Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A1ECD6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N223HA · AIRBUS A-321neo · operated by HAWAIIAN AIRLINES INC

Hex
A1ECD6
Octal
50366326
Decimal
10,611,926
Country
US
Tail
N223HA
Type
A21N
No current signal · last broadcast 3h ago
Flights observed
246
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A1ECD6.

Country allocation

The ICAO 24-bit address A1ECD6 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
ASA966 - 13 2026-06-14
ASA965 Alaska Airlines 13 2026-06-05
ASA959 - 12 2026-07-12
ASA953 - 10 2026-07-13
ASA972 - 8 2026-06-23
ASA960 - 8 2026-07-12
ASA932 - 8 2026-07-14
ASA825 - 8 2026-07-09
ASA954 - 7 2026-07-13
ASA869 - 7 2026-06-23
ASA867 Alaska Airlines 7 2026-06-08
ASA842 - 7 2026-07-03
ASA967 - 6 2026-07-08
ASA931 - 6 2026-07-11
ASA843 - 6 2026-07-03
ASA971 - 5 2026-06-19
ASA968 - 5 2026-07-06
ASA924 - 5 2026-07-08
ASA868 Alaska Airlines 5 2026-06-07
ASA862 Alaska Airlines 5 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASA932 - Jul 14, 01:20 UTCJul 14, 02:15 UTC55m
2026-07-13 ASA953 - Jul 13, 14:00 UTCJul 13, 14:40 UTC40m
2026-07-13 ASA954 - Jul 13, 02:10 UTCJul 13, 03:10 UTC1h 0m
2026-07-12 ASA959 - Jul 12, 15:40 UTCJul 12, 16:20 UTC40m
2026-07-12 ASA960 - Jul 12, 02:15 UTCJul 12, 02:55 UTC40m
2026-07-11 ASA931 - Jul 11, 14:20 UTCJul 11, 15:25 UTC1h 5m
2026-07-11 ASA932 - Jul 11, 01:20 UTCJul 11, 02:20 UTC1h 0m
2026-07-10 ASA953 - Jul 10, 14:35 UTCJul 10, 15:20 UTC45m
2026-07-10 ASA921 - Jul 10, 03:55 UTCJul 10, 04:35 UTC40m
2026-07-10 ASA921 - Jul 10, 00:00 UTCJul 10, 00:15 UTC15m
2026-07-09 ASA825 - Jul 9, 21:40 UTCJul 9, 21:55 UTC15m
2026-07-09 ASA825 - Jul 9, 16:40 UTCJul 9, 17:05 UTC25m
2026-07-08 ASA964 - Jul 8, 21:55 UTCJul 9, 02:50 UTC4h 55m
2026-07-08 ASA967 - Jul 8, 15:00 UTCJul 8, 19:55 UTC4h 55m
2026-07-08 ASA924 - Jul 8, 03:30 UTCJul 8, 04:15 UTC45m
2026-07-07 ASA9939 - Jul 7, 21:45 UTCJul 7, 22:05 UTC20m
2026-07-07 ASA967 - Jul 7, 04:45 UTCJul 7, 05:15 UTC30m
2026-07-06 ASA968 - Jul 6, 00:00 UTCJul 6, 04:35 UTC4h 35m
2026-07-05 ASA963 - Jul 5, 16:40 UTCJul 5, 17:15 UTC35m
2026-07-04 ASA964 - Jul 4, 21:50 UTCJul 5, 02:25 UTC4h 35m
2026-07-04 ASA967 - Jul 4, 14:55 UTCJul 4, 15:25 UTC30m
2026-07-03 ASA924 - Jul 3, 16:55 UTCJul 4, 03:55 UTC11h 0m
2026-07-03 ASA842 - Jul 3, 09:45 UTCJul 3, 14:15 UTC4h 30m
2026-07-03 ASA843 - Jul 3, 03:10 UTCJul 3, 08:05 UTC4h 55m
2026-07-03 ASA978 SEA → FAT Jul 3, 00:45 UTCJul 3, 01:20 UTC35m
2026-07-02 ASA923 - Jul 2, 14:10 UTCJul 2, 14:45 UTC35m
2026-07-02 ASA968 - Jul 2, 03:50 UTCJul 2, 04:30 UTC40m
2026-07-02 ASA968 - Jul 2, 00:00 UTCJul 2, 00:10 UTC10m
2026-07-01 ASA963 - Jul 1, 16:45 UTCJul 1, 22:00 UTC5h 15m
2026-07-01 ASA920 RDU → SEA Jul 1, 01:45 UTCJul 1, 02:25 UTC40m
2026-06-30 ASA920 RDU → SEA Jun 30, 21:30 UTCJun 30, 21:45 UTC15m
2026-06-30 ASA922 - Jun 30, 19:30 UTCJun 30, 19:50 UTC20m
2026-06-30 ASA922 - Jun 30, 14:45 UTCJun 30, 15:15 UTC30m
2026-06-29 ASA955 SJC → LAX Jun 29, 14:14 UTCJun 30, 01:55 UTC11h 41m
2026-06-29 ASA921 - Jun 29, 02:54 UTCJun 29, 03:39 UTC45m
2026-06-28 ASA921 - Jun 28, 22:59 UTCJun 28, 23:09 UTC10m
2026-06-28 ASA825 - Jun 28, 21:24 UTCJun 28, 21:30 UTC5m
2026-06-28 ASA825 - Jun 28, 16:39 UTCJun 28, 17:10 UTC30m
2026-06-28 ASA845 SEA → GEG Jun 28, 04:15 UTCJun 28, 04:59 UTC45m
2026-06-27 ASA979 FAT → SEA Jun 27, 16:44 UTCJun 27, 17:14 UTC30m
2026-06-27 ASA842 - Jun 27, 14:25 UTCJun 27, 15:00 UTC35m
2026-06-27 ASA842 - Jun 27, 10:05 UTCJun 27, 10:25 UTC20m
2026-06-27 ASA843 - Jun 27, 07:55 UTCJun 27, 08:25 UTC30m
2026-06-27 ASA843 - Jun 27, 03:30 UTCJun 27, 04:00 UTC30m
2026-06-27 ASA978 SEA → FAT Jun 27, 00:39 UTCJun 27, 01:24 UTC45m
2026-06-26 ASA923 - Jun 26, 14:05 UTCJun 26, 14:39 UTC35m
2026-06-25 ASA924 SFO → OAK Jun 25, 16:39 UTCJun 26, 04:20 UTC11h 40m
2026-06-25 ASA842 - Jun 25, 14:04 UTCJun 25, 14:44 UTC40m
2026-06-25 ASA842 - Jun 25, 10:04 UTCJun 25, 10:25 UTC20m
2026-06-24 ASA855 SEA → SJC Jun 24, 10:45 UTCJun 24, 10:55 UTC10m

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 N223HA page for operator, model, and routing details .

Mode-S A1ECD6 frequently asked

What is Mode-S code A1ECD6?
A1ECD6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N223HA.
Where is Mode-S A1ECD6 registered?
Mode-S code A1ECD6 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 A1ECD6 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 A1ECD6, octal 50366326, decimal 10,611,926.
What flights does A1ECD6 operate?
Mode-S A1ECD6 has broadcast 20 distinct callsigns, including ASA966, ASA965, ASA959, ASA953, ASA972.