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sensors Mode-S transponder

AA98A4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N782HA · BOEING 787-9 Dreamliner · operated by HAWAIIAN AIRLINES INC

Hex
AA98A4
Octal
52514244
Decimal
11,180,196
Country
US
Tail
N782HA
Type
B789
No current signal · last broadcast Jul 26, 22:20 UTC
Flights observed
208
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:20 UTC

Last known position

Most recent position reported by Mode-S AA98A4.

Country allocation

The ICAO 24-bit address AA98A4 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
ASA142 Alaska Airlines 26 2026-06-10
ASA141 Alaska Airlines 23 2026-06-10
ASA181 Alaska Airlines 17 2026-07-25
ASA180 Alaska Airlines 17 2026-07-25
ASA121 Alaska Airlines 17 2026-07-26
ASA122 Alaska Airlines 14 2026-07-26
ASA120 Alaska Airlines 13 2026-07-19
ASA119 Alaska Airlines 13 2026-07-26
ASA823 Alaska Airlines 11 2026-04-20
ASA101 Alaska Airlines 11 2026-07-23
ASA100 Alaska Airlines 11 2026-07-23
ASA824 Alaska Airlines 7 2026-04-21
ASA172 Alaska Airlines 4 2026-05-13
ASA171 Alaska Airlines 4 2026-05-11
ASA9984 Alaska Airlines 2 2026-04-18
ASA991 Alaska Airlines 2 2026-04-15
ASA990 Alaska Airlines 2 2026-04-14
ASA9304 Alaska Airlines 2 2026-07-18
ASA900 Alaska Airlines 2 2026-04-15
ASA893 Alaska Airlines 2 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA119 SEA → ONT Jul 26, 21:45 UTCJul 26, 22:20 UTC35m
2026-07-26 ASA122 BUR → PDX Jul 26, 15:00 UTCJul 26, 16:00 UTC1h 0m
2026-07-26 ASA122 BUR → PDX Jul 26, 11:10 UTCJul 26, 11:25 UTC15m
2026-07-26 ASA121 LAS → SFO Jul 26, 08:45 UTCJul 26, 09:05 UTC20m
2026-07-26 ASA121 LAS → SFO Jul 26, 03:45 UTCJul 26, 04:35 UTC50m
2026-07-25 ASA181 SJD → SEA Jul 25, 14:00 UTCJul 26, 01:00 UTC11h 0m
2026-07-25 ASA180 PVR → LAX Jul 25, 01:10 UTCJul 25, 11:05 UTC9h 55m
2026-07-23 ASA101 PDX → PHX Jul 23, 16:25 UTCJul 24, 01:45 UTC9h 20m
2026-07-23 ASA100 ANC → SEA Jul 23, 05:20 UTCJul 23, 13:45 UTC8h 25m
2026-07-22 ASA181 SJD → SEA Jul 22, 14:15 UTCJul 23, 01:10 UTC10h 55m
2026-07-22 ASA180 PVR → LAX Jul 22, 01:05 UTCJul 22, 10:25 UTC9h 20m
2026-07-20 ASA181 SJD → SEA Jul 20, 14:20 UTCJul 21, 01:05 UTC10h 44m
2026-07-20 ASA180 PVR → LAX Jul 20, 01:10 UTCJul 20, 11:20 UTC10h 10m
2026-07-19 ASA120 SEA → ONT Jul 19, 10:45 UTCJul 19, 20:30 UTC9h 45m
2026-07-18 ASA119 SEA → ICN Jul 18, 21:30 UTCJul 19, 08:05 UTC10h 35m
2026-07-18 ASA9304 HNL → LAX Jul 18, 16:30 UTCJul 18, 17:45 UTC1h 15m
2026-07-18 ASA9304 HNL → LAX Jul 18, 12:30 UTCJul 18, 12:40 UTC10m
2026-07-18 ASA121 LAS → SFO Jul 18, 10:15 UTCJul 18, 10:25 UTC10m
2026-07-18 ASA121 LAS → SFO Jul 18, 05:20 UTCJul 18, 06:10 UTC50m
2026-07-17 ASA181 FCO → SEA Jul 17, 15:44 UTCJul 18, 02:40 UTC10h 55m
2026-07-17 ASA180 SEA → FCO Jul 17, 00:55 UTCJul 17, 11:04 UTC10h 10m
2026-07-16 ASA120 ICN → SEA Jul 16, 10:50 UTCJul 16, 20:49 UTC10h 0m
2026-07-15 ASA119 SEA → ICN Jul 15, 22:00 UTCJul 16, 08:25 UTC10h 25m
2026-07-15 ASA122 - Jul 15, 11:40 UTCJul 15, 12:35 UTC55m
2026-07-15 ASA122 - Jul 15, 07:40 UTCJul 15, 07:55 UTC15m
2026-07-14 ASA121 - Jul 14, 23:55 UTCJul 15, 05:05 UTC5h 10m
2026-07-14 ASA122 - Jul 14, 11:50 UTCJul 14, 12:40 UTC50m
2026-07-14 ASA122 - Jul 14, 07:40 UTCJul 14, 07:50 UTC10m
2026-07-13 ASA121 - Jul 13, 23:50 UTCJul 14, 05:10 UTC5h 20m
2026-07-13 ASA120 ICN → SEA Jul 13, 11:00 UTCJul 13, 20:50 UTC9h 50m
2026-07-12 ASA119 SEA → ICN Jul 12, 21:20 UTCJul 13, 07:50 UTC10h 30m
2026-07-12 ASA122 - Jul 12, 07:55 UTCJul 12, 13:05 UTC5h 10m
2026-07-11 ASA121 - Jul 11, 23:45 UTCJul 12, 05:10 UTC5h 25m
2026-07-11 ASA120 - Jul 11, 10:50 UTCJul 11, 20:25 UTC9h 35m
2026-07-10 ASA119 SEA → ICN Jul 10, 21:35 UTCJul 11, 07:45 UTC10h 10m
2026-07-09 ASA101 LHR → SEA Jul 9, 16:45 UTCJul 10, 01:50 UTC9h 5m
2026-07-09 ASA100 SEA → LHR Jul 9, 05:10 UTCJul 9, 13:55 UTC8h 45m
2026-07-08 ASA181 - Jul 8, 14:00 UTCJul 9, 00:35 UTC10h 35m
2026-07-08 ASA180 SEA → FCO Jul 8, 00:45 UTCJul 8, 11:00 UTC10h 15m
2026-07-06 ASA101 - Jul 6, 16:30 UTCJul 7, 01:50 UTC9h 20m
2026-07-06 ASA100 SEA → LHR Jul 6, 05:15 UTCJul 6, 13:50 UTC8h 35m
2026-07-05 ASA181 - Jul 5, 13:45 UTCJul 6, 00:50 UTC11h 5m
2026-07-05 ASA180 SEA → FCO Jul 5, 00:55 UTCJul 5, 10:55 UTC10h 0m
2026-07-04 ASA122 - Jul 4, 11:50 UTCJul 4, 12:40 UTC50m
2026-07-04 ASA121 LAS → SFO Jul 4, 04:50 UTCJul 4, 05:05 UTC15m
2026-07-03 ASA121 LAS → SFO Jul 3, 23:50 UTCJul 4, 00:35 UTC45m
2026-07-03 ASA122 - Jul 3, 07:40 UTCJul 3, 12:45 UTC5h 5m
2026-07-03 ASA121 LAS → SFO Jul 3, 04:40 UTCJul 3, 05:00 UTC20m
2026-07-02 ASA121 LAS → SFO Jul 2, 23:50 UTCJul 3, 00:40 UTC50m
2026-07-02 ASA120 ICN → SEA Jul 2, 11:00 UTCJul 2, 20:10 UTC9h 10m

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 N782HA page for operator, model, and routing details .

Mode-S AA98A4 frequently asked

What is Mode-S code AA98A4?
AA98A4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N782HA.
Where is Mode-S AA98A4 registered?
Mode-S code AA98A4 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 AA98A4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA98A4, octal 52514244, decimal 11,180,196.
What flights does AA98A4 operate?
Mode-S AA98A4 has broadcast 20 distinct callsigns, including ASA142, ASA141, ASA181, ASA180, ASA121.