Apparatus

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sensors Mode-S transponder

A262AD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N253AK · BOEING 737-900 · operated by ALASKA AIRLINES INC

Hex
A262AD
Octal
50461255
Decimal
10,642,093
Country
US
Tail
N253AK
Type
B739
Broadcasting now · callsign ASA399 · 36,000 ft
Flights observed
346
Distinct callsigns
20
Country
US
Last broadcast
7m ago

Current position

A262AD is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A262AD 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
ASA629 - 7 2026-07-11
ASA352 - 7 2026-07-04
ASA787 - 6 2026-07-02
ASA380 Alaska Airlines 6 2026-07-04
ASA370 Alaska Airlines 6 2026-05-05
ASA592 Alaska Airlines 4 2026-05-28
ASA551 - 4 2026-06-28
ASA523 Alaska Airlines 4 2026-06-06
ASA494 - 4 2026-07-06
ASA451 Alaska Airlines 4 2026-04-14
ASA371 Alaska Airlines 4 2026-05-05
ASA339 Alaska Airlines 4 2026-05-03
ASA1319 Alaska Airlines 4 2026-05-24
ASA9803 Alaska Airlines 3 2026-05-15
ASA777 - 3 2026-07-11
ASA749 Alaska Airlines 3 2026-05-27
ASA719 Alaska Airlines 3 2026-05-29
ASA706 - 3 2026-06-24
ASA697 - 3 2026-07-11
ASA692 Alaska Airlines 3 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASA399 - Jul 14, 14:20 UTCJul 14, 15:15 UTC55m
2026-07-14 ASA1398 SEA → SAN Jul 14, 03:40 UTCJul 14, 06:20 UTC2h 40m
2026-07-13 ASA1381 SAN → SEA Jul 13, 23:10 UTCJul 14, 01:20 UTC2h 10m
2026-07-13 ASA1346 SEA → SAN Jul 13, 19:15 UTCJul 13, 21:55 UTC2h 40m
2026-07-13 ASA21 JFK → SEA Jul 13, 11:35 UTCJul 13, 16:50 UTC5h 15m
2026-07-12 ASA36 - Jul 12, 21:40 UTCJul 13, 02:50 UTC5h 10m
2026-07-12 ASA467 SEA → SAN Jul 12, 17:48 UTCJul 12, 20:14 UTC2h 26m
2026-07-12 ASA467 SEA → SAN Jul 12, 17:40 UTCJul 12, 20:10 UTC2h 30m
2026-07-12 ASA1473 - Jul 12, 13:45 UTCJul 12, 15:50 UTC2h 5m
2026-07-12 ASA336 SEA → SAN Jul 12, 02:55 UTCJul 12, 05:25 UTC2h 30m
2026-07-11 ASA697 - Jul 11, 23:35 UTCJul 12, 00:35 UTC1h 0m
2026-07-11 ASA697 - Jul 11, 21:10 UTCJul 11, 21:55 UTC45m
2026-07-11 ASA629 LAS → SEA Jul 11, 17:40 UTCJul 11, 19:40 UTC2h 0m
2026-07-11 ASA777 - Jul 11, 14:15 UTCJul 11, 16:30 UTC2h 15m
2026-07-11 ASA366 LAS → PAE Jul 11, 03:10 UTCJul 11, 05:10 UTC2h 0m
2026-07-10 ASA1456 SEA → LAS Jul 10, 23:55 UTCJul 11, 01:55 UTC2h 0m
2026-07-10 ASA384 - Jul 10, 20:35 UTCJul 10, 22:10 UTC1h 35m
2026-07-10 ASA383 - Jul 10, 17:25 UTCJul 10, 19:00 UTC1h 35m
2026-07-09 ASA425 PHX → SEA Jul 9, 22:50 UTCJul 10, 01:25 UTC2h 35m
2026-07-09 ASA716 SFO → SAN Jul 9, 19:10 UTCJul 9, 21:20 UTC2h 10m
2026-07-09 ASA716 SFO → SAN Jul 9, 19:08 UTCJul 9, 21:14 UTC2h 6m
2026-07-09 ASA1630 EWR → PDX Jul 9, 12:00 UTCJul 9, 17:20 UTC5h 20m
2026-07-08 ASA263 SEA → EWR Jul 8, 23:20 UTCJul 9, 04:05 UTC4h 45m
2026-07-08 ASA543 LAX → PDX Jul 8, 15:15 UTCJul 8, 18:55 UTC3h 40m
2026-07-08 ASA542 SEA → DFW Jul 8, 06:20 UTCJul 8, 09:35 UTC3h 15m
2026-07-07 ASA326 TPA → SEA Jul 7, 23:20 UTCJul 8, 04:45 UTC5h 25m
2026-07-07 ASA262 SEA → TPA Jul 7, 17:00 UTCJul 7, 22:00 UTC5h 0m
2026-07-06 ASA494 - Jul 6, 21:55 UTCJul 7, 01:45 UTC3h 50m
2026-07-06 ASA494 - Jul 6, 17:00 UTCJul 6, 20:40 UTC3h 40m
2026-07-06 ASA543 LAX → PDX Jul 6, 11:45 UTCJul 6, 15:20 UTC3h 35m
2026-07-06 ASA542 SEA → DFW Jul 6, 06:20 UTCJul 6, 09:40 UTC3h 20m
2026-07-06 ASA268 ANC → SEA Jul 6, 00:55 UTCJul 6, 04:05 UTC3h 10m
2026-07-05 ASA657 SEA → ANC Jul 5, 20:20 UTCJul 5, 23:30 UTC3h 10m
2026-07-05 ASA512 - Jul 5, 14:40 UTCJul 5, 17:00 UTC2h 20m
2026-07-05 ASA780 - Jul 5, 01:35 UTCJul 5, 04:10 UTC2h 35m
2026-07-04 ASA380 SEA → MSP Jul 4, 21:40 UTCJul 5, 00:10 UTC2h 30m
2026-07-04 ASA1394 PDX → SAN Jul 4, 18:10 UTCJul 4, 20:20 UTC2h 10m
2026-07-04 ASA511 BNA → PDX Jul 4, 14:10 UTCJul 4, 16:40 UTC2h 30m
2026-07-04 ASA1550 ANC → PHX Jul 4, 07:10 UTCJul 4, 12:10 UTC5h 0m
2026-07-04 ASA352 - Jul 4, 02:00 UTCJul 4, 02:40 UTC40m
2026-07-03 ASA351 LAX → SEA Jul 3, 23:45 UTCJul 4, 00:35 UTC50m
2026-07-03 ASA1560 SEA → ANC Jul 3, 05:30 UTCJul 3, 08:45 UTC3h 15m
2026-07-02 ASA787 - Jul 2, 22:35 UTCJul 3, 03:50 UTC5h 15m
2026-07-02 ASA787 - Jul 2, 16:10 UTCJul 2, 20:55 UTC4h 45m
2026-07-02 ASA1444 SLC → SEA Jul 2, 12:30 UTCJul 2, 14:10 UTC1h 40m
2026-07-02 ASA1459 SEA → SLC Jul 2, 04:45 UTCJul 2, 06:20 UTC1h 35m
2026-07-02 ASA1459 SEA → SLC Jul 2, 04:45 UTCJul 2, 06:21 UTC1h 36m
2026-07-02 ASA226 ANC → SEA Jul 2, 00:20 UTCJul 2, 03:05 UTC2h 45m
2026-07-02 ASA226 ANC → SEA Jul 2, 00:02 UTCJul 2, 02:49 UTC2h 47m
2026-07-01 ASA433 SEA → ANC Jul 1, 18:40 UTCJul 1, 21:55 UTC3h 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 N253AK page for operator, model, and routing details .

Mode-S A262AD frequently asked

What is Mode-S code A262AD?
A262AD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N253AK.
Where is Mode-S A262AD registered?
Mode-S code A262AD 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 A262AD broadcasting right now?
Yes. Mode-S A262AD is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A262AD, octal 50461255, decimal 10,642,093.
What flights does A262AD operate?
Mode-S A262AD has broadcast 20 distinct callsigns, including ASA629, ASA352, ASA787, ASA380, ASA370.