Apparatus

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sensors Mode-S transponder

A828E1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N625AS · BOEING 737-700 · operated by ALASKA AIRLINES INC

Hex
A828E1
Octal
52024341
Decimal
11,020,513
Country
US
Tail
N625AS
Type
B737
No current signal · last broadcast 12d ago
Flights observed
481
Distinct callsigns
20
Country
US
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S A828E1.

Country allocation

The ICAO 24-bit address A828E1 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
ASA7005 - 72 2026-06-28
ASA7004 - 68 2026-06-29
ASA7006 - 42 2026-06-26
ASA7010 - 34 2026-06-27
ASA7011 - 33 2026-06-30
ASA7019 - 31 2026-07-01
ASA7096 - 29 2026-07-01
ASA7026 - 22 2026-06-29
ASA7097 - 21 2026-06-29
ASA7015 Alaska Airlines 20 2026-06-27
ASA7025 - 19 2026-06-29
ASA7001 Alaska Airlines 17 2026-06-22
ASA7008 Alaska Airlines 11 2026-06-05
ASA9620 Alaska Airlines 9 2026-06-25
ASA7009 Alaska Airlines 8 2026-06-14
ASA7098 Alaska Airlines 6 2026-06-16
ASA7049 Alaska Airlines 5 2026-04-28
ASA7050 Alaska Airlines 4 2026-04-28
ASA7007 - 3 2026-06-28
7019 - 3 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-01 ASA9423 SEA → OKC Jul 1, 17:55 UTCJul 1, 21:05 UTC3h 10m
2026-07-01 ASA7096 - Jul 1, 07:50 UTCJul 1, 09:40 UTC1h 50m
2026-07-01 ASA7096 - Jul 1, 05:30 UTCJul 1, 06:40 UTC1h 10m
2026-07-01 ASA7019 - Jul 1, 02:50 UTCJul 1, 03:30 UTC40m
2026-07-01 7019 - Jul 1, 01:50 UTCJul 1, 02:05 UTC15m
2026-07-01 ASA7019 AKN → ANC Jul 1, 01:45 UTCJul 1, 02:22 UTC37m
2026-07-01 ASA7019 - Jul 1, 00:00 UTCJul 1, 00:50 UTC50m
2026-06-30 ASA7011 - Jun 30, 18:50 UTCJun 30, 22:15 UTC3h 25m
2026-06-29 ASA7026 OTZ → ANC Jun 29, 22:15 UTCJun 29, 23:25 UTC1h 10m
2026-06-29 ASA7025 - Jun 29, 20:15 UTCJun 29, 21:24 UTC1h 10m
2026-06-29 ASA7097 - Jun 29, 07:15 UTCJun 29, 10:20 UTC3h 5m
2026-06-29 ASA7004 - Jun 29, 03:25 UTCJun 29, 05:20 UTC1h 55m
2026-06-29 ASA7004 - Jun 29, 02:20 UTCJun 29, 02:35 UTC15m
2026-06-29 ASA7004 SIT → JNU Jun 29, 02:13 UTCJun 29, 02:38 UTC25m
2026-06-29 ASA7004 - Jun 29, 00:34 UTCJun 29, 00:54 UTC20m
2026-06-28 ASA7004 - Jun 28, 21:59 UTCJun 28, 23:20 UTC1h 20m
2026-06-28 ASA7005 - Jun 28, 18:14 UTCJun 28, 19:55 UTC1h 40m
2026-06-28 ASA7005 - Jun 28, 16:45 UTCJun 28, 17:00 UTC15m
2026-06-28 ASA7005 - Jun 28, 14:39 UTCJun 28, 14:59 UTC20m
2026-06-28 ASA7005 - Jun 28, 12:50 UTCJun 28, 13:55 UTC1h 5m
2026-06-28 ASA9623 - Jun 28, 03:59 UTCJun 28, 04:25 UTC25m
2026-06-28 ASA9623 CDV → ANC Jun 28, 03:51 UTCJun 28, 05:13 UTC1h 22m
2026-06-28 ASA9621 ANC → BRW Jun 28, 02:44 UTCJun 28, 03:14 UTC30m
2026-06-28 ASA9621 ANC → BRW Jun 28, 02:41 UTCJun 28, 03:44 UTC1h 3m
2026-06-28 ASA7007 - Jun 28, 00:39 UTCJun 28, 01:55 UTC1h 15m
2026-06-28 ASA7007 OME → ANC Jun 28, 00:43 UTCJun 28, 01:57 UTC1h 14m
2026-06-27 ASA7007 - Jun 27, 21:19 UTCJun 27, 22:20 UTC1h 0m
2026-06-27 ASA7015 ANC → BRW Jun 27, 18:16 UTCJun 27, 19:54 UTC1h 38m
2026-06-27 ASA7015 ANC → BRW Jun 27, 15:49 UTCJun 27, 16:55 UTC1h 5m
2026-06-27 ASA7012 - Jun 27, 03:55 UTCJun 27, 04:49 UTC55m
2026-06-27 7012 - Jun 27, 01:39 UTCJun 27, 02:09 UTC30m
2026-06-27 ASA7010 ANC → BET Jun 27, 00:07 UTCJun 27, 00:40 UTC33m
2026-06-26 ASA7010 - Jun 26, 23:44 UTCJun 26, 23:49 UTC5m
2026-06-26 ASA7006 - Jun 26, 19:50 UTCJun 26, 20:59 UTC1h 10m
2026-06-26 ASA7006 - Jun 26, 16:14 UTCJun 26, 18:09 UTC1h 55m
2026-06-26 ASA7096 - Jun 26, 08:15 UTCJun 26, 10:10 UTC1h 55m
2026-06-26 ASA7096 - Jun 26, 06:09 UTCJun 26, 07:20 UTC1h 10m
2026-06-26 ASA7096 ANC → JNU Jun 26, 06:05 UTCJun 26, 07:31 UTC1h 26m
2026-06-26 ASA7026 - Jun 26, 03:50 UTCJun 26, 05:05 UTC1h 15m
2026-06-26 ASA7025 ANC → OTZ Jun 26, 01:10 UTCJun 26, 02:20 UTC1h 10m
2026-06-25 ASA7015 ANC → BRW Jun 25, 21:20 UTCJun 25, 22:39 UTC1h 20m
2026-06-25 ASA7015 ANC → BRW Jun 25, 20:59 UTCJun 25, 22:32 UTC1h 33m
2026-06-25 ASA7015 ANC → BRW Jun 25, 15:04 UTCJun 25, 16:14 UTC1h 10m
2026-06-25 ASA7015 ANC → BRW Jun 25, 15:12 UTCJun 25, 16:40 UTC1h 28m
2026-06-25 ASA9620 ANC → OTZ Jun 25, 01:54 UTCJun 25, 02:39 UTC45m
2026-06-25 ASA9620 ANC → OTZ Jun 25, 02:07 UTCJun 25, 02:42 UTC35m
2026-06-25 9562 - Jun 25, 00:14 UTCJun 25, 00:59 UTC45m
2026-06-24 ASA7011 - Jun 24, 19:55 UTCJun 24, 21:09 UTC1h 15m
2026-06-24 ASA7011 - Jun 24, 17:25 UTCJun 24, 18:20 UTC55m
2026-06-24 ASA7097 - Jun 24, 11:05 UTCJun 24, 14:09 UTC3h 5m

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 N625AS page for operator, model, and routing details .

Mode-S A828E1 frequently asked

What is Mode-S code A828E1?
A828E1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N625AS.
Where is Mode-S A828E1 registered?
Mode-S code A828E1 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 A828E1 broadcasting right now?
No active broadcast right now. Last signal was 12d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A828E1, octal 52024341, decimal 11,020,513.
What flights does A828E1 operate?
Mode-S A828E1 has broadcast 20 distinct callsigns, including ASA7005, ASA7004, ASA7006, ASA7010, ASA7011.