Apparatus

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sensors Mode-S transponder

ABFE12

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N872DC · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
ABFE12
Octal
52777022
Decimal
11,271,698
Country
US
Tail
N872DC
Type
CRJ7
No current signal · last broadcast 1h ago
Flights observed
574
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S ABFE12.

Country allocation

The ICAO 24-bit address ABFE12 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
SKW6386 - 14 2026-06-22
SKW6388 - 10 2026-06-25
SKW6298 - 10 2026-07-04
SKW6223 - 9 2026-06-17
SKW6455 - 8 2026-07-10
SKW6233 - 8 2026-07-10
SKW6385 - 7 2026-07-07
SKW6222 - 7 2026-06-17
SKW6474 - 6 2026-07-12
SKW6450 SkyWest Airlines 6 2026-06-10
SKW6446 SkyWest Airlines 6 2026-05-05
SKW6445 SkyWest Airlines 6 2026-06-06
SKW6436 - 6 2026-07-07
SKW6363 SkyWest Airlines 6 2026-06-02
SKW6340 SkyWest Airlines 6 2026-04-24
SKW6236 SkyWest Airlines 6 2026-06-01
SKW6235 - 6 2026-07-11
SKW6229 - 6 2026-06-22
SKW4897 - 6 2026-06-19
SKW4828 SkyWest Airlines 6 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SKW6218 - Jul 14, 00:15 UTCJul 14, 02:00 UTC1h 45m
2026-07-13 SKW6218 - Jul 13, 21:15 UTCJul 13, 23:05 UTC1h 50m
2026-07-13 SKW6352 STL → ORD Jul 13, 18:34 UTCJul 13, 19:14 UTC40m
2026-07-13 SKW6352 STL → ORD Jul 13, 18:25 UTCJul 13, 19:15 UTC50m
2026-07-13 SKW6352 - Jul 13, 16:35 UTCJul 13, 17:25 UTC50m
2026-07-13 SKW6263 - Jul 13, 14:00 UTCJul 13, 14:25 UTC25m
2026-07-13 SKW6263 MKE → ORD Jul 13, 13:53 UTCJul 13, 14:11 UTC18m
2026-07-13 SKW6263 - Jul 13, 12:25 UTCJul 13, 12:45 UTC20m
2026-07-13 SKW4976 - Jul 13, 09:50 UTCJul 13, 10:50 UTC1h 0m
2026-07-13 SKW4976 LEX → ORD Jul 13, 09:46 UTCJul 13, 10:43 UTC57m
2026-07-13 SKW6498 - Jul 13, 03:15 UTCJul 13, 04:05 UTC50m
2026-07-13 SKW6498 ORD → LEX Jul 13, 03:14 UTCJul 13, 04:01 UTC47m
2026-07-13 SKW4973 - Jul 13, 00:20 UTCJul 13, 01:20 UTC1h 0m
2026-07-13 SKW4973 DSM → ORD Jul 13, 00:20 UTCJul 13, 01:00 UTC40m
2026-07-12 SKW4973 ORD → DSM Jul 12, 22:35 UTCJul 12, 23:20 UTC45m
2026-07-12 SKW6283 - Jul 12, 19:01 UTCJul 12, 20:30 UTC1h 30m
2026-07-12 SKW6283 ICT → ORD Jul 12, 19:05 UTCJul 12, 20:09 UTC1h 4m
2026-07-12 SKW6226 PHX → ICT Jul 12, 16:10 UTCJul 12, 18:09 UTC1h 59m
2026-07-12 SKW6226 PHX → ICT Jul 12, 16:10 UTCJul 12, 18:10 UTC2h 0m
2026-07-12 SKW6441 - Jul 12, 14:35 UTCJul 12, 15:01 UTC25m
2026-07-12 SKW6474 - Jul 12, 02:25 UTCJul 12, 02:45 UTC20m
2026-07-12 SKW6474 PHX → FLG Jul 12, 02:24 UTCJul 12, 02:49 UTC25m
2026-07-11 SKW6235 BFL → PHX Jul 11, 23:50 UTCJul 12, 01:05 UTC1h 15m
2026-07-11 SKW6235 BFL → PHX Jul 11, 23:41 UTCJul 12, 00:58 UTC1h 17m
2026-07-11 SKW6235 PHX → BFL Jul 11, 21:50 UTCJul 11, 22:50 UTC1h 0m
2026-07-11 SKW4993 - Jul 11, 19:30 UTCJul 11, 20:40 UTC1h 10m
2026-07-11 SKW4993 SBA → PHX Jul 11, 19:25 UTCJul 11, 20:37 UTC1h 12m
2026-07-11 SKW4993 - Jul 11, 17:30 UTCJul 11, 18:35 UTC1h 5m
2026-07-11 SKW6441 - Jul 11, 14:05 UTCJul 11, 14:35 UTC30m
2026-07-11 SKW6441 FLG → PHX Jul 11, 14:01 UTCJul 11, 14:30 UTC29m
2026-07-11 SKW6474 PHX → FLG Jul 11, 02:27 UTCJul 11, 02:44 UTC17m
2026-07-11 SKW6474 PHX → SDX Jul 11, 02:25 UTCJul 11, 02:45 UTC20m
2026-07-10 SKW6455 - Jul 10, 23:15 UTCJul 11, 00:10 UTC55m
2026-07-10 SKW6455 TIJ → PHX Jul 10, 23:13 UTCJul 11, 00:17 UTC1h 4m
2026-07-10 SKW6455 - Jul 10, 21:15 UTCJul 10, 22:00 UTC45m
2026-07-10 SKW6383 - Jul 10, 19:00 UTCJul 10, 19:30 UTC30m
2026-07-10 SKW6383 YUM → PHX Jul 10, 18:51 UTCJul 10, 19:26 UTC35m
2026-07-10 SKW6383 - Jul 10, 17:35 UTCJul 10, 18:00 UTC25m
2026-07-10 SKW6392 OKC → PHX Jul 10, 14:25 UTCJul 10, 16:20 UTC1h 55m
2026-07-10 SKW6206 DFW → OKC Jul 10, 12:40 UTCJul 10, 13:20 UTC40m
2026-07-10 SKW6206 DFW → OKC Jul 10, 12:36 UTCJul 10, 13:16 UTC40m
2026-07-10 SKW6233 - Jul 10, 02:15 UTCJul 10, 04:10 UTC1h 55m
2026-07-10 SKW6233 SBN → DFW Jul 10, 02:11 UTCJul 10, 04:10 UTC1h 59m
2026-07-09 SKW6233 - Jul 9, 21:20 UTCJul 9, 23:20 UTC2h 0m
2026-07-09 SKW4984 - Jul 9, 17:40 UTCJul 9, 19:00 UTC1h 20m
2026-07-09 SKW4984 EVV → DFW Jul 9, 17:32 UTCJul 9, 18:59 UTC1h 27m
2026-07-09 SKW4984 - Jul 9, 15:10 UTCJul 9, 16:35 UTC1h 25m
2026-07-09 SKW6408 - Jul 9, 11:55 UTCJul 9, 13:15 UTC1h 20m
2026-07-09 SKW6408 COS → DFW Jul 9, 11:46 UTCJul 9, 13:08 UTC1h 22m
2026-07-08 SKW6267 - Jul 8, 22:50 UTCJul 9, 00:20 UTC1h 30m

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 N872DC page for operator, model, and routing details .

Mode-S ABFE12 frequently asked

What is Mode-S code ABFE12?
ABFE12 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N872DC.
Where is Mode-S ABFE12 registered?
Mode-S code ABFE12 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 ABFE12 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABFE12, octal 52777022, decimal 11,271,698.
What flights does ABFE12 operate?
Mode-S ABFE12 has broadcast 20 distinct callsigns, including SKW6386, SKW6388, SKW6298, SKW6223, SKW6455.