intensity control
  • Built-in, two-place voice activated intercom
  • Frequency memory and recall
  • Stores/recalls 15 user defined frequencies
  • Stores/recalls previous 20 frequencies used
  • Squelch test function
  • Stuck mic time-out
  • 12W audio amplifier
  • TSO applicability: C34e; 2C34f; C36e Class A; 2C36f Class A; C40c; 2C40c; C74d Class A; C112e; C128a; 2C128; C146e Class 3; C151d Class A, B; C157b Class 1, 2; 165b; C169a Class C, E, 3, 4, 5, 6; 2C169a Class C, E, H2, 3, 4, 5, 6; C194; C195b Class B1, B3, B5, B7; C209
  • Display size: 4.9" (125 mm) diagonal
  • Display resolution: 834 pixels (W) x 370 pixels (H)
  • Unit bezel height: 2.65" (67 mm)
  • Unit bezel width: 6.25" (159 mm)
  • Unit depth with connectors: 11.25" (286 mm) (measured from face of aircraft panel to rear of connector backshells)
  • Unit weight: 5.5 lbs (2.48 kg)
  • Input voltage range: 11 VDC - 33 VDC
  • Operating temperature range: -20° C to 55° C (-4° F to 131° F)
  • Number of GPS channels: 15 (12 GPS and 3 GPS/WAAS/SBAS)
  • LAT/LON position accuracy: <1.25 meter RMS horizontal, < 2 meter vertical, with WAAS
  • Maximum velocity: 1,166 knots
  • Position update Interval: 0.2 sec (5 Hz)

Garmin products have been designed for compatibility with a wide range of avionics. To confirm compatibility of Garmin equipment with your specific aircraft make/model and current avionics configuration, please consult your Authorized Garmin Dealer.

Interface

Manufacturer

Model

Notes/Info

Air Data Computer

B & D

90004-003

 

Honeywell (Bendix/King)

KDC 281
KDC 481

 

Insight

TAS 1000

 

Altitude Serializer/Encoder

Garmin

GTX 327

 
 

ACK Technologies

A-30 (Mod 8 and above)

 
 

ARNAV

FC-10

FT-10

 
 

Electronics International

FP-5L

 
 

Icarus Instruments

3000

 
 

JP Instruments

EDM-700

 
 

Sandia

SAE 5-35

 
 

Shadin

833811-00 (AIS-380)

8800T
9000T
9200T

F/ADC-200

F/ADC-2000

91204XT(38)D (Miniflo-L)

91053XP (Digiflo-L)

91053XT-D (Digiflo-L)

912802-( ) (Digidata)

 
 

Trans-Cal Industries

IA-RS232-X
SSD120

 

Audio Panel

Garmin

SL10
SL10MS
SL10M
SL10S
SL15
SL15M
GMA 340
GMA 347
GMA 35(c)
GMA 350(c)/350H(c)

 

Honeywell (Bendix/King)

KMA 24
KMA 24H-70/71
KMA 26
KMA 28

 

PS Engineering

PMA 6000
PMA 7000 Series
PMA 8000 Series

 

Autopilot

Garmin

GFC 500

GFC 600

 
 

Bendix

M4C
M4D

 
 

Century

I/II/III/IV
21/31/41
2000
Trident
AK 1081

 
 

Cessna

300B/400B/800B
300 IFCS/400 IFCS/800 IFCS/1000 IFCS

 
 

Collins

APS 65 ( )

 
 

Honeywell (Bendix/King)

KAP 100/140/150
KFC 150/200/250/300
KFC 225/275/325

 
 

Sperry

SPZ 200A/500

 
 

S-TEC

System 20/30/40/50/55/60-1/60-2/60 PSS/65
System 55X
ST-901

 

Datalink Weather Display and Control

Garmin

GDL 69/69A
GSR 56

GDL 69A also provides SiriusXM radio entertainment.
GSR 56 also provides text/voice communication

DME Control

Collins

DME 40
DME 42

 

Honeywell (Bendix/King)

KN62/62A
KN63
KN64
KDI 572/574
KDM 706

 

Narco

DME 890
IDME 891

 

EFIS

Garmin

G500/G600

TXi Series

G5

G3X Touch

 

Avidyne

EXP5000

 

Honeywell (Bendix/King)

EFS 40/50 (SG 465)

 

EHSI

Sandel

SN 3308
SN3500/4500

 

FIS-B Weather Display and Control

Garmin

GDL 88

 

Fuel/Air Data

Garmin

GTX 327

 

ARNAV

FC-10
FT-10

 

Electronics International

FP-5L

 
 

JP Instruments

EDM-700

 

Shadin

F/ADC-200
F/ADC-2000
91204XT(38)D (Miniflo-L)
91053XP (Digiflo-L)
91053XT-D (Digiflo-L)
912802-( ) (Digidata)

 

IRU/AHRS

Collins

AHS-85E

 

Lightning Detection Display and Control

L-3 Communications

WX-500

 

Multifunction Display

Garmin

GMX 200
MX20

 

Avidyne

EX500
EX5000

 

NAV Indicator

Garmin

GI 102/A
GI 106/A

 

Century

NSD 360A
NSD 1000

 

Collins

331A-6P
331A-9G
PN101 (331A-3F/3G)
IND-351D

 

Honeywell (Bendix/King)

KI 202A/203/204/206
KI 208/A
KI 209/A
KI 525A
KPI 552/B
KPI 553/A/B

 

Mid Continent

MD222-402
MD222-406
MD200-302/303/306/307

 

Sperry

RD 444
RD 550A
RD 650

 

S-TEC

ST 180

 

Synchro Heading Source

Bendix/King

KI-525A

 

TAS/TCAS/TIS Traffic Display and Control

Garmin

GTS 800/820/850
GTX 330/33/330D/33D

 

Avidyne (Ryan)

TAS 6XX (TCAD 9900BX)

 

Honeywell (Bendix/King)

KMH 880 (KMH 820)
KMH 980 (KMH 920)
KTA 870 (KTA 810)
KTA 970 (KTA 910)

 

L-3 Communications

SKY497 (Skywatch)
SKY899 (Skywatch HP)

 

Terrain Avoidance and Warning System

Honeywell (Bendix/King)

KGP 560
KMH 880 (KMH 820)
KMH 980 (KMH 920)

 

Transponder Display and Control

Garmin

GTX 32
GTX 327
GTX 328
GTX 33/33D
GTX 330/330D

GTX 325/335(R)/345(R)

 

Weather Radar Display and Control

Garmin

GWX 68
GWX 70

GWX 75

 

Bendix/King

RDS 81 (RS 811A)
RDS 82 (RS 181A)
RDR 2000 (ART 2000)
RDR 2100 (ART 2100)

See below for answers to our most popular questions.

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