Ultimate Guide to Aircraft Instrument Parts and Avionics Components

Aircraft Instruments and Avionics Components

Aircraft instruments and avionics refers to the Electronic Systems used on Aircraft, artificial satellites, and spacecraft. These systems include communications, navigation, the display and management of multiple systems, and the hundreds of systems that are fitted to aircraft to perform individual functions.

We supply aircraft instruments and avionics equipment from top manufacturers around the world. Some of the manufacturers that provide high-quality components are: Aerosonic, Honeywell, Bendix King, Sigma Tek, Gull, Ametek/GE, S-TEC, and Farem srl.

Aviators all over the world rely on Global Positioning Systems (GPS) to safely navigate and maneuver their aircraft. GPS allows pilots to obtain precise three-dimensional location data during all stages of flight using triangulation; GPS can also track speed, relative distance, and time. With its continuous, accurate, and comprehensive mapping capabilities, it offers seamless satellite navigation that satisfies many requirements for pilots.

A typical GPS system is composed of three integral systems: the ground control segment, the user segment, and the space (satellite) segment. The ground control segment is comprised of a series of ground stations that are used to interpret and relay satellite signals to various receivers. These ground stations have a master control station, twelve ground antennas, and sixteen monitoring posts. The user segment of the GPS system involves different receivers from various industries such as national security, agriculture, space, surveying, and mapping. A pilot is typically considered the user component in aviation GPS; however, autopilot systems can also utilize data provided by GPS. The last component is space, which consists of 31 satellites. A minimum of 24 satellites are in operation at any given moment, ensuring that at least four satellites are in view from any point on Earth. This complete coverage makes GPS technology the most reliable navigation system in modern aeronautics.

Satellites that communicate with GPS systems orbit approximately 12,000 miles above the Earth. They are solar powered and transmit radio signals to receivers that are stationed on the ground. The GPS system receives the signals and uses triangulation— data from at least three satellites— to calculate its precise location two dimensionally. With the needed satellites in view, a three-dimensional location can be obtained.

  • Aircraft Antennae

Aircraft communication systems, navigation components, and data devices all rely on the functioning capabilities of antennae. Without the existence of antennas, aircraft would have a much harder time functioning. Modern aircraft such as the Boeing 787 are constructed with more than 20 antennae that extend from the fuselage, cockpit, wings, and tail. Aircraft are becoming more interconnected with advancements in technology, specifically, antennas.

Antennas also provide satellite communications, marker beacons, weather radars, radio navigation technology, and many more functions. The aforementioned Boeing 787 features antennas for its landing instruments, air traffic control, traffic collision avoidance systems, and many other functions. Proper maintenance and routine inspections should be practiced ensuring its longevity.

Electronic circuits are built from a small number of standard components, and similarly to a LEGO, you can arrange these components together in a vast number of ways to complete an array of jobs. Fundamental electronic components include resistors, diodes, capacitors, transistors, and relays.

Resistors are the simplest part in any circuit. Their main function is to limit the flow of electrons and decrease the current (voltage) that is flowing by transforming electrical energy into heat. Resistors can come in any different size or shape, and choosing one depends on specific application requirements. Devices that have volume controls are known to use variable resistors that contain a dial on them and can be manually operated.

Diodes are comparable to one-way streets in a city; electric currents flow through them strictly in one direction. Sometimes diodes are referred to as rectifiers. These diodes also have the special ability to change alternating currents into direct currents.

Capacitors are designed with simplicity in mind, similar to resistors. They consist of two pieces of conducting material separated by a non-conducting material referred to as a dielectric. Capacitors are commonly used in timing devices; however, they can transform electrical currents in multiple ways.

Transistors can function in various ways; they can switch electric currents on and off or amplify them as a whole. In computers, transistors that act as switches mainly serve memory functions. When they act as amplifiers, they can boost the volume in items such as radios. When two transistors are combined together, they form a new device called a logic gate. These logic gates are effective in carrying out basic decision-making processes.

In layman's terms, a relay is essentially an electrically operated switch. Relays use an electromagnetic mechanism to operate the switch it is assigned to. This isn’t the case for all of them though; other relays can function with solid-state technology that sends a small external voltage which triggers the on and off tool. Relays have the ability to control a high current circuit with a low current signal. They can also sense when there is a malfunction in the power distribution system. You can find relays in computers, home appliances, traffic control systems, telecommunications, automobiles, and many other electronically powered products. 

Aircraft Instruments and Avionics Components

Aircraft instruments and avionics refers to the Electronic Systems used on Aircraft, artificial satellites, and spacecraft. These systems include communications, navigation, the display and management of multiple systems, and the hundreds of systems that are fitted to aircraft to perform individual functions.

We supply aircraft instruments and avionics equipment from top manufacturers around the world. Some of the manufacturers that provide high-quality components are: Aerosonic, Honeywell, Bendix King, Sigma Tek, Gull, Ametek/GE, S-TEC, and Farem srl.

Aviators all over the world rely on Global Positioning Systems (GPS) to safely navigate and maneuver their aircraft. GPS allows pilots to obtain precise three-dimensional location data during all stages of flight using triangulation; GPS can also track speed, relative distance, and time. With its continuous, accurate, and comprehensive mapping capabilities, it offers seamless satellite navigation that satisfies many requirements for pilots.

A typical GPS system is composed of three integral systems: the ground control segment, the user segment, and the space (satellite) segment. The ground control segment is comprised of a series of ground stations that are used to interpret and relay satellite signals to various receivers. These ground stations have a master control station, twelve ground antennas, and sixteen monitoring posts. The user segment of the GPS system involves different receivers from various industries such as national security, agriculture, space, surveying, and mapping. A pilot is typically considered the user component in aviation GPS; however, autopilot systems can also utilize data provided by GPS. The last component is space, which consists of 31 satellites. A minimum of 24 satellites are in operation at any given moment, ensuring that at least four satellites are in view from any point on Earth. This complete coverage makes GPS technology the most reliable navigation system in modern aeronautics.

Satellites that communicate with GPS systems orbit approximately 12,000 miles above the Earth. They are solar powered and transmit radio signals to receivers that are stationed on the ground. The GPS system receives the signals and uses triangulation— data from at least three satellites— to calculate its precise location two dimensionally. With the needed satellites in view, a three-dimensional location can be obtained.

  • Aircraft Antennae

Aircraft communication systems, navigation components, and data devices all rely on the functioning capabilities of antennae. Without the existence of antennas, aircraft would have a much harder time functioning. Modern aircraft such as the Boeing 787 are constructed with more than 20 antennae that extend from the fuselage, cockpit, wings, and tail. Aircraft are becoming more interconnected with advancements in technology, specifically, antennas.

Antennas also provide satellite communications, marker beacons, weather radars, radio navigation technology, and many more functions. The aforementioned Boeing 787 features antennas for its landing instruments, air traffic control, traffic collision avoidance systems, and many other functions. Proper maintenance and routine inspections should be practiced ensuring its longevity.

Electronic circuits are built from a small number of standard components, and similarly to a LEGO, you can arrange these components together in a vast number of ways to complete an array of jobs. Fundamental electronic components include resistors, diodes, capacitors, transistors, and relays.

Resistors are the simplest part in any circuit. Their main function is to limit the flow of electrons and decrease the current (voltage) that is flowing by transforming electrical energy into heat. Resistors can come in any different size or shape, and choosing one depends on specific application requirements. Devices that have volume controls are known to use variable resistors that contain a dial on them and can be manually operated.

Diodes are comparable to one-way streets in a city; electric currents flow through them strictly in one direction. Sometimes diodes are referred to as rectifiers. These diodes also have the special ability to change alternating currents into direct currents.

Capacitors are designed with simplicity in mind, similar to resistors. They consist of two pieces of conducting material separated by a non-conducting material referred to as a dielectric. Capacitors are commonly used in timing devices; however, they can transform electrical currents in multiple ways.

Transistors can function in various ways; they can switch electric currents on and off or amplify them as a whole. In computers, transistors that act as switches mainly serve memory functions. When they act as amplifiers, they can boost the volume in items such as radios. When two transistors are combined together, they form a new device called a logic gate. These logic gates are effective in carrying out basic decision-making processes.

In layman's terms, a relay is essentially an electrically operated switch. Relays use an electromagnetic mechanism to operate the switch it is assigned to. This isn’t the case for all of them though; other relays can function with solid-state technology that sends a small external voltage which triggers the on and off tool. Relays have the ability to control a high current circuit with a low current signal. They can also sense when there is a malfunction in the power distribution system. You can find relays in computers, home appliances, traffic control systems, telecommunications, automobiles, and many other electronically powered products. 


Part No Manufacturer Description QTY RFQ
H321AAM1 Sfena gyroscopic horizon ind Avl RFQ
AN5770-2-34 Ranco manifold pressure indicator Avl RFQ
3567707-3005 Allied Signal pressure transmitter Avl RFQ
165-059-992 Avien fuel quantity tank unit Avl RFQ
1471C-02 Kollsman periscopic sextant Avl RFQ
JG7040G-4 Honeywell fuel quantity tank unit Avl RFQ
JG7021A21 Honeywell fuel quantity indicator Avl RFQ
AY120DS Eclipse Pioneer autosyn indicator Avl RFQ
SG3A-4 Honeywell trim interrupter Avl RFQ
518-28007-219 IDC altimeter Avl RFQ
A29381 04 006 Kollsman airspeed indicator Avl RFQ
EHU-15/A Consolidated Airborne temperature indicator Avl RFQ
134383-01-23 Lear Siegler displacement gyroscope Avl RFQ
147B10 Lewis temperature indicator Avl RFQ
134363-01 Lear Siegler gyroscope Avl RFQ
PW/727MV/BU/64/660 Smith Industries temperature indicator Avl RFQ
1570B-041040 Kollsman pressure indicator Avl RFQ
6213 United Instruments fuel pressure indicator Avl RFQ
2591411-446 Sperry horizon flt director ind Avl RFQ
8DJ150WAC1 Ametek/GE tachometer indicator Avl RFQ
8KJ3AA2 Ametek/GE remote compass transmitter Avl RFQ
MG70A11 Honeywell actuator Avl RFQ
80807-003 Simmonds fuel quantity indicator Avl RFQ
WL/1350AM/MS/2 Smith Industries altimeter Avl RFQ
66745-0111 Aerosonic oil pressure indicator Avl RFQ
8DJ176WAR2 Ametek/GE engine core speed indicator Avl RFQ
586BK-0148 Kollsman airspeed indicator Avl RFQ
13023-12 Airesearch cabin pressure regulator Avl RFQ
1880843-2A Bendix fuel flow indicator Avl RFQ
JG7040A Honeywell fuel quantity tank unit Avl RFQ
8DJ142GAC2 Ametek/GE fuel flow indicator Avl RFQ
8DJ131LBA1 Ametek/GE tachometer indicator Avl RFQ
AAU-32/A-2 Kollsman altimeter Avl RFQ
BH1185-154 Howell autotemp indicator Avl RFQ
AY232-4-B Eclipse Pioneer autosyn indicator Avl RFQ
37212-65 Simmonds fuel quantity tank unit Avl RFQ
418-26044 Edison oil pressure transmitter Avl RFQ
163BL506 Lewis temperature indicator Avl RFQ
664-1 Penn Airborne liquid oxygen qty indicator Avl RFQ
9-115-19 Eldec fuel flow electronics Avl RFQ
24500-37A-1-B1 Eclipse Pioneer torque indicator Avl RFQ
JG7044A2 Honeywell vertical gyroscope Avl RFQ
8AW61LAH216 Ametek/GE voltmeter Avl RFQ
903BD Sfena gyroscopic horizon Avl RFQ
393081-113 Simmonds fuel quantity totalizer Avl RFQ
8DJ4PDF Ametek/GE liquid quantity indicator Avl RFQ
EA-1403-1-ROB Electric Auto-Lite Co vertical speed indicator Avl RFQ
71558-31-6 Meletron aneroid switch Avl RFQ
JG7013A-51 Honeywell fuel quantity tank unit Avl RFQ
DSA274-1 Consolidated Airborne attitude indicator Avl RFQ
PF36-N9 Hokushin liquid quantity indicator Avl RFQ
152BL706 Lewis temperature indicator Avl RFQ
371K-010 Kollsman altimeter Avl RFQ
314200-02-01 Lear Siegler altimeter Avl RFQ
4018285-906 Sperry altitude alert system Avl RFQ
020-917-003 Gull fuel quantity tank unit Avl RFQ
EA-1403-1Z1 Electric Auto-Lite Co vertical speed indicator Avl RFQ
5000L Electric Auto-Lite Co gyroscope Avl RFQ
24100-40A-4-A1 Eclipse Pioneer water pressure indicator Avl RFQ
800496H-OTL Lear Siegler battery temp. indicator Avl RFQ
6007-54B-7-B Eclipse Pioneer pressure indicator Avl RFQ
B-9 Abrams intervalometer Avl RFQ
C45501-10-101 Kollsman altimeter Avl RFQ
23048-008 TRW Aeronautical Systems dc starter-generator Avl RFQ
AN5736-1A Sperry gyroscopic horizon ind Avl RFQ
159871 Weston egt indicator Avl RFQ
8DJ15AAC Ametek/GE tachometer indicator Avl RFQ
25140-22A703 Globe tach generator Avl RFQ
164-010-2 Avien fuel quantity amplifier Avl RFQ
PF06-N1 Hokushin fuel quantity indicator Avl RFQ
GG301B2 Bendix King gyroscope Avl RFQ
1U262-031-1 Sigma Tek directional gyroscope Avl RFQ
23-501-033 Sigma Tek gyroscope Avl RFQ
EA308-11 Liquidometer position indicator Avl RFQ
673613-6 Sperry amplifier Avl RFQ
522-29711-4603 IDC altimeter Avl RFQ
JG7021A65 Honeywell fuel quantity indicator Avl RFQ
8KD6AB2 Ametek/GE directional gyro indicator Avl RFQ
8DJ67FBE1 Ametek/GE tachometer indicator Avl RFQ
23-501-040 Sigma Tek gyroscope Avl RFQ
5000F-1 Electric Auto-Lite Co gyroscope Avl RFQ
B118-316 Simmonds fuel quantity indicator Avl RFQ
202A-1B Alcor egt indicator Avl RFQ
8.039.708.1 Aeritalia airspeed indicator Avl RFQ
9813-25-12 Litton torque indicator Avl RFQ

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