Apparatus

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sensors Mode-S transponder

AB148B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N813AK · BOEING 737 MAX 8 · operated by ALASKA AIRLINES INC

Hex
AB148B
Octal
52612213
Decimal
11,211,915
Country
US
Tail
N813AK
Type
B38M
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
418
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S AB148B.

Country allocation

The ICAO 24-bit address AB148B 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
ASA1452 Alaska Airlines 14 2026-07-26
ASA1353 - 13 2026-07-10
ASA1354 - 12 2026-07-10
ASA1417 Alaska Airlines 9 2026-07-26
ASA552 Alaska Airlines 7 2026-07-25
ASA312 Alaska Airlines 7 2026-07-21
ASA1430 Alaska Airlines 7 2026-07-26
ASA699 Alaska Airlines 6 2026-04-19
ASA482 - 6 2026-07-13
ASA347 Alaska Airlines 6 2026-07-24
ASA533 - 5 2026-07-15
ASA234 - 5 2026-06-18
ASA1618 Alaska Airlines 5 2026-07-18
ASA717 Alaska Airlines 4 2026-05-27
ASA705 - 4 2026-07-15
ASA696 - 4 2026-07-09
ASA616 Alaska Airlines 4 2026-06-09
ASA555 - 4 2026-06-26
ASA546 Alaska Airlines 4 2026-04-27
ASA400 Alaska Airlines 4 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA1452 SJD → SFO Jul 26, 21:45 UTCJul 26, 22:00 UTC15m
2026-07-26 ASA1430 LAX → SJD Jul 26, 13:35 UTCJul 26, 20:05 UTC6h 30m
2026-07-26 ASA1417 GDL → SJC Jul 26, 01:00 UTCJul 26, 02:55 UTC1h 55m
2026-07-25 ASA1417 GDL → SJC Jul 25, 21:30 UTCJul 25, 21:50 UTC20m
2026-07-25 ASA552 LAX → SEA Jul 25, 14:10 UTCJul 25, 19:40 UTC5h 30m
2026-07-25 ASA1408 SJC → GDL Jul 25, 02:40 UTCJul 25, 04:55 UTC2h 15m
2026-07-24 ASA407 ORD → SEA Jul 24, 21:20 UTCJul 25, 01:04 UTC3h 44m
2026-07-24 ASA407 ORD → SEA Jul 24, 21:15 UTCJul 25, 01:10 UTC3h 55m
2026-07-24 ASA265 PDX → SFO Jul 24, 16:15 UTCJul 24, 19:35 UTC3h 20m
2026-07-24 ASA347 FLL → SFO Jul 24, 03:30 UTCJul 24, 05:30 UTC2h 0m
2026-07-24 ASA1452 SJD → SFO Jul 24, 01:35 UTCJul 24, 02:25 UTC50m
2026-07-23 ASA1452 SJD → SFO Jul 23, 21:45 UTCJul 23, 22:00 UTC15m
2026-07-23 ASA1430 LAX → SJD Jul 23, 13:30 UTCJul 23, 20:05 UTC6h 35m
2026-07-22 ASA1417 GDL → SJC Jul 22, 21:45 UTCJul 22, 22:05 UTC20m
2026-07-22 ASA1417 GDL → SJC Jul 22, 21:44 UTCJul 23, 03:04 UTC5h 20m
2026-07-22 ASA552 LAX → SEA Jul 22, 14:25 UTCJul 22, 20:15 UTC5h 50m
2026-07-22 ASA1372 LAX → SEA Jul 22, 01:26 UTCJul 22, 03:36 UTC2h 10m
2026-07-22 ASA1372 LAX → SEA Jul 22, 01:15 UTCJul 22, 03:40 UTC2h 25m
2026-07-21 ASA312 SEA → OMA Jul 21, 20:25 UTCJul 21, 23:30 UTC3h 5m
2026-07-21 ASA312 SEA → OMA Jul 21, 16:30 UTCJul 21, 19:05 UTC2h 35m
2026-07-21 ASA563 MCI → SEA Jul 21, 11:25 UTCJul 21, 14:35 UTC3h 10m
2026-07-21 ASA564 SEA → MCI Jul 21, 02:00 UTCJul 21, 04:55 UTC2h 55m
2026-07-20 ASA439 - Jul 20, 20:20 UTCJul 21, 00:10 UTC3h 50m
2026-07-20 ASA1420 - Jul 20, 14:35 UTCJul 20, 18:25 UTC3h 50m
2026-07-19 ASA1319 SFO → PDX Jul 19, 21:20 UTCJul 20, 03:05 UTC5h 45m
2026-07-19 ASA390 SAN → BOS Jul 19, 14:30 UTCJul 19, 19:40 UTC5h 10m
2026-07-18 ASA1618 SAN → DEN Jul 18, 17:58 UTCJul 18, 19:31 UTC1h 33m
2026-07-18 ASA1618 SAN → DEN Jul 18, 17:45 UTCJul 18, 19:35 UTC1h 50m
2026-07-18 ASA1618 SAN → DEN Jul 18, 14:25 UTCJul 18, 16:20 UTC1h 55m
2026-07-18 ASA1466 ORD → SAN Jul 18, 02:19 UTCJul 18, 05:45 UTC3h 26m
2026-07-17 ASA1478 - Jul 17, 23:55 UTCJul 18, 00:00 UTC5m
2026-07-17 ASA1478 SAN → ORD Jul 17, 20:12 UTCJul 17, 23:36 UTC3h 24m
2026-07-17 ASA1478 - Jul 17, 20:15 UTCJul 18, 00:00 UTC3h 45m
2026-07-17 ASA15 DCA → SAN Jul 17, 13:25 UTCJul 17, 18:05 UTC4h 40m
2026-07-16 ASA14 - Jul 16, 21:00 UTCJul 17, 01:39 UTC4h 40m
2026-07-16 ASA1618 DEN → SAN Jul 16, 17:54 UTCJul 16, 19:50 UTC1h 55m
2026-07-16 ASA1618 - Jul 16, 14:35 UTCJul 16, 16:30 UTC1h 55m
2026-07-16 ASA635 SEA → SAN Jul 16, 03:45 UTCJul 16, 06:15 UTC2h 30m
2026-07-16 ASA214 - Jul 16, 00:35 UTCJul 16, 02:15 UTC1h 40m
2026-07-16 ASA214 KTN → SEA Jul 16, 00:30 UTCJul 16, 01:58 UTC1h 28m
2026-07-15 ASA92 - Jul 15, 22:05 UTCJul 15, 23:20 UTC1h 15m
2026-07-15 ASA705 OAK → SEA Jul 15, 17:30 UTCJul 15, 18:55 UTC1h 25m
2026-07-15 ASA533 SEA → OAK Jul 15, 14:25 UTCJul 15, 16:10 UTC1h 45m
2026-07-15 ASA533 SEA → OAK Jul 15, 14:21 UTCJul 15, 16:04 UTC1h 43m
2026-07-15 ASA1333 - Jul 15, 03:50 UTCJul 15, 07:00 UTC3h 10m
2026-07-14 ASA99 SEA → ANC Jul 14, 23:35 UTCJul 15, 02:45 UTC3h 10m
2026-07-14 ASA654 - Jul 14, 19:50 UTCJul 14, 21:45 UTC1h 55m
2026-07-14 ASA654 ONT → SEA Jul 14, 19:53 UTCJul 14, 21:35 UTC1h 42m
2026-07-14 ASA1364 SEA → ONT Jul 14, 16:15 UTCJul 14, 18:34 UTC2h 19m
2026-07-14 ASA1364 SEA → ONT Jul 14, 16:15 UTCJul 14, 18:40 UTC2h 25m

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 N813AK page for operator, model, and routing details .

Mode-S AB148B frequently asked

What is Mode-S code AB148B?
AB148B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N813AK.
Where is Mode-S AB148B registered?
Mode-S code AB148B 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 AB148B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB148B, octal 52612213, decimal 11,211,915.
What flights does AB148B operate?
Mode-S AB148B has broadcast 20 distinct callsigns, including ASA1452, ASA1353, ASA1354, ASA1417, ASA552.