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sensors Mode-S transponder

ABB5EA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N85377 · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
ABB5EA
Octal
52732752
Decimal
11,253,226
Country
US
Tail
N85377
Type
E75L
No current signal · last broadcast Jul 26, 20:50 UTC
Flights observed
645
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:50 UTC

Last known position

Most recent position reported by Mode-S ABB5EA.

Country allocation

The ICAO 24-bit address ABB5EA 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
SKW4654 - 12 2026-06-20
SKW4679 - 9 2026-07-02
SKW5665 - 8 2026-07-02
SKW5384 - 8 2026-07-10
SKW5702 SkyWest Airlines 7 2026-06-22
SKW5574 - 7 2026-07-01
SKW5573 SkyWest Airlines 6 2026-05-20
SKW5508 - 6 2026-07-14
SKW5382 SkyWest Airlines 6 2026-06-06
SKW5334 SkyWest Airlines 6 2026-04-26
SKW5290 - 6 2026-06-23
SKW4643 - 6 2026-07-10
SKW4642 - 6 2026-07-22
SKW5997 SkyWest Airlines 5 2026-06-08
SKW5732 SkyWest Airlines 5 2026-06-09
SKW5718 - 5 2026-07-10
SKW5426 - 5 2026-07-12
SKW5386 SkyWest Airlines 5 2026-06-11
SKW5362 - 5 2026-07-03
SKW4766 SkyWest Airlines 5 2026-05-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW4686 LIT → DEN Jul 26, 19:00 UTCJul 26, 20:45 UTC1h 45m
2026-07-26 SKW5369 TYS → ORD Jul 26, 15:55 UTCJul 26, 17:25 UTC1h 30m
2026-07-26 SKW5602 RNO → SFO Jul 26, 13:45 UTCJul 26, 14:05 UTC20m
2026-07-26 SKW5602 RNO → SFO Jul 26, 13:47 UTCJul 26, 14:08 UTC21m
2026-07-26 SKW778X DEN → GUC Jul 26, 01:50 UTCJul 26, 02:05 UTC15m
2026-07-25 SKW4743 ICT → ORD Jul 25, 20:40 UTCJul 25, 23:10 UTC2h 30m
2026-07-25 SKW5990 YUL → ORD Jul 25, 16:30 UTCJul 25, 18:50 UTC2h 20m
2026-07-25 SKW5990 YUL → ORD Jul 25, 16:23 UTCJul 25, 18:44 UTC2h 21m
2026-07-25 SKW5602 - Jul 25, 13:35 UTCJul 25, 14:00 UTC25m
2026-07-25 SKW776V DEN → GUC Jul 25, 02:20 UTCJul 25, 02:40 UTC20m
2026-07-24 SKW5846 ORD → SDF Jul 24, 20:40 UTCJul 24, 22:55 UTC2h 15m
2026-07-24 SKW4689 LAX → SFO Jul 24, 18:45 UTCJul 24, 19:40 UTC55m
2026-07-24 SKW6046 SFO → STL Jul 24, 15:50 UTCJul 24, 17:40 UTC1h 50m
2026-07-24 SKW6044 SFO → MRY Jul 24, 08:25 UTCJul 24, 09:40 UTC1h 15m
2026-07-24 SKW6044 SFO → MRY Jul 24, 08:04 UTCJul 24, 09:37 UTC1h 33m
2026-07-24 SKW5704 ORD → DTW Jul 24, 05:25 UTCJul 24, 06:15 UTC50m
2026-07-24 SKW5962 SJC → DEN Jul 24, 01:40 UTCJul 24, 02:25 UTC45m
2026-07-23 SKW5256 SFO → GEG Jul 23, 23:40 UTCJul 24, 00:25 UTC45m
2026-07-23 SKW5464 RDM → SFO Jul 23, 21:55 UTCJul 23, 22:45 UTC50m
2026-07-23 SKW5464 RDM → SFO Jul 23, 21:54 UTCJul 23, 22:42 UTC48m
2026-07-23 SKW5899 RNO → SFO Jul 23, 19:25 UTCJul 23, 20:25 UTC1h 0m
2026-07-23 SKW5410 - Jul 23, 16:45 UTCJul 23, 17:40 UTC55m
2026-07-23 SKW4730 - Jul 23, 13:05 UTCJul 23, 14:55 UTC1h 50m
2026-07-23 SKW5363 SYR → ORD Jul 23, 02:20 UTCJul 23, 03:50 UTC1h 30m
2026-07-22 SKW5709 RNO → SFO Jul 22, 23:35 UTCJul 23, 00:50 UTC1h 15m
2026-07-22 SKW5459 - Jul 22, 20:15 UTCJul 22, 21:30 UTC1h 15m
2026-07-22 SKW4642 - Jul 22, 15:20 UTCJul 22, 18:00 UTC2h 40m
2026-07-22 SKW418W LAX → AUS Jul 22, 02:00 UTCJul 22, 04:40 UTC2h 40m
2026-07-21 SKW5307 ASE → SFO Jul 21, 21:10 UTCJul 21, 21:55 UTC45m
2026-07-21 SKW5307 ASE → SFO Jul 21, 21:10 UTCJul 21, 21:44 UTC34m
2026-07-21 SKW5655 BUR → SFO Jul 21, 18:05 UTCJul 21, 20:05 UTC2h 0m
2026-07-21 SKW481U YWG → DEN Jul 21, 13:55 UTCJul 21, 15:50 UTC1h 55m
2026-07-21 SKW5527 SFO → TUS Jul 21, 00:35 UTCJul 21, 02:30 UTC1h 55m
2026-07-20 SKW5911 DEN → ACV Jul 20, 21:05 UTCJul 20, 22:15 UTC1h 10m
2026-07-20 SKW5388 DEN → HLN Jul 20, 17:55 UTCJul 20, 18:35 UTC40m
2026-07-20 SKW5388 DEN → HLN Jul 20, 17:54 UTCJul 20, 19:22 UTC1h 28m
2026-07-20 SKW5561 - Jul 20, 13:55 UTCJul 20, 15:50 UTC1h 55m
2026-07-20 SKW5396 BUR → SFO Jul 20, 01:15 UTCJul 20, 01:50 UTC35m
2026-07-20 SKW5396 BUR → SFO Jul 20, 01:17 UTCJul 20, 02:02 UTC45m
2026-07-19 SKW5478 ORD → GSP Jul 19, 22:45 UTCJul 19, 23:45 UTC1h 0m
2026-07-19 SKW5760 DEN → LIT Jul 19, 19:30 UTCJul 19, 21:10 UTC1h 40m
2026-07-19 SKW5348 FAR → ORD Jul 19, 15:10 UTCJul 19, 16:15 UTC1h 5m
2026-07-19 SKW5622 SFO → MSP Jul 19, 01:25 UTCJul 19, 02:30 UTC1h 5m
2026-07-19 SKW5622 SFO → MSP Jul 19, 01:31 UTCJul 19, 02:26 UTC55m
2026-07-18 SKW4658 - Jul 18, 19:40 UTCJul 18, 20:20 UTC40m
2026-07-18 SKW771M DEN → CPR Jul 18, 17:55 UTCJul 18, 18:30 UTC35m
2026-07-18 SKW5884 - Jul 18, 15:50 UTCJul 18, 16:25 UTC35m
2026-07-18 SKW5608 - Jul 18, 03:05 UTCJul 18, 03:35 UTC30m
2026-07-17 SKW5404 - Jul 17, 23:25 UTCJul 18, 01:00 UTC1h 35m
2026-07-17 SKW4693 - Jul 17, 20:04 UTCJul 17, 21:20 UTC1h 15m

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 N85377 page for operator, model, and routing details .

Mode-S ABB5EA frequently asked

What is Mode-S code ABB5EA?
ABB5EA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N85377.
Where is Mode-S ABB5EA registered?
Mode-S code ABB5EA 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 ABB5EA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABB5EA, octal 52732752, decimal 11,253,226.
What flights does ABB5EA operate?
Mode-S ABB5EA has broadcast 20 distinct callsigns, including SKW4654, SKW4679, SKW5665, SKW5384, SKW5702.