Apparatus

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sensors Mode-S transponder

A690FB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N522GJ · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST LEASING INC

Hex
A690FB
Octal
51510373
Decimal
10,916,091
Country
US
Tail
N522GJ
Type
CRJ7
Broadcasting now · callsign GJS4612 · 4,775 ft
Flights observed
633
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:45 UTC

Current position

A690FB is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A690FB falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
GJS4188 GoJet Airlines 9 2026-07-25
GJS4588 GoJet Airlines 8 2026-07-22
GJS4390 - 8 2026-07-02
GJS4615 - 7 2026-07-13
GJS4587 GoJet Airlines 7 2026-07-25
GJS4561 GoJet Airlines 7 2026-07-24
GJS4509 GoJet Airlines 7 2026-07-20
GJS4394 GoJet Airlines 7 2026-07-19
GJS4181 GoJet Airlines 7 2026-07-25
GJS4593 GoJet Airlines 6 2026-07-23
GJS4578 - 6 2026-07-19
GJS4519 GoJet Airlines 6 2026-06-11
GJS4497 - 6 2026-07-04
GJS4494 GoJet Airlines 6 2026-07-20
GJS4472 - 6 2026-07-04
GJS4466 - 6 2026-06-26
GJS4432 GoJet Airlines 6 2026-07-20
GJS4381 GoJet Airlines 6 2026-06-02
GJS4613 - 5 2026-06-24
GJS4591 GoJet Airlines 5 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GJS4505 STL → EWR Jul 26, 18:50 UTCJul 26, 19:40 UTC50m
2026-07-26 GJS4499 EWR → DCA Jul 26, 17:05 UTCJul 26, 17:45 UTC40m
2026-07-26 GJS4575 EWR → STL Jul 26, 14:45 UTCJul 26, 15:50 UTC1h 5m
2026-07-26 GJS4444 EWR → DCA Jul 26, 12:50 UTCJul 26, 13:35 UTC45m
2026-07-25 GJS4455 GSO → EWR Jul 25, 23:40 UTCJul 26, 00:45 UTC1h 5m
2026-07-25 GJS4418 DCA → EWR Jul 25, 21:29 UTCJul 25, 22:18 UTC49m
2026-07-25 GJS4418 DCA → EWR Jul 25, 21:15 UTCJul 25, 22:20 UTC1h 5m
2026-07-25 GJS4612 MSN → ORD Jul 25, 19:10 UTCJul 25, 19:50 UTC40m
2026-07-25 GJS4461 PWM → IAD Jul 25, 17:05 UTCJul 25, 17:55 UTC50m
2026-07-25 GJS4181 EWR → DCA Jul 25, 14:25 UTCJul 25, 15:25 UTC1h 0m
2026-07-25 GJS4188 IAD → EWR Jul 25, 12:25 UTCJul 25, 13:20 UTC55m
2026-07-25 GJS4498 EWR → PIT Jul 25, 10:30 UTCJul 25, 11:15 UTC45m
2026-07-25 GJS4546 GSP → ORD Jul 25, 02:40 UTCJul 25, 03:30 UTC50m
2026-07-25 GJS4587 RIC → EWR Jul 25, 00:05 UTCJul 25, 00:35 UTC30m
2026-07-25 GJS4587 RIC → EWR Jul 25, 00:01 UTCJul 25, 00:35 UTC34m
2026-07-24 GJS4534 GSO → EWR Jul 24, 22:05 UTCJul 24, 22:35 UTC30m
2026-07-24 GJS4545 ORD → MLI Jul 24, 19:00 UTCJul 24, 20:10 UTC1h 10m
2026-07-24 GJS4424 EWR → CVG Jul 24, 16:55 UTCJul 24, 18:05 UTC1h 10m
2026-07-24 GJS4485 EWR → DCA Jul 24, 14:55 UTCJul 24, 15:20 UTC25m
2026-07-24 GJS4498 EWR → PIT Jul 24, 13:20 UTCJul 24, 13:40 UTC20m
2026-07-24 GJS4561 PWM → IAD Jul 24, 00:00 UTCJul 24, 00:20 UTC20m
2026-07-23 GJS4393 PQI → EWR Jul 23, 22:20 UTCJul 23, 22:45 UTC25m
2026-07-23 GJS4545 ORD → MLI Jul 23, 19:55 UTCJul 23, 21:05 UTC1h 10m
2026-07-23 GJS4424 EWR → CVG Jul 23, 17:00 UTCJul 23, 18:10 UTC1h 10m
2026-07-23 GJS4181 EWR → DCA Jul 23, 14:45 UTCJul 23, 15:50 UTC1h 5m
2026-07-23 GJS4188 IAD → EWR Jul 23, 12:40 UTCJul 23, 13:45 UTC1h 5m
2026-07-23 GJS4428 DCA → EWR Jul 23, 10:15 UTCJul 23, 11:05 UTC50m
2026-07-23 GJS4414 DCA → EWR Jul 23, 03:30 UTCJul 23, 04:25 UTC55m
2026-07-23 GJS4593 EWR → STL Jul 23, 01:30 UTCJul 23, 02:15 UTC45m
2026-07-23 GJS4593 EWR → STL Jul 23, 01:28 UTCJul 23, 02:17 UTC49m
2026-07-22 GJS4588 EWR → RIC Jul 22, 23:20 UTCJul 23, 00:15 UTC55m
2026-07-22 GJS4387 EWR → HHH Jul 22, 19:10 UTCJul 22, 20:00 UTC50m
2026-07-22 GJS4387 EWR → HHH Jul 22, 19:09 UTCJul 22, 20:00 UTC51m
2026-07-22 GJS4420 IAD → LGA Jul 22, 17:05 UTCJul 22, 18:00 UTC55m
2026-07-22 GJS4506 STL → IAD Jul 22, 13:55 UTCJul 22, 15:30 UTC1h 35m
2026-07-21 GJS3384 ALB → DCA Jul 21, 21:00 UTCJul 21, 23:20 UTC2h 20m
2026-07-21 GJS4476 RIC → EWR Jul 21, 17:15 UTCJul 21, 18:30 UTC1h 15m
2026-07-21 GJS4476 RIC → EWR Jul 21, 16:54 UTCJul 21, 18:21 UTC1h 27m
2026-07-21 GJS4459 IAD → LGA Jul 21, 14:10 UTCJul 21, 15:30 UTC1h 20m
2026-07-21 GJS4398 RIC → EWR Jul 21, 11:50 UTCJul 21, 12:45 UTC55m
2026-07-21 GJS4174 DCA → EWR Jul 21, 01:00 UTCJul 21, 01:45 UTC45m
2026-07-20 GJS4432 STL → EWR Jul 20, 22:38 UTCJul 20, 23:21 UTC43m
2026-07-20 GJS4432 STL → EWR Jul 20, 22:40 UTCJul 20, 23:25 UTC45m
2026-07-20 GJS4494 EWR → GSO Jul 20, 19:50 UTCJul 20, 20:40 UTC50m
2026-07-20 GJS4494 EWR → GSO Jul 20, 20:02 UTCJul 20, 20:36 UTC34m
2026-07-20 GJS4491 ORF → EWR Jul 20, 18:20 UTCJul 20, 19:00 UTC40m
2026-07-20 GJS4514 - Jul 20, 16:00 UTCJul 20, 17:20 UTC1h 20m
2026-07-20 GJS4509 EWR → GSO Jul 20, 01:25 UTCJul 20, 02:55 UTC1h 30m
2026-07-19 GJS4192 EWR → PHL Jul 19, 20:25 UTCJul 19, 20:50 UTC25m
2026-07-19 GJS4192 EWR → PHL Jul 19, 16:50 UTCJul 19, 18:35 UTC1h 45m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N522GJ page for operator, model, and routing details .

Mode-S A690FB frequently asked

What is Mode-S code A690FB?
A690FB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N522GJ.
Where is Mode-S A690FB registered?
Mode-S code A690FB is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A690FB broadcasting right now?
Yes. Mode-S A690FB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A690FB, octal 51510373, decimal 10,916,091.
What flights does A690FB operate?
Mode-S A690FB has broadcast 20 distinct callsigns, including GJS4188, GJS4588, GJS4390, GJS4615, GJS4587.