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sensors Mode-S transponder

A499C3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N396HA · AIRBUS A-330-200 · operated by HAWAIIAN AIRLINES INC

Hex
A499C3
Octal
51114703
Decimal
10,787,267
Country
US
Tail
N396HA
Type
A332
No current signal · last broadcast Jul 26, 18:35 UTC
Flights observed
278
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 18:35 UTC

Last known position

Most recent position reported by Mode-S A499C3.

Country allocation

The ICAO 24-bit address A499C3 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
ASA819 Alaska Airlines 19 2026-07-23
ASA820 Alaska Airlines 17 2026-07-23
ASA807 Alaska Airlines 15 2026-07-26
ASA829 - 10 2026-07-14
ASA822 Alaska Airlines 10 2026-07-24
ASA821 Alaska Airlines 10 2026-07-24
ASA830 - 9 2026-07-14
ASA815 Alaska Airlines 9 2026-07-20
ASA808 Alaska Airlines 9 2026-07-26
ASA805 Alaska Airlines 9 2026-07-26
ASA803 Alaska Airlines 9 2026-06-14
ASA817 Alaska Airlines 8 2026-07-25
ASA864 - 7 2026-07-03
ASA832 Alaska Airlines 7 2026-07-19
ASA816 Alaska Airlines 7 2026-07-19
ASA806 Alaska Airlines 7 2026-07-25
ASA818 Alaska Airlines 6 2026-06-08
ASA900 - 5 2026-06-15
ASA875 Alaska Airlines 5 2026-06-05
ASA863 - 5 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA807 SEA → KOA Jul 26, 17:40 UTCJul 26, 18:35 UTC55m
2026-07-26 ASA808 SFO → SEA Jul 26, 09:35 UTCJul 26, 14:35 UTC5h 0m
2026-07-26 ASA805 SEA → OGG Jul 26, 01:40 UTCJul 26, 07:15 UTC5h 36m
2026-07-25 ASA806 OGG → SAN Jul 25, 18:15 UTCJul 25, 23:20 UTC5h 5m
2026-07-25 ASA817 LAX → HNL Jul 25, 09:20 UTCJul 25, 15:15 UTC5h 55m
2026-07-25 ASA876 HNL → SFO Jul 25, 00:00 UTCJul 25, 05:10 UTC5h 10m
2026-07-24 ASA821 SJC → OGG Jul 24, 20:45 UTCJul 24, 21:00 UTC15m
2026-07-24 ASA821 SJC → OGG Jul 24, 15:20 UTCJul 24, 16:20 UTC1h 0m
2026-07-24 ASA822 KOA → SEA Jul 24, 03:25 UTCJul 24, 04:25 UTC1h 0m
2026-07-23 ASA822 KOA → SEA Jul 23, 23:15 UTCJul 23, 23:25 UTC10m
2026-07-23 ASA819 PAE → HNL Jul 23, 20:25 UTCJul 23, 20:40 UTC15m
2026-07-23 ASA819 PAE → HNL Jul 23, 15:10 UTCJul 23, 15:55 UTC45m
2026-07-23 ASA820 SEA → NAS Jul 23, 00:15 UTCJul 23, 04:40 UTC4h 25m
2026-07-22 ASA835 - Jul 22, 15:35 UTCJul 22, 21:50 UTC6h 15m
2026-07-22 ASA836 - Jul 22, 02:10 UTCJul 22, 03:25 UTC1h 15m
2026-07-21 ASA836 - Jul 21, 22:25 UTCJul 21, 22:40 UTC15m
2026-07-21 ASA819 - Jul 21, 19:45 UTCJul 21, 20:10 UTC25m
2026-07-21 ASA819 - Jul 21, 14:55 UTCJul 21, 15:35 UTC40m
2026-07-21 ASA820 SEA → NAS Jul 21, 05:30 UTCJul 21, 06:35 UTC1h 5m
2026-07-21 ASA820 SEA → NAS Jul 21, 02:00 UTCJul 21, 02:20 UTC20m
2026-07-20 ASA815 SEA → SJC Jul 20, 17:50 UTCJul 20, 23:35 UTC5h 45m
2026-07-19 ASA816 HNL → SEA Jul 19, 22:55 UTCJul 20, 03:55 UTC5h 0m
2026-07-19 ASA832 LIH → SEA Jul 19, 12:40 UTCJul 19, 13:40 UTC1h 0m
2026-07-19 ASA831 HNL → PAE Jul 19, 02:25 UTCJul 19, 10:25 UTC8h 0m
2026-07-18 ASA813 LAX → OGG Jul 18, 23:10 UTCJul 18, 23:30 UTC20m
2026-07-18 ASA813 LAX → OGG Jul 18, 17:55 UTCJul 18, 18:45 UTC50m
2026-07-17 ASA814 - Jul 17, 22:45 UTCJul 18, 03:50 UTC5h 6m
2026-07-17 ASA819 - Jul 17, 20:00 UTCJul 17, 20:20 UTC20m
2026-07-17 ASA819 - Jul 17, 15:00 UTCJul 17, 15:44 UTC45m
2026-07-17 ASA820 SEA → NAS Jul 17, 04:10 UTCJul 17, 05:15 UTC1h 5m
2026-07-17 ASA820 SEA → NAS Jul 17, 00:40 UTCJul 17, 00:50 UTC10m
2026-07-16 ASA835 - Jul 16, 16:00 UTCJul 16, 22:25 UTC6h 25m
2026-07-15 ASA836 - Jul 15, 21:40 UTCJul 16, 03:05 UTC5h 25m
2026-07-15 ASA801 - Jul 15, 19:10 UTCJul 15, 19:35 UTC25m
2026-07-15 ASA801 - Jul 15, 14:15 UTCJul 15, 14:50 UTC35m
2026-07-15 ASA804 - Jul 15, 11:10 UTCJul 15, 11:50 UTC40m
2026-07-15 ASA804 - Jul 15, 07:05 UTCJul 15, 07:25 UTC20m
2026-07-14 ASA829 - Jul 14, 23:25 UTCJul 14, 23:40 UTC15m
2026-07-14 ASA829 - Jul 14, 13:40 UTCJul 14, 19:10 UTC5h 30m
2026-07-14 ASA830 - Jul 14, 06:05 UTCJul 14, 11:20 UTC5h 15m
2026-07-14 ASA830 - Jul 14, 01:55 UTCJul 14, 02:05 UTC10m
2026-07-13 ASA813 - Jul 13, 18:05 UTCJul 13, 23:30 UTC5h 25m
2026-07-12 ASA814 - Jul 12, 23:10 UTCJul 13, 04:15 UTC5h 5m
2026-07-12 ASA832 - Jul 12, 13:01 UTCJul 12, 20:10 UTC7h 10m
2026-07-12 ASA831 - Jul 12, 02:15 UTCJul 12, 10:20 UTC8h 5m
2026-07-11 ASA829 - Jul 11, 23:15 UTCJul 11, 23:30 UTC15m
2026-07-11 ASA829 - Jul 11, 13:40 UTCJul 11, 19:20 UTC5h 40m
2026-07-11 ASA830 - Jul 11, 02:10 UTCJul 11, 11:00 UTC8h 50m
2026-07-10 ASA807 - Jul 10, 23:40 UTCJul 10, 23:55 UTC15m
2026-07-10 ASA807 - Jul 10, 18:00 UTCJul 10, 19:10 UTC1h 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 N396HA page for operator, model, and routing details .

Mode-S A499C3 frequently asked

What is Mode-S code A499C3?
A499C3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N396HA.
Where is Mode-S A499C3 registered?
Mode-S code A499C3 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 A499C3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A499C3, octal 51114703, decimal 10,787,267.
What flights does A499C3 operate?
Mode-S A499C3 has broadcast 20 distinct callsigns, including ASA819, ASA820, ASA807, ASA829, ASA822.