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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 3h ago
Flights observed
238
Distinct callsigns
20
Country
US
Last broadcast
3h ago

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
ASA807 - 14 2026-07-10
ASA819 Alaska Airlines 13 2026-07-06
ASA820 - 12 2026-07-06
ASA803 Alaska Airlines 9 2026-06-14
ASA830 - 8 2026-07-14
ASA829 - 8 2026-07-11
ASA822 - 8 2026-06-21
ASA821 Alaska Airlines 8 2026-06-21
ASA815 - 8 2026-06-29
ASA808 - 8 2026-07-10
ASA805 - 8 2026-07-09
ASA864 - 7 2026-07-03
ASA817 Alaska Airlines 7 2026-06-08
ASA832 - 6 2026-07-12
ASA818 Alaska Airlines 6 2026-06-08
ASA816 - 6 2026-06-28
ASA806 - 6 2026-07-08
ASA900 - 5 2026-06-15
ASA875 Alaska Airlines 5 2026-06-05
ASA863 - 5 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 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
2026-07-10 ASA808 - Jul 10, 09:30 UTCJul 10, 14:35 UTC5h 5m
2026-07-09 ASA807 - Jul 9, 23:05 UTCJul 9, 23:20 UTC15m
2026-07-09 ASA807 - Jul 9, 17:25 UTCJul 9, 18:25 UTC1h 0m
2026-07-09 ASA808 - Jul 9, 10:10 UTCJul 9, 15:15 UTC5h 5m
2026-07-09 ASA805 LAS → HNL Jul 9, 01:45 UTCJul 9, 07:55 UTC6h 10m
2026-07-08 ASA806 - Jul 8, 18:15 UTCJul 8, 23:20 UTC5h 5m
2026-07-08 ASA882 - Jul 8, 09:30 UTCJul 8, 14:45 UTC5h 15m
2026-07-08 ASA881 - Jul 8, 01:40 UTCJul 8, 06:50 UTC5h 10m
2026-07-07 ASA813 LAX → OGG Jul 7, 22:55 UTCJul 7, 23:05 UTC10m
2026-07-07 ASA813 LAX → OGG Jul 7, 18:05 UTCJul 7, 18:55 UTC50m
2026-07-06 ASA814 - Jul 6, 22:35 UTCJul 7, 03:55 UTC5h 20m
2026-07-06 ASA819 PAE → HNL Jul 6, 15:05 UTCJul 6, 20:20 UTC5h 15m
2026-07-06 ASA820 - Jul 6, 07:55 UTCJul 6, 08:40 UTC45m
2026-07-06 ASA820 - Jul 6, 04:15 UTCJul 6, 04:30 UTC15m
2026-07-05 ASA807 - Jul 5, 23:00 UTCJul 5, 23:15 UTC15m
2026-07-05 ASA807 - Jul 5, 17:25 UTCJul 5, 18:50 UTC1h 25m
2026-07-05 ASA808 - Jul 5, 09:30 UTCJul 5, 14:25 UTC4h 55m
2026-07-05 ASA805 LAS → HNL Jul 5, 01:25 UTCJul 5, 07:15 UTC5h 50m
2026-07-04 ASA806 - Jul 4, 18:25 UTCJul 4, 23:20 UTC4h 55m
2026-07-03 ASA864 - Jul 3, 11:50 UTCJul 3, 12:30 UTC40m
2026-07-03 ASA863 - Jul 3, 00:00 UTCJul 3, 08:05 UTC8h 5m
2026-07-02 ASA835 SFO → PDX Jul 2, 15:30 UTCJul 2, 21:50 UTC6h 20m
2026-07-01 ASA836 ANC → OGG Jul 1, 21:25 UTCJul 2, 02:45 UTC5h 20m
2026-06-30 ASA819 PAE → HNL Jun 30, 20:15 UTCJun 30, 20:35 UTC20m
2026-06-30 ASA819 PAE → HNL Jun 30, 15:25 UTCJun 30, 16:10 UTC45m
2026-06-30 ASA820 - Jun 30, 00:35 UTCJun 30, 05:05 UTC4h 31m
2026-06-29 ASA815 - Jun 29, 22:19 UTCJun 29, 22:49 UTC30m
2026-06-29 ASA815 - Jun 29, 17:05 UTCJun 29, 17:45 UTC40m
2026-06-28 ASA816 - Jun 28, 23:04 UTCJun 29, 04:04 UTC5h 0m
2026-06-28 ASA819 PAE → HNL Jun 28, 15:05 UTCJun 28, 20:09 UTC5h 5m
2026-06-28 ASA820 - Jun 28, 04:29 UTCJun 28, 05:04 UTC35m
2026-06-28 ASA820 - Jun 28, 00:15 UTCJun 28, 00:25 UTC10m
2026-06-27 ASA815 - Jun 27, 21:19 UTCJun 27, 21:44 UTC25m
2026-06-27 ASA815 - Jun 27, 16:30 UTCJun 27, 17:09 UTC40m
2026-06-26 ASA816 - Jun 26, 23:00 UTCJun 27, 04:15 UTC5h 15m
2026-06-26 ASA811 SEA → HNL Jun 26, 20:40 UTCJun 26, 20:55 UTC15m
2026-06-26 ASA811 SEA → HNL Jun 26, 16:00 UTCJun 26, 16:30 UTC30m
2026-06-25 ASA812 - Jun 25, 22:45 UTCJun 26, 03:50 UTC5h 5m
2026-06-25 ASA819 PAE → HNL Jun 25, 15:04 UTCJun 25, 20:09 UTC5h 5m
2026-06-25 ASA820 - Jun 25, 00:35 UTCJun 25, 05:09 UTC4h 35m

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 3h ago.
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 ASA807, ASA819, ASA820, ASA803, ASA830.