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sensors Mode-S transponder

A7398E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N565AS · BOEING 737-800 · operated by ALASKA AIRLINES INC

Hex
A7398E
Octal
51634616
Decimal
10,959,246
Country
US
Tail
N565AS
Type
B738
Broadcasting now · callsign ASA98 · 18,725 ft
Flights observed
356
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

A7398E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A7398E 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
ASA1456 Alaska Airlines 6 2026-06-23
ASA573 Alaska Airlines 5 2026-04-19
ASA505 - 5 2026-07-13
ASA3 Alaska Airlines 5 2026-06-05
ASA291 - 5 2026-06-23
ASA2 Alaska Airlines 5 2026-04-28
ASA1 Alaska Airlines 5 2026-04-29
ASA735 Alaska Airlines 4 2026-04-20
ASA46 - 4 2026-06-25
ASA4 Alaska Airlines 4 2026-07-06
ASA286 Alaska Airlines 4 2026-04-19
ASA230 Alaska Airlines 4 2026-05-12
ASA10 Alaska Airlines 4 2026-06-05
ASA786 Alaska Airlines 3 2026-05-19
ASA774 Alaska Airlines 3 2026-06-11
ASA760 - 3 2026-07-12
ASA719 Alaska Airlines 3 2026-05-11
ASA718 Alaska Airlines 3 2026-04-20
ASA699 - 3 2026-07-05
ASA647 Alaska Airlines 3 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASA98 - Jul 14, 10:20 UTCJul 14, 11:30 UTC1h 10m
2026-07-14 ASA1899 - Jul 14, 03:35 UTCJul 14, 08:25 UTC4h 50m
2026-07-14 ASA1419 - Jul 14, 00:35 UTCJul 14, 01:55 UTC1h 20m
2026-07-13 ASA1418 - Jul 13, 18:50 UTCJul 13, 20:15 UTC1h 25m
2026-07-13 ASA1418 LAX → GDL Jul 13, 18:48 UTCJul 13, 21:46 UTC2h 58m
2026-07-13 ASA505 SEA → LAX Jul 13, 14:25 UTCJul 13, 16:55 UTC2h 30m
2026-07-13 ASA594 - Jul 13, 05:40 UTCJul 13, 07:30 UTC1h 50m
2026-07-13 ASA592 SEA → ONT Jul 13, 02:15 UTCJul 13, 04:40 UTC2h 25m
2026-07-12 ASA760 - Jul 12, 21:55 UTCJul 12, 23:30 UTC1h 35m
2026-07-12 ASA760 SNA → SEA Jul 12, 22:07 UTCJul 12, 23:50 UTC1h 43m
2026-07-12 ASA1357 - Jul 12, 18:15 UTCJul 12, 20:45 UTC2h 30m
2026-07-12 ASA377 ATL → SEA Jul 12, 11:15 UTCJul 12, 15:55 UTC4h 40m
2026-07-11 ASA727 SEA → ATL Jul 11, 23:40 UTCJul 12, 04:20 UTC4h 40m
2026-07-11 ASA9801 LAX → SEA Jul 11, 19:05 UTCJul 11, 21:05 UTC2h 0m
2026-07-10 ASA5 - Jul 10, 14:35 UTCJul 10, 19:25 UTC4h 50m
2026-07-09 ASA6 - Jul 9, 20:10 UTCJul 10, 00:30 UTC4h 20m
2026-07-09 ASA1329 - Jul 9, 16:05 UTCJul 9, 16:55 UTC50m
2026-07-09 ASA1625 LAX → SFO Jul 9, 13:10 UTCJul 9, 14:05 UTC55m
2026-07-09 ASA278 - Jul 9, 01:15 UTCJul 9, 03:10 UTC1h 55m
2026-07-08 ASA712 - Jul 8, 21:05 UTCJul 8, 23:00 UTC1h 55m
2026-07-08 ASA588 - Jul 8, 17:55 UTCJul 8, 20:00 UTC2h 5m
2026-07-08 ASA1641 RNO → PDX Jul 8, 15:10 UTCJul 8, 16:20 UTC1h 10m
2026-07-08 ASA1616 PDX → RNO Jul 8, 01:13 UTCJul 8, 02:16 UTC1h 3m
2026-07-08 ASA1616 PDX → RNO Jul 8, 01:15 UTCJul 8, 02:20 UTC1h 5m
2026-07-07 ASA325 - Jul 7, 19:40 UTCJul 7, 23:25 UTC3h 45m
2026-07-07 ASA324 PDX → ORD Jul 7, 14:25 UTCJul 7, 17:55 UTC3h 30m
2026-07-06 ASA9 DCA → PDX Jul 6, 23:15 UTCJul 7, 04:25 UTC5h 10m
2026-07-06 ASA4 SEA → DCA Jul 6, 16:00 UTCJul 6, 20:35 UTC4h 35m
2026-07-06 ASA1431 - Jul 6, 02:15 UTCJul 6, 04:30 UTC2h 15m
2026-07-06 ASA1432 LAX → PDX Jul 6, 00:20 UTCJul 6, 00:50 UTC30m
2026-07-05 ASA1432 LAX → PDX Jul 5, 22:25 UTCJul 6, 00:50 UTC2h 25m
2026-07-05 ASA1432 LAX → PDX Jul 5, 21:58 UTCJul 6, 00:03 UTC2h 5m
2026-07-05 ASA471 - Jul 5, 18:15 UTCJul 5, 20:20 UTC2h 5m
2026-07-05 ASA699 - Jul 5, 13:50 UTCJul 5, 16:15 UTC2h 25m
2026-07-04 ASA548 - Jul 4, 19:10 UTCJul 4, 21:15 UTC2h 5m
2026-07-04 ASA759 - Jul 4, 15:40 UTCJul 4, 18:00 UTC2h 20m
2026-07-04 ASA1518 ANC → SEA Jul 4, 02:10 UTCJul 4, 05:05 UTC2h 55m
2026-07-03 ASA1347 - Jul 3, 22:25 UTCJul 3, 23:10 UTC45m
2026-07-03 ASA1336 ANC → FAI Jul 3, 20:35 UTCJul 3, 21:20 UTC45m
2026-07-03 ASA1336 ANC → FAI Jul 3, 20:33 UTCJul 3, 21:18 UTC45m
2026-07-03 ASA432 DEN → ANC Jul 3, 13:35 UTCJul 3, 18:40 UTC5h 5m
2026-07-03 ASA1627 PDX → DEN Jul 3, 02:20 UTCJul 3, 04:20 UTC2h 0m
2026-07-01 ASA253 KOA → PDX Jul 1, 22:18 UTCJul 2, 03:28 UTC5h 10m
2026-07-01 ASA253 - Jul 1, 22:05 UTCJul 1, 22:25 UTC20m
2026-07-01 ASA253 KOA → PDX Jul 1, 22:05 UTCJul 2, 03:30 UTC5h 26m
2026-07-01 ASA252 PDX → KOA Jul 1, 20:15 UTCJul 1, 20:30 UTC15m
2026-07-01 ASA252 PDX → KOA Jul 1, 15:15 UTCJul 1, 15:55 UTC40m
2026-07-01 ASA252 PDX → KOA Jul 1, 15:20 UTCJul 1, 20:24 UTC5h 4m
2026-06-30 ASA1350 - Jun 30, 22:10 UTCJul 1, 02:20 UTC4h 10m
2026-06-30 ASA1345 SEA → BNA Jun 30, 16:50 UTCJun 30, 20:50 UTC4h 0m

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 N565AS page for operator, model, and routing details .

Mode-S A7398E frequently asked

What is Mode-S code A7398E?
A7398E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N565AS.
Where is Mode-S A7398E registered?
Mode-S code A7398E 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 A7398E broadcasting right now?
Yes. Mode-S A7398E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7398E, octal 51634616, decimal 10,959,246.
What flights does A7398E operate?
Mode-S A7398E has broadcast 20 distinct callsigns, including ASA1456, ASA573, ASA505, ASA3, ASA291.