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Avionics

The onboard electronics used for piloting an aircraft are called avionics (AVI-ation electr-ONICS). Avionics include communications and navigation systems, autopilots, and electronic flight management systems (FMS). more...

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Onboard electronics that are unrelated to piloting tasks, such as video systems for passengers, are sometimes considered avionics as well. Many of these devices include embedded computers.

History

Radiotelephone (two way voice radio) systems have been installed in aircraft since before World War II, and have been widely used for mission coordination and air traffic control. Early systems used vacuum tubes, and because of their weight and size, were installed out of the way with only a control head in place in the flight deck. Standardization on VHF frequences occurred shortly after World War II, and transistor radio systems replaced the tube-based systems shortly afterward. Only minor changes have been made to these systems since the 1960s.

The earliest navigation systems required the pilot or navigator to wear headphones and listen to the relative volume of tones in each ear to determine which way to steer on course.

Later, navigation systems developed along five separate paths:

  • NDB/ADF systems
  • VOR systems
  • ILS systems
  • ATCRBS Transponders
  • Distance Measuring Equipment
  • GPS receivers

Non-Directional Radiobeacon

The NDB (non-directional radiobeacon) was the first electronic navigation system in widespread use. The original radio range stations were high-power NDBs, and followed nighttime routes previously delineated by colored light beacons. DF (direction finder) and ADF (Automatic Direction Finder) avionics can receive signals from these. A needle shows the pilot the relative heading toward the station compared to the centerline of the aircraft. NDBs use the LF and MF bands, and are still in use today (2005) at smaller airports because of their low cost but their use is quickly being supplanted by GPS. This is due mostly from the higher cost of ADF equipment in the aircraft and maintaining the NDB stations.

Read more at Wikipedia.org


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Avtech Range Filter 828-1 $25.00 Icarus Model 3000-U Mode C Serializer $85.00
Kdm 706 Dme $995.00 Dayton Granger, Inc. Elt Atenna Elt10-209-2 $275.00
20,000Ft Kollsman Ifr Certifed With 8130-3 $125.00 Narco Mk12E 760ch Cessna Rt385 / Rt485 Replacement $699.99
Astronautics Corp. Of America Flight Computer $40.00 Cessna 195 Airspeed Ohc With 8130-3 $75.00
Lowrance 2000C $250.00 Narco Voa821 Tsoed Nav Indicator Guaranteed like Ki208 $299.99
"Used" Cessna 172 Fuel Sender Unit P/N 0523557-1 $0.99 Bendix/King tray connector contacts Kx155/Kma24/ect $9.99
"Used" Narco Ar-850 Altitude Reporter 25 Pin $0.99 United Altimeter 5934Pa-1 $19.00
Honeywell/Allied King Kln90/A/B Gps Nav Database $10.00 Collins Microline Vir351 Tso'd 200 Ch Nav Guaranteed $169.99
Aircraft Press-To-Test Lights With Dimmer, Set Of 3 $45.00 Military Aircraft Parts Indicator Light 830-701-1H $59.00
Collins Radar Nav $450.00 2 1/4 Inch 14Vdc T&B Faa Ohc With 8130-3 $275.00
Narco Ar-500 Altitude Reporter $75.00 Flight Director with 8130 tag $150.00
Aircraft Instrument Hoskins 28 Vdc Power Supply $75.00 "New" Ptc Surface Thermometer $0.99
Aircraft Tachometer Piper Cessna others $10.00 Garmin Avionics Gdl69 Xm install connector kit New $35.00
Aircraft Primer Cessna others $20.00 Vintage Sanderson Flight Computer & Felsenthal Plotter $4.50
Garmin Avionics Gdl69 Data Link mount Rack New $29.00 Garmin 496 $5.00
Flight Director $100.00 Arc/Cessna Rt359A Tso'ed Transponder Guatanteed $449.99
Aircraft Push Button Switch With Guard, New $16.00 airplane compass airpath, and bendix servo amp ind 551a $0.99
King Kn 62 Dme With Tray, Connectors And Install Manual $950.00 Monroy Atd-300 Traffic Watch $100.00
Bendix King Transponder ModeC Aviation Cessna Airplane $750.00 Arc For Cessna Nav/Com 28V. 385 A $695.00
Kx 165 Nav/Com - No Glideslope $10.00 Bendix-King Ka-58 Dme Hold Adapter 071-0016-00 $25.00
Bendix King Ki-201C Vor Indicator $85.00 Sporty's E6B Electronic Flight Computer- Like New $50.00
Headset from Cp-107 Argus $10.00 Flite-Tronics Inverter Pc-16 $175.00
Narco Mk12D Cessna Nav Com Rt 328 Direct Replacement $350.00 "Used" Assortment Of Grimes Cockpit Floodlights $9.99
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Prices current as of last update, 11/07/09 3:37pm.

See also...
Audio Panels, Avionics, Aviation Parts
Flight Controls, Avionics, Aviation Parts
GPS, Avionics, Aviation Parts
Handhelds, Avionics, Aviation Parts
Indicators, Avionics, Aviation Parts
Intercoms, Avionics, Aviation Parts
NAV/COMs, Avionics, Aviation Parts
Other Avionics, Avionics, Aviation Parts
Transponders, Avionics, Aviation Parts

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