Apparatus

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sensors Mode-S transponder

ABB5C9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N85369 · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
ABB5C9
Octal
52732711
Decimal
11,253,193
Country
US
Tail
N85369
Type
E75L
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
576
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S ABB5C9.

Country allocation

The ICAO 24-bit address ABB5C9 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
SKW5460 - 9 2026-07-13
SKW5415 - 8 2026-07-02
SKW4715 - 8 2026-07-13
SKW6052 SkyWest Airlines 7 2026-07-22
SKW5705 SkyWest Airlines 7 2026-07-22
SKW5422 - 7 2026-07-15
SKW5313 SkyWest Airlines 7 2026-07-24
SKW5604 SkyWest Airlines 6 2026-07-24
SKW5459 - 6 2026-07-13
SKW5417 - 6 2026-07-15
SKW4796 - 6 2026-06-15
SKW6021 SkyWest Airlines 5 2026-06-24
SKW6015 - 5 2026-07-13
SKW5797 SkyWest Airlines 5 2026-07-26
SKW5728 - 5 2026-06-29
SKW5526 - 5 2026-06-24
SKW5523 SkyWest Airlines 5 2026-07-26
SKW5515 SkyWest Airlines 5 2026-07-23
SKW5510 - 5 2026-07-22
SKW5484 - 5 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5523 ORD → MSN Jul 26, 21:55 UTCJul 26, 22:15 UTC20m
2026-07-26 SKW5438 DEN → MRY Jul 26, 18:30 UTCJul 26, 20:35 UTC2h 5m
2026-07-26 SKW5857 BZN → ORD Jul 26, 14:22 UTCJul 26, 15:53 UTC1h 31m
2026-07-26 SKW5797 MCI → ORD Jul 26, 00:11 UTCJul 26, 01:35 UTC1h 24m
2026-07-26 SKW5797 MCI → ORD Jul 26, 00:05 UTCJul 26, 01:35 UTC1h 30m
2026-07-25 SKW5673 ORD → MEM Jul 25, 21:55 UTCJul 25, 22:30 UTC35m
2026-07-25 SKW5673 ORD → MEM Jul 25, 21:38 UTCJul 25, 22:23 UTC45m
2026-07-25 SKW5616 ATL → ORD Jul 25, 19:45 UTCJul 25, 20:15 UTC30m
2026-07-25 SKW5718 PSP → SFO Jul 25, 17:15 UTCJul 25, 18:20 UTC1h 5m
2026-07-25 SKW5218 ABQ → SFO Jul 25, 14:25 UTCJul 25, 15:35 UTC1h 10m
2026-07-25 SKW5895 SGF → DEN Jul 25, 11:00 UTCJul 25, 12:30 UTC1h 30m
2026-07-25 SKW5895 SGF → DEN Jul 25, 11:15 UTCJul 25, 12:29 UTC1h 14m
2026-07-25 SKW5687 OKC → IAH Jul 25, 03:25 UTCJul 25, 04:45 UTC1h 20m
2026-07-25 SKW5687 OKC → IAH Jul 25, 03:23 UTCJul 25, 04:46 UTC1h 23m
2026-07-25 SKW5418 SAV → ORD Jul 25, 00:00 UTCJul 25, 01:05 UTC1h 5m
2026-07-25 SKW5418 SAV → ORD Jul 25, 00:01 UTCJul 25, 01:08 UTC1h 7m
2026-07-24 SKW4782 MSN → ORD Jul 24, 22:05 UTCJul 24, 23:05 UTC1h 0m
2026-07-24 SKW4720 MSN → ORD Jul 24, 19:25 UTCJul 24, 20:25 UTC1h 0m
2026-07-24 SKW5605 MRY → SFO Jul 24, 16:20 UTCJul 24, 17:45 UTC1h 25m
2026-07-24 SKW5313 ACV → SFO Jul 24, 13:10 UTCJul 24, 13:50 UTC40m
2026-07-24 SKW5313 ACV → SFO Jul 24, 13:16 UTCJul 24, 13:44 UTC28m
2026-07-24 SKW5626 SFO → BUR Jul 24, 04:50 UTCJul 24, 05:20 UTC30m
2026-07-24 SKW4662 ABE → ORD Jul 24, 02:40 UTCJul 24, 04:00 UTC1h 20m
2026-07-24 SKW4662 ABE → ORD Jul 24, 02:34 UTCJul 24, 03:56 UTC1h 22m
2026-07-24 SKW5604 ABQ → SFO Jul 24, 00:20 UTCJul 24, 01:25 UTC1h 5m
2026-07-24 SKW5604 ABQ → SFO Jul 24, 00:18 UTCJul 24, 01:24 UTC1h 6m
2026-07-23 SKW5599 MKE → IAH Jul 23, 22:15 UTCJul 23, 23:20 UTC1h 5m
2026-07-23 SKW5507 GSO → DEN Jul 23, 18:20 UTCJul 23, 20:20 UTC2h 0m
2026-07-23 SKW5857 BZN → ORD Jul 23, 15:40 UTCJul 23, 17:10 UTC1h 30m
2026-07-23 SKW5797 MCI → ORD Jul 23, 02:45 UTCJul 23, 04:00 UTC1h 15m
2026-07-23 SKW5515 GSP → DEN Jul 23, 00:55 UTCJul 23, 01:25 UTC30m
2026-07-22 SKW5515 GSP → DEN Jul 22, 19:50 UTCJul 22, 22:10 UTC2h 20m
2026-07-22 SKW5510 SFO → CLD Jul 22, 16:26 UTCJul 22, 17:30 UTC1h 4m
2026-07-22 SKW5510 SFO → CLD Jul 22, 16:25 UTCJul 22, 17:35 UTC1h 10m
2026-07-22 SKW6052 ORD → IND Jul 22, 13:55 UTCJul 22, 14:55 UTC1h 0m
2026-07-22 SKW5705 SFO → PSP Jul 22, 02:01 UTCJul 22, 03:00 UTC59m
2026-07-22 SKW5705 SFO → PSP Jul 22, 01:55 UTCJul 22, 03:00 UTC1h 5m
2026-07-21 SKW5217 SFO → TUS Jul 21, 19:55 UTCJul 21, 21:55 UTC2h 0m
2026-07-21 SKW5612 - Jul 21, 15:05 UTCJul 21, 18:15 UTC3h 10m
2026-07-21 SKW5612 ORD → GEG Jul 21, 15:06 UTCJul 21, 18:49 UTC3h 43m
2026-07-21 SKW5820 MAF → DEN Jul 21, 11:25 UTCJul 21, 12:45 UTC1h 20m
2026-07-21 SKW5763 ORD → TUL Jul 21, 00:35 UTCJul 21, 01:40 UTC1h 5m
2026-07-20 SKW5386 ORD → ORD Jul 20, 20:05 UTCJul 20, 20:15 UTC10m
2026-07-20 SKW5386 - Jul 20, 17:05 UTCJul 20, 20:15 UTC3h 10m
2026-07-20 SKW5386 BOI → ORD Jul 20, 17:09 UTCJul 20, 19:48 UTC2h 39m
2026-07-20 SKW5923 DEN → BOI Jul 20, 02:55 UTCJul 20, 04:15 UTC1h 20m
2026-07-20 SKW5923 DEN → BOI Jul 20, 02:54 UTCJul 20, 04:26 UTC1h 32m
2026-07-19 SKW4768 LGA → ORD Jul 19, 22:00 UTCJul 19, 23:15 UTC1h 15m
2026-07-19 SKW5808 DEN → OKC Jul 19, 19:45 UTCJul 19, 21:05 UTC1h 20m
2026-07-19 SKW481U YWG → DEN Jul 19, 14:00 UTCJul 19, 15:45 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 N85369 page for operator, model, and routing details .

Mode-S ABB5C9 frequently asked

What is Mode-S code ABB5C9?
ABB5C9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N85369.
Where is Mode-S ABB5C9 registered?
Mode-S code ABB5C9 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 ABB5C9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABB5C9, octal 52732711, decimal 11,253,193.
What flights does ABB5C9 operate?
Mode-S ABB5C9 has broadcast 20 distinct callsigns, including SKW5460, SKW5415, SKW4715, SKW6052, SKW5705.