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sensors Mode-S transponder

AB9276

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N845AK · operated by ALASKA AIRLINES

Hex
AB9276
Octal
52711166
Decimal
11,244,150
Country
US
Tail
N845AK
Broadcasting now · callsign ASA631 · 39,000 ft
Flights observed
216
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Current position

AB9276 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AB9276 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
ASA355 Alaska Airlines 15 2026-07-24
ASA354 Alaska Airlines 12 2026-07-24
ASA1535 Alaska Airlines 8 2026-07-19
ASA740 - 6 2026-07-14
ASA703 - 6 2026-07-09
ASA312 Alaska Airlines 6 2026-07-20
ASA1605 - 6 2026-07-14
BOE123 - 5 2026-05-06
ASA555 - 5 2026-06-29
ASA248 - 5 2026-07-14
ASA1606 - 5 2026-07-14
BOE868 - 4 2026-05-27
ASA331 - 4 2026-07-08
ASA305 - 4 2026-07-09
ASA1551 Alaska Airlines 4 2026-07-24
ASA99 Alaska Airlines 3 2026-07-21
ASA454 Alaska Airlines 3 2026-07-25
ASA210 - 3 2026-07-01
ASA1536 Alaska Airlines 3 2026-07-18
ASA9803 Alaska Airlines 2 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA742 SEA → SFO Jul 26, 21:15 UTCJul 26, 21:30 UTC15m
2026-07-26 ASA593 ANC → PDX Jul 26, 17:10 UTCJul 26, 19:40 UTC2h 30m
2026-07-26 ASA409 ORD → SEA Jul 26, 10:15 UTCJul 26, 15:25 UTC5h 10m
2026-07-26 ASA409 ORD → SEA Jul 26, 10:11 UTCJul 26, 15:17 UTC5h 6m
2026-07-25 ASA406 IAD → SEA Jul 25, 23:20 UTCJul 26, 03:25 UTC4h 5m
2026-07-25 ASA603 SAN → PDX Jul 25, 18:35 UTCJul 25, 21:00 UTC2h 25m
2026-07-25 ASA606 SEA → PHX Jul 25, 14:25 UTCJul 25, 16:55 UTC2h 30m
2026-07-25 ASA454 RSW → SEA Jul 25, 02:15 UTCJul 25, 04:25 UTC2h 10m
2026-07-24 ASA1551 SEA → SNA Jul 24, 22:53 UTCJul 25, 00:58 UTC2h 5m
2026-07-24 ASA1551 SEA → SNA Jul 24, 22:35 UTCJul 25, 01:05 UTC2h 30m
2026-07-24 ASA355 FLL → SAN Jul 24, 15:25 UTCJul 24, 20:20 UTC4h 55m
2026-07-24 ASA355 FLL → SAN Jul 24, 13:10 UTCJul 24, 13:30 UTC20m
2026-07-24 ASA354 LAS → SFO Jul 24, 02:10 UTCJul 24, 08:55 UTC6h 45m
2026-07-23 ASA465 LAX → SJD Jul 23, 21:40 UTCJul 24, 00:00 UTC2h 20m
2026-07-23 ASA1618 SAN → DEN Jul 23, 18:20 UTCJul 23, 20:15 UTC1h 55m
2026-07-23 ASA1618 SAN → DEN Jul 23, 14:20 UTCJul 23, 16:10 UTC1h 50m
2026-07-23 ASA635 SAN → SMF Jul 23, 04:15 UTCJul 23, 06:45 UTC2h 30m
2026-07-23 ASA214 IAD → LAX Jul 23, 00:15 UTCJul 23, 01:50 UTC1h 35m
2026-07-22 ASA92 ANC → SEA Jul 22, 21:35 UTCJul 22, 22:50 UTC1h 15m
2026-07-22 ASA275 LAX → SEA Jul 22, 16:10 UTCJul 22, 19:20 UTC3h 10m
2026-07-22 ASA1612 ANC → FAI Jul 22, 04:50 UTCJul 22, 05:25 UTC35m
2026-07-22 ASA1612 ANC → FAI Jul 22, 04:45 UTCJul 22, 05:24 UTC39m
2026-07-21 ASA99 SEA → ANC Jul 21, 23:50 UTCJul 22, 03:10 UTC3h 20m
2026-07-21 ASA355 - Jul 21, 16:45 UTCJul 21, 20:35 UTC3h 50m
2026-07-21 ASA355 - Jul 21, 13:10 UTCJul 21, 13:25 UTC15m
2026-07-21 ASA354 LAS → SFO Jul 21, 02:03 UTCJul 21, 09:08 UTC7h 5m
2026-07-21 ASA354 LAS → SFO Jul 21, 02:15 UTCJul 21, 03:25 UTC1h 10m
2026-07-20 ASA312 SEA → OMA Jul 20, 20:25 UTCJul 20, 23:30 UTC3h 5m
2026-07-20 ASA312 SEA → OMA Jul 20, 16:20 UTCJul 20, 18:55 UTC2h 35m
2026-07-20 ASA671 SEA → SFO Jul 20, 04:30 UTCJul 20, 06:35 UTC2h 5m
2026-07-20 ASA472 - Jul 20, 01:00 UTCJul 20, 03:25 UTC2h 25m
2026-07-19 ASA21 JFK → SEA Jul 19, 18:01 UTCJul 19, 23:06 UTC5h 5m
2026-07-19 ASA21 JFK → SEA Jul 19, 17:40 UTCJul 19, 23:25 UTC5h 45m
2026-07-19 ASA1535 SEA → PSP Jul 19, 07:35 UTCJul 19, 14:00 UTC6h 25m
2026-07-18 ASA1536 SEA → BZN Jul 18, 21:30 UTCJul 19, 05:20 UTC7h 50m
2026-07-18 ASA1535 SEA → PSP Jul 18, 10:40 UTCJul 18, 11:00 UTC20m
2026-07-18 ASA1535 SEA → PSP Jul 18, 04:20 UTCJul 18, 11:00 UTC6h 40m
2026-07-18 ASA1535 SEA → PSP Jul 18, 04:21 UTCJul 18, 10:23 UTC6h 2m
2026-07-17 ASA99 SEA → ANC Jul 17, 23:20 UTCJul 18, 02:25 UTC3h 5m
2026-07-17 ASA664 LAS → SEA Jul 17, 19:30 UTCJul 17, 21:05 UTC1h 35m
2026-07-17 ASA360 SEA → SLC Jul 17, 16:04 UTCJul 17, 17:40 UTC1h 35m
2026-07-17 ASA347 BUR → SEA Jul 17, 03:20 UTCJul 17, 05:25 UTC2h 5m
2026-07-16 ASA1452 - Jul 16, 20:55 UTCJul 17, 01:39 UTC4h 45m
2026-07-16 ASA1452 HNL → BUR Jul 16, 20:52 UTCJul 17, 01:40 UTC4h 48m
2026-07-16 ASA1430 - Jul 16, 13:20 UTCJul 16, 19:35 UTC6h 15m
2026-07-16 ASA1417 - Jul 16, 01:15 UTCJul 16, 03:00 UTC1h 45m
2026-07-15 ASA1417 - Jul 15, 21:25 UTCJul 15, 21:40 UTC15m
2026-07-15 ASA552 - Jul 15, 14:15 UTCJul 15, 19:50 UTC5h 35m
2026-07-15 ASA1408 SEA → BUR Jul 15, 03:00 UTCJul 15, 05:20 UTC2h 20m
2026-07-14 ASA740 - Jul 14, 22:55 UTCJul 15, 00:00 UTC1h 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 N845AK page for operator, model, and routing details .

Mode-S AB9276 frequently asked

What is Mode-S code AB9276?
AB9276 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N845AK.
Where is Mode-S AB9276 registered?
Mode-S code AB9276 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 AB9276 broadcasting right now?
Yes. Mode-S AB9276 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB9276, octal 52711166, decimal 11,244,150.
What flights does AB9276 operate?
Mode-S AB9276 has broadcast 20 distinct callsigns, including ASA355, ASA354, ASA1535, ASA740, ASA703.