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sensors Mode-S transponder

AD2733

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N947AK · BOEING 737 MAX 9 · operated by ALASKA AIRLINES INC

Hex
AD2733
Octal
53223463
Decimal
11,347,763
Country
US
Tail
N947AK
Type
B39M
Broadcasting now · callsign ASA311 · 36,000 ft
Flights observed
311
Distinct callsigns
20
Country
US
Last broadcast
51m ago

Current position

AD2733 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD2733 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
ASA754 Alaska Airlines 5 2026-06-02
ASA381 - 5 2026-07-13
ASA708 - 4 2026-06-17
ASA584 Alaska Airlines 4 2026-05-23
ASA569 - 4 2026-04-13
ASA439 Alaska Airlines 4 2026-06-13
ASA1446 Alaska Airlines 4 2026-06-12
ASA9430 - 3 2026-07-06
ASA761 - 3 2026-06-14
ASA537 Alaska Airlines 3 2026-06-09
ASA50 Alaska Airlines 3 2026-06-07
ASA438 - 3 2026-04-15
ASA420 - 3 2026-07-12
ASA39 Alaska Airlines 3 2026-04-30
ASA380 Alaska Airlines 3 2026-05-06
ASA352 Alaska Airlines 3 2026-06-06
ASA328 - 3 2026-06-18
ASA326 - 3 2026-07-08
ASA323 Alaska Airlines 3 2026-04-17
ASA266 Alaska Airlines 3 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASA311 - Jul 14, 10:35 UTCJul 14, 10:45 UTC10m
2026-07-13 ASA460 SEA → BOS Jul 13, 23:30 UTCJul 14, 04:20 UTC4h 50m
2026-07-13 ASA381 DEN → SEA Jul 13, 19:45 UTCJul 13, 21:55 UTC2h 10m
2026-07-13 ASA381 DEN → SEA Jul 13, 19:42 UTCJul 13, 21:47 UTC2h 5m
2026-07-13 ASA375 SEA → DEN Jul 13, 15:15 UTCJul 13, 17:30 UTC2h 15m
2026-07-13 ASA309 MCO → SEA Jul 13, 00:15 UTCJul 13, 05:25 UTC5h 10m
2026-07-12 ASA420 SEA → MCO Jul 12, 17:30 UTCJul 12, 22:25 UTC4h 55m
2026-07-12 ASA543 DFW → SEA Jul 12, 11:57 UTCJul 12, 14:59 UTC3h 2m
2026-07-12 ASA543 - Jul 12, 11:35 UTCJul 12, 11:40 UTC5m
2026-07-12 ASA542 SEA → DFW Jul 12, 06:25 UTCJul 12, 09:45 UTC3h 20m
2026-07-11 ASA787 - Jul 11, 22:55 UTCJul 12, 04:05 UTC5h 10m
2026-07-11 ASA787 SEA → CHS Jul 11, 16:00 UTCJul 11, 20:35 UTC4h 35m
2026-07-11 ASA544 ANC → SEA Jul 11, 01:35 UTCJul 11, 04:40 UTC3h 5m
2026-07-10 ASA659 LAX → SFO Jul 10, 20:45 UTCJul 10, 23:45 UTC3h 0m
2026-07-10 ASA623 BNA → SEA Jul 10, 14:50 UTCJul 10, 19:05 UTC4h 15m
2026-07-10 ASA416 SEA → BNA Jul 10, 00:45 UTCJul 10, 04:45 UTC4h 0m
2026-07-08 ASA326 TPA → SEA Jul 8, 23:30 UTCJul 9, 05:00 UTC5h 30m
2026-07-06 ASA9430 - Jul 6, 21:00 UTCJul 6, 21:10 UTC10m
2026-07-06 ASA9430 - Jul 6, 19:20 UTCJul 6, 21:10 UTC1h 50m
2026-07-06 ASA9430 GSO → TPA Jul 6, 19:16 UTCJul 6, 20:43 UTC1h 27m
2026-06-20 ASA9420 - Jun 20, 18:10 UTCJun 20, 20:45 UTC2h 35m
2026-06-20 ASA499 SEA → OAK Jun 20, 13:34 UTCJun 20, 14:05 UTC30m
2026-06-19 ASA301 - Jun 19, 22:30 UTCJun 20, 04:04 UTC5h 35m
2026-06-19 ASA295 LAX → SEA Jun 19, 15:49 UTCJun 19, 21:09 UTC5h 20m
2026-06-19 ASA206 PDX → SFO Jun 19, 12:09 UTCJun 19, 13:04 UTC55m
2026-06-19 ASA353 - Jun 19, 00:59 UTCJun 19, 01:45 UTC45m
2026-06-18 ASA1633 SJC → PDX Jun 18, 21:30 UTCJun 18, 22:50 UTC1h 20m
2026-06-18 ASA1632 PDX → SJC Jun 18, 18:50 UTCJun 18, 20:15 UTC1h 25m
2026-06-18 ASA413 SFO → LAS Jun 18, 12:55 UTCJun 18, 17:00 UTC4h 5m
2026-06-18 ASA328 BFI → ORD Jun 18, 08:00 UTCJun 18, 11:10 UTC3h 10m
2026-06-18 ASA328 SEA → ORD Jun 18, 07:59 UTCJun 18, 10:55 UTC2h 56m
2026-06-18 ASA244 OGG → SEA Jun 18, 01:18 UTCJun 18, 06:32 UTC5h 14m
2026-06-18 ASA244 OGG → SEA Jun 18, 01:32 UTCJun 18, 06:27 UTC4h 55m
2026-06-17 ASA254 - Jun 17, 18:40 UTCJun 17, 19:20 UTC40m
2026-06-17 ASA708 MCO → SAN Jun 17, 11:55 UTCJun 17, 16:30 UTC4h 35m
2026-06-17 ASA394 SJC → PDX Jun 17, 04:55 UTCJun 17, 09:20 UTC4h 25m
2026-06-17 ASA683 SMF → SEA Jun 17, 00:25 UTCJun 17, 01:55 UTC1h 30m
2026-06-16 ASA681 SEA → SMF Jun 16, 21:45 UTCJun 16, 23:00 UTC1h 15m
2026-06-16 ASA1477 SFO → SEA Jun 16, 17:35 UTCJun 16, 20:00 UTC2h 26m
2026-06-16 ASA201 IAD → SAN Jun 16, 00:15 UTCJun 16, 05:20 UTC5h 5m
2026-06-15 ASA506 - Jun 15, 18:45 UTCJun 15, 22:45 UTC4h 0m
2026-06-15 ASA1557 SFO → SAN Jun 15, 15:59 UTCJun 15, 17:10 UTC1h 10m
2026-06-15 ASA791 EWR → SEA Jun 15, 01:45 UTCJun 15, 03:30 UTC1h 45m
2026-06-14 ASA762 PDX → PHX Jun 14, 22:10 UTCJun 14, 23:00 UTC50m
2026-06-14 ASA762 PDX → PHX Jun 14, 17:30 UTCJun 14, 17:40 UTC10m
2026-06-14 ASA761 - Jun 14, 06:40 UTCJun 14, 07:00 UTC20m
2026-06-14 ASA761 - Jun 14, 01:55 UTCJun 14, 02:40 UTC45m
2026-06-13 ASA439 SEA → SFO Jun 13, 19:50 UTCJun 14, 00:05 UTC4h 15m
2026-06-13 ASA1420 SJC → AUS Jun 13, 14:15 UTCJun 13, 17:50 UTC3h 35m
2026-06-13 ASA1420 SJC → AUS Jun 13, 14:25 UTCJun 13, 17:38 UTC3h 13m

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 N947AK page for operator, model, and routing details .

Mode-S AD2733 frequently asked

What is Mode-S code AD2733?
AD2733 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N947AK.
Where is Mode-S AD2733 registered?
Mode-S code AD2733 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 AD2733 broadcasting right now?
Yes. Mode-S AD2733 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD2733, octal 53223463, decimal 11,347,763.
What flights does AD2733 operate?
Mode-S AD2733 has broadcast 20 distinct callsigns, including ASA754, ASA381, ASA708, ASA584, ASA569.