Apparatus

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sensors Mode-S transponder

A6D88B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N540GJ · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A6D88B
Octal
51554213
Decimal
10,934,411
Country
US
Tail
N540GJ
Type
CRJ7
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
567
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S A6D88B.

Country allocation

The ICAO 24-bit address A6D88B 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
GJS4519 GoJet Airlines 9 2026-07-25
GJS4380 GoJet Airlines 9 2026-07-25
GJS4590 GoJet Airlines 7 2026-06-25
GJS4563 GoJet Airlines 7 2026-07-26
GJS4533 GoJet Airlines 7 2026-07-21
GJS4437 GoJet Airlines 7 2026-06-11
GJS4429 - 7 2026-07-10
GJS4168 GoJet Airlines 7 2026-07-25
GJS4605 - 6 2026-07-14
GJS4567 - 6 2026-06-25
GJS4492 - 6 2026-06-24
GJS4445 - 6 2026-07-17
GJS4427 - 6 2026-06-23
GJS4423 GoJet Airlines 6 2026-07-25
GJS4191 - 6 2026-06-29
GJS4190 - 6 2026-07-09
GJS4177 GoJet Airlines 6 2026-07-18
GJS4597 - 5 2026-07-14
GJS4577 GoJet Airlines 5 2026-05-15
GJS4558 - 5 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GJS4530 ORD → SGF Jul 26, 22:05 UTCJul 26, 22:45 UTC40m
2026-07-26 GJS4542 ORD → LIT Jul 26, 19:30 UTCJul 26, 20:35 UTC1h 5m
2026-07-26 GJS4439 PHL → EWR Jul 26, 16:25 UTCJul 26, 17:35 UTC1h 10m
2026-07-26 GJS4462 EWR → GSO Jul 26, 14:00 UTCJul 26, 15:15 UTC1h 15m
2026-07-26 GJS4397 ORD → STL Jul 26, 11:51 UTCJul 26, 12:14 UTC23m
2026-07-26 GJS4397 ORD → STL Jul 26, 11:40 UTCJul 26, 12:20 UTC40m
2026-07-26 GJS4610 ITH → EWR Jul 26, 03:40 UTCJul 26, 04:15 UTC35m
2026-07-26 GJS4610 ITH → EWR Jul 26, 03:30 UTCJul 26, 04:08 UTC38m
2026-07-26 GJS4563 ORD → RIC Jul 26, 00:25 UTCJul 26, 01:25 UTC1h 0m
2026-07-26 GJS4563 ORD → RIC Jul 26, 00:10 UTCJul 26, 01:06 UTC56m
2026-07-25 GJS4519 ORD → SCE Jul 25, 22:10 UTCJul 25, 23:00 UTC50m
2026-07-25 GJS4168 DCA → EWR Jul 25, 19:05 UTCJul 25, 20:40 UTC1h 35m
2026-07-25 GJS4168 DCA → EWR Jul 25, 18:53 UTCJul 25, 20:25 UTC1h 32m
2026-07-25 GJS4380 RIC → EWR Jul 25, 16:20 UTCJul 25, 18:00 UTC1h 40m
2026-07-25 GJS4423 STL → EWR Jul 25, 12:45 UTCJul 25, 13:55 UTC1h 10m
2026-07-25 GJS4423 STL → EWR Jul 25, 12:37 UTCJul 25, 13:43 UTC1h 6m
2026-07-24 GJS4527 IAD → STL Jul 24, 22:10 UTCJul 24, 23:50 UTC1h 40m
2026-07-24 GJS4389 EWR → ILM Jul 24, 19:00 UTCJul 24, 20:25 UTC1h 25m
2026-07-24 GJS4476 RIC → EWR Jul 24, 16:45 UTCJul 24, 17:55 UTC1h 10m
2026-07-24 GJS4476 RIC → EWR Jul 24, 16:54 UTCJul 24, 17:49 UTC55m
2026-07-24 GJS4459 IAD → LGA Jul 24, 14:10 UTCJul 24, 15:25 UTC1h 15m
2026-07-24 GJS4398 RIC → EWR Jul 24, 11:55 UTCJul 24, 12:50 UTC55m
2026-07-24 GJS4174 DCA → EWR Jul 24, 00:40 UTCJul 24, 01:15 UTC35m
2026-07-23 GJS4432 STL → EWR Jul 23, 22:35 UTCJul 23, 23:15 UTC40m
2026-07-23 GJS4432 STL → EWR Jul 23, 22:38 UTCJul 23, 23:14 UTC36m
2026-07-23 GJS4494 EWR → GSO Jul 23, 19:55 UTCJul 23, 21:10 UTC1h 15m
2026-07-23 GJS4491 ORF → EWR Jul 23, 18:10 UTCJul 23, 18:45 UTC35m
2026-07-23 GJS4604 - Jul 23, 11:20 UTCJul 23, 12:00 UTC40m
2026-07-22 GJS4393 - Jul 22, 22:40 UTCJul 22, 23:05 UTC25m
2026-07-22 GJS4454 EWR → GSO Jul 22, 18:15 UTCJul 22, 19:50 UTC1h 35m
2026-07-22 GJS4613 - Jul 22, 16:30 UTCJul 22, 17:15 UTC45m
2026-07-22 GJS4438 DCA → EWR Jul 22, 13:35 UTCJul 22, 15:05 UTC1h 30m
2026-07-22 GJS4438 DCA → EWR Jul 22, 13:10 UTCJul 22, 13:30 UTC20m
2026-07-22 GJS4438 DCA → EWR Jul 22, 13:01 UTCJul 22, 14:45 UTC1h 44m
2026-07-22 GJS4187 - Jul 22, 00:30 UTCJul 22, 01:40 UTC1h 10m
2026-07-21 GJS4533 IAD → LGA Jul 21, 21:20 UTCJul 21, 21:50 UTC30m
2026-07-21 GJS4533 IAD → LGA Jul 21, 21:24 UTCJul 21, 21:33 UTC9m
2026-07-21 GJS4488 GSP → EWR Jul 21, 20:15 UTCJul 21, 20:35 UTC20m
2026-07-21 GJS4488 GSP → EWR Jul 21, 20:11 UTCJul 21, 20:38 UTC27m
2026-07-21 GJS4410 IAD → LGA Jul 21, 18:10 UTCJul 21, 18:20 UTC10m
2026-07-21 GJS4410 IAD → LGA Jul 21, 16:45 UTCJul 21, 18:20 UTC1h 35m
2026-07-21 GJS4410 IAD → LGA Jul 21, 16:25 UTCJul 21, 17:52 UTC1h 27m
2026-07-21 GJS4512 STL → EWR Jul 21, 14:05 UTCJul 21, 15:10 UTC1h 5m
2026-07-21 GJS4166 EWR → CLT Jul 21, 10:40 UTCJul 21, 12:30 UTC1h 50m
2026-07-21 GJS4166 EWR → CLT Jul 21, 10:33 UTCJul 21, 12:26 UTC1h 53m
2026-07-20 GJS4463 - Jul 20, 23:25 UTCJul 21, 00:55 UTC1h 29m
2026-07-20 GJS4533 IAD → LGA Jul 20, 21:30 UTCJul 20, 21:35 UTC5m
2026-07-20 GJS4533 IAD → LGA Jul 20, 20:55 UTCJul 20, 21:35 UTC40m
2026-07-20 GJS4533 IAD → LGA Jul 20, 21:00 UTCJul 20, 21:12 UTC12m
2026-07-20 GJS4488 GSP → EWR Jul 20, 19:35 UTCJul 20, 20:05 UTC30m

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 N540GJ page for operator, model, and routing details .

Mode-S A6D88B frequently asked

What is Mode-S code A6D88B?
A6D88B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N540GJ.
Where is Mode-S A6D88B registered?
Mode-S code A6D88B 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 A6D88B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6D88B, octal 51554213, decimal 10,934,411.
What flights does A6D88B operate?
Mode-S A6D88B has broadcast 20 distinct callsigns, including GJS4519, GJS4380, GJS4590, GJS4563, GJS4533.