Apparatus

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sensors Mode-S transponder

AD2EA1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N949AK · BOEING 737 MAX 9 · operated by BANK OF UTAH TRUSTEE

Hex
AD2EA1
Octal
53227241
Decimal
11,349,665
Country
US
Tail
N949AK
Type
B39M
Broadcasting now · callsign ASA626 · 7,950 ft
Flights observed
416
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:05 UTC

Current position

AD2EA1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD2EA1 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
ASA405 Alaska Airlines 6 2026-07-23
ASA625 Alaska Airlines 5 2026-07-17
ASA62 Alaska Airlines 5 2026-07-07
ASA560 Alaska Airlines 5 2026-06-03
ASA205 Alaska Airlines 5 2026-06-10
ASA1495 Alaska Airlines 5 2026-06-09
ASA94 Alaska Airlines 4 2026-05-07
ASA66 Alaska Airlines 4 2026-05-24
ASA618 Alaska Airlines 4 2026-06-08
ASA517 - 4 2026-07-16
ASA493 - 4 2026-07-18
ASA49 - 4 2026-07-07
ASA354 Alaska Airlines 4 2026-05-08
ASA304 Alaska Airlines 4 2026-06-23
ASA287 Alaska Airlines 4 2026-06-26
ASA252 - 4 2026-07-13
ASA19 Alaska Airlines 4 2026-05-06
ASA9230 Alaska Airlines 3 2026-06-24
ASA763 - 3 2026-07-15
ASA612 Alaska Airlines 3 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA9420 SEA → GSO Jul 26, 16:25 UTCJul 26, 20:05 UTC3h 40m
2026-07-25 ASA419 SFO → LAS Jul 25, 21:20 UTCJul 26, 02:45 UTC5h 25m
2026-07-25 ASA300 SAN → LIH Jul 25, 14:25 UTCJul 25, 19:25 UTC5h 0m
2026-07-25 ASA498 SAN → PDX Jul 25, 05:10 UTCJul 25, 05:40 UTC30m
2026-07-25 ASA575 DFW → SEA Jul 25, 00:50 UTCJul 25, 02:50 UTC2h 0m
2026-07-24 ASA571 MCO → SAN Jul 24, 21:20 UTCJul 24, 23:40 UTC2h 20m
2026-07-24 ASA1477 SFO → SEA Jul 24, 17:25 UTCJul 24, 19:40 UTC2h 15m
2026-07-24 ASA1361 SFO → PVR Jul 24, 13:35 UTCJul 24, 16:00 UTC2h 25m
2026-07-24 ASA614 SEA → SLC Jul 24, 03:40 UTCJul 24, 05:45 UTC2h 5m
2026-07-23 ASA1300 SJC → SEA Jul 23, 23:50 UTCJul 24, 02:10 UTC2h 20m
2026-07-23 ASA415 LAX → SEA Jul 23, 18:30 UTCJul 23, 22:10 UTC3h 40m
2026-07-23 ASA414 SFO → LAS Jul 23, 13:25 UTCJul 23, 16:40 UTC3h 15m
2026-07-23 ASA1509 SEA → BUR Jul 23, 08:45 UTCJul 23, 11:45 UTC3h 0m
2026-07-23 ASA284 LAX → EWR Jul 23, 01:50 UTCJul 23, 05:10 UTC3h 20m
2026-07-23 ASA405 SEA → OKC Jul 23, 00:00 UTCJul 23, 00:05 UTC5m
2026-07-22 ASA405 SEA → OKC Jul 22, 20:41 UTCJul 22, 23:44 UTC3h 3m
2026-07-22 ASA405 SEA → OKC Jul 22, 20:45 UTCJul 23, 00:05 UTC3h 20m
2026-07-22 ASA405 SEA → OKC Jul 22, 15:35 UTCJul 22, 18:40 UTC3h 5m
2026-07-22 ASA1681 LAS → SEA Jul 22, 01:55 UTCJul 22, 03:50 UTC1h 55m
2026-07-22 ASA1681 LAS → SEA Jul 22, 01:53 UTCJul 22, 03:42 UTC1h 49m
2026-07-21 ASA600 PDX → SFO Jul 21, 22:46 UTCJul 22, 00:34 UTC1h 48m
2026-07-21 ASA600 PDX → SFO Jul 21, 22:30 UTCJul 22, 00:45 UTC2h 15m
2026-07-21 ASA785 LAS → SEA Jul 21, 18:35 UTCJul 21, 20:35 UTC2h 0m
2026-07-21 ASA785 LAS → SEA Jul 21, 18:34 UTCJul 21, 20:29 UTC1h 55m
2026-07-21 ASA612 SEA → LAS Jul 21, 15:16 UTCJul 21, 17:06 UTC1h 50m
2026-07-21 ASA612 SEA → LAS Jul 21, 15:00 UTCJul 21, 17:10 UTC2h 10m
2026-07-21 ASA244 OGG → SEA Jul 21, 05:50 UTCJul 21, 06:40 UTC50m
2026-07-20 ASA254 - Jul 20, 18:35 UTCJul 20, 19:15 UTC40m
2026-07-20 ASA708 HNL → SFO Jul 20, 11:50 UTCJul 20, 16:05 UTC4h 15m
2026-07-20 ASA394 SJC → PDX Jul 20, 05:05 UTCJul 20, 09:50 UTC4h 45m
2026-07-20 ASA758 SFO → SEA Jul 20, 00:50 UTCJul 20, 02:20 UTC1h 30m
2026-07-19 ASA236 SFO → LAS Jul 19, 22:05 UTCJul 19, 23:35 UTC1h 30m
2026-07-19 ASA684 DEN → PDX Jul 19, 18:28 UTCJul 19, 20:26 UTC1h 58m
2026-07-19 ASA684 DEN → PDX Jul 19, 18:10 UTCJul 19, 20:25 UTC2h 15m
2026-07-19 ASA401 DAL → SFO Jul 19, 14:35 UTCJul 19, 16:40 UTC2h 5m
2026-07-18 ASA18 PDX → PDX Jul 18, 19:00 UTCJul 18, 22:40 UTC3h 40m
2026-07-18 ASA413 - Jul 18, 13:30 UTCJul 18, 17:10 UTC3h 40m
2026-07-18 ASA328 - Jul 18, 08:20 UTCJul 18, 11:40 UTC3h 20m
2026-07-18 ASA493 DEN → SEA Jul 18, 04:40 UTCJul 18, 06:55 UTC2h 15m
2026-07-18 ASA493 DEN → SEA Jul 18, 04:37 UTCJul 18, 06:41 UTC2h 4m
2026-07-18 ASA602 SEA → DEN Jul 18, 00:19 UTCJul 18, 02:45 UTC2h 25m
2026-07-17 ASA446 PHL → SEA Jul 17, 20:50 UTCJul 17, 22:45 UTC1h 55m
2026-07-17 ASA208 - Jul 17, 17:24 UTCJul 17, 19:10 UTC1h 46m
2026-07-17 ASA208 - Jul 17, 17:09 UTCJul 17, 19:05 UTC1h 55m
2026-07-17 ASA625 PHX → SEA Jul 17, 11:35 UTCJul 17, 15:35 UTC4h 0m
2026-07-17 ASA624 SEA → IND Jul 17, 06:29 UTCJul 17, 10:00 UTC3h 30m
2026-07-16 ASA517 - Jul 16, 23:20 UTCJul 17, 04:54 UTC5h 35m
2026-07-16 ASA516 SEA → FLL Jul 16, 16:19 UTCJul 16, 21:40 UTC5h 20m
2026-07-16 ASA1436 SJC → SEA Jul 16, 04:50 UTCJul 16, 06:15 UTC1h 25m
2026-07-16 ASA1411 - Jul 16, 02:45 UTCJul 16, 03:25 UTC40m

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 N949AK page for operator, model, and routing details .

Mode-S AD2EA1 frequently asked

What is Mode-S code AD2EA1?
AD2EA1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N949AK.
Where is Mode-S AD2EA1 registered?
Mode-S code AD2EA1 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 AD2EA1 broadcasting right now?
Yes. Mode-S AD2EA1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD2EA1, octal 53227241, decimal 11,349,665.
What flights does AD2EA1 operate?
Mode-S AD2EA1 has broadcast 20 distinct callsigns, including ASA405, ASA625, ASA62, ASA560, ASA205.