Apparatus

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sensors Mode-S transponder

A1D7EA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N218HA · AIRBUS A-321neo · operated by HAWAIIAN AIRLINES INC

Hex
A1D7EA
Octal
50353752
Decimal
10,606,570
Country
US
Tail
N218HA
Type
A21N
No current signal · last broadcast 57m ago
Flights observed
295
Distinct callsigns
20
Country
US
Last broadcast
57m ago

Last known position

Most recent position reported by Mode-S A1D7EA.

Country allocation

The ICAO 24-bit address A1D7EA 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
ASA965 - 15 2026-07-04
ASA870 - 15 2026-07-08
ASA869 - 14 2026-06-27
ASA966 - 12 2026-07-04
ASA868 Alaska Airlines 9 2026-06-09
ASA960 - 8 2026-07-03
ASA971 - 7 2026-07-08
ASA843 - 7 2026-06-23
ASA972 Alaska Airlines 6 2026-05-13
ASA968 - 6 2026-07-13
ASA963 - 6 2026-07-13
ASA959 Alaska Airlines 6 2026-05-12
ASA954 - 6 2026-07-09
ASA920 Alaska Airlines 6 2026-07-10
ASA862 Alaska Airlines 6 2026-06-07
ASA841 - 6 2026-07-11
ASA880 - 5 2026-07-07
ASA879 Alaska Airlines 5 2026-07-07
ASA878 Alaska Airlines 5 2026-06-04
ASA844 - 5 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASA964 - Jul 14, 22:00 UTCJul 14, 22:20 UTC20m
2026-07-14 ASA967 - Jul 14, 14:50 UTCJul 14, 19:45 UTC4h 55m
2026-07-13 ASA968 - Jul 13, 23:40 UTCJul 14, 04:30 UTC4h 50m
2026-07-13 ASA963 - Jul 13, 16:40 UTCJul 13, 21:50 UTC5h 10m
2026-07-12 ASA964 - Jul 12, 22:00 UTCJul 13, 03:15 UTC5h 15m
2026-07-12 ASA967 - Jul 12, 15:01 UTCJul 12, 19:45 UTC4h 45m
2026-07-12 ASA924 - Jul 12, 03:30 UTCJul 12, 04:10 UTC40m
2026-07-11 ASA979 - Jul 11, 21:20 UTCJul 11, 21:30 UTC10m
2026-07-11 ASA979 - Jul 11, 16:40 UTCJul 11, 17:10 UTC30m
2026-07-11 ASA842 - Jul 11, 13:45 UTCJul 11, 14:20 UTC35m
2026-07-11 ASA842 - Jul 11, 09:40 UTCJul 11, 10:00 UTC20m
2026-07-11 ASA841 - Jul 11, 05:55 UTCJul 11, 06:10 UTC15m
2026-07-11 ASA841 - Jul 11, 00:45 UTCJul 11, 01:40 UTC55m
2026-07-10 ASA840 - Jul 10, 22:10 UTCJul 10, 22:55 UTC45m
2026-07-10 ASA854 - Jul 10, 09:30 UTCJul 10, 09:45 UTC15m
2026-07-10 ASA854 - Jul 10, 04:35 UTCJul 10, 05:10 UTC35m
2026-07-10 ASA920 RDU → SEA Jul 10, 01:40 UTCJul 10, 02:20 UTC40m
2026-07-09 ASA920 RDU → SEA Jul 9, 21:30 UTCJul 9, 21:40 UTC10m
2026-07-09 ASA922 - Jul 9, 19:30 UTCJul 9, 19:50 UTC20m
2026-07-09 ASA922 - Jul 9, 14:40 UTCJul 9, 15:30 UTC50m
2026-07-09 ASA954 - Jul 9, 02:10 UTCJul 9, 02:50 UTC40m
2026-07-08 ASA971 - Jul 8, 15:25 UTCJul 8, 16:00 UTC35m
2026-07-08 ASA870 - Jul 8, 02:55 UTCJul 8, 03:30 UTC35m
2026-07-07 ASA870 - Jul 7, 22:45 UTCJul 7, 23:05 UTC20m
2026-07-07 ASA879 SFO → OGG Jul 7, 15:45 UTCJul 7, 20:50 UTC5h 5m
2026-07-07 ASA880 - Jul 7, 12:35 UTCJul 7, 13:25 UTC50m
2026-07-07 ASA880 - Jul 7, 08:10 UTCJul 7, 08:30 UTC20m
2026-07-07 ASA894 KOA → SAN Jul 7, 01:15 UTCJul 7, 06:35 UTC5h 20m
2026-07-06 ASA892 HNL → SAN Jul 6, 22:25 UTCJul 6, 23:20 UTC55m
2026-07-06 ASA892 HNL → SAN Jul 6, 18:15 UTCJul 6, 18:35 UTC20m
2026-07-06 ASA855 SEA → SJC Jul 6, 09:20 UTCJul 6, 09:35 UTC15m
2026-07-06 ASA855 SEA → SJC Jul 6, 04:05 UTCJul 6, 04:55 UTC50m
2026-07-06 ASA839 SEA → LIH Jul 6, 01:05 UTCJul 6, 02:05 UTC1h 0m
2026-07-05 ASA839 SEA → LIH Jul 5, 20:25 UTCJul 5, 20:40 UTC15m
2026-07-05 ASA854 - Jul 5, 04:10 UTCJul 5, 09:55 UTC5h 45m
2026-07-05 ASA920 RDU → SEA Jul 5, 01:30 UTCJul 5, 02:05 UTC35m
2026-07-04 ASA920 RDU → SEA Jul 4, 21:20 UTCJul 4, 21:30 UTC10m
2026-07-04 ASA965 HNM → KOA Jul 4, 19:30 UTCJul 4, 19:45 UTC15m
2026-07-04 ASA965 - Jul 4, 14:40 UTCJul 4, 15:20 UTC40m
2026-07-04 ASA966 - Jul 4, 01:10 UTCJul 4, 01:50 UTC40m
2026-07-03 ASA965 - Jul 3, 14:15 UTCJul 3, 14:55 UTC40m
2026-07-03 ASA960 - Jul 3, 02:10 UTCJul 3, 02:50 UTC40m
2026-07-02 ASA931 - Jul 2, 15:05 UTCJul 2, 16:20 UTC1h 15m
2026-07-02 ASA932 - Jul 2, 02:10 UTCJul 2, 03:10 UTC1h 0m
2026-07-01 ASA931 - Jul 1, 14:45 UTCJul 1, 16:10 UTC1h 25m
2026-07-01 ASA932 - Jul 1, 00:55 UTCJul 1, 02:00 UTC1h 5m
2026-06-30 ASA971 - Jun 30, 06:15 UTCJun 30, 06:45 UTC30m
2026-06-29 ASA870 - Jun 29, 22:39 UTCJun 30, 03:30 UTC4h 51m
2026-06-29 ASA879 SFO → OGG Jun 29, 19:54 UTCJun 29, 20:19 UTC25m
2026-06-29 ASA879 SFO → OGG Jun 29, 15:00 UTCJun 29, 15:45 UTC45m

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 N218HA page for operator, model, and routing details .

Mode-S A1D7EA frequently asked

What is Mode-S code A1D7EA?
A1D7EA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N218HA.
Where is Mode-S A1D7EA registered?
Mode-S code A1D7EA 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 A1D7EA broadcasting right now?
No active broadcast right now. Last signal was 57m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1D7EA, octal 50353752, decimal 10,606,570.
What flights does A1D7EA operate?
Mode-S A1D7EA has broadcast 20 distinct callsigns, including ASA965, ASA870, ASA869, ASA966, ASA868.