Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A1FBB2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N227HA · AIRBUS A-321neo · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A1FBB2
Octal
50375662
Decimal
10,615,730
Country
US
Tail
N227HA
Type
A21N
Broadcasting now · callsign ASA855 · 225 ft
Flights observed
249
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Current position

A1FBB2 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1FBB2 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
ASA892 - 11 2026-07-10
ASA966 Alaska Airlines 10 2026-06-05
ASA870 - 10 2026-07-12
ASA869 - 9 2026-07-12
ASA965 Alaska Airlines 8 2026-06-04
ASA880 - 8 2026-07-11
ASA879 - 8 2026-07-11
ASA888 Alaska Airlines 6 2026-05-21
ASA867 Alaska Airlines 6 2026-06-07
ASA848 Alaska Airlines 6 2026-05-25
ASA826 Alaska Airlines 6 2026-05-24
ASA932 Alaska Airlines 5 2026-05-29
ASA931 Alaska Airlines 5 2026-05-29
ASA894 - 5 2026-07-11
ASA868 Alaska Airlines 5 2026-06-07
ASA827 Alaska Airlines 5 2026-04-16
ASA825 Alaska Airlines 5 2026-05-25
ASA1097 - 5 2026-06-29
ASA904 Alaska Airlines 4 2026-05-13
ASA843 - 4 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASA855 - Jul 14, 04:30 UTCJul 14, 05:20 UTC50m
2026-07-14 ASA839 - Jul 14, 01:20 UTCJul 14, 02:15 UTC55m
2026-07-13 ASA839 - Jul 13, 20:45 UTCJul 13, 21:05 UTC20m
2026-07-12 ASA869 - Jul 12, 14:10 UTCJul 12, 19:30 UTC5h 20m
2026-07-12 ASA870 - Jul 12, 02:55 UTCJul 12, 03:30 UTC35m
2026-07-11 ASA870 - Jul 11, 22:35 UTCJul 11, 22:55 UTC20m
2026-07-11 ASA879 - Jul 11, 20:10 UTCJul 11, 20:30 UTC20m
2026-07-11 ASA879 - Jul 11, 15:05 UTCJul 11, 16:00 UTC55m
2026-07-11 ASA880 - Jul 11, 12:30 UTCJul 11, 13:15 UTC45m
2026-07-11 ASA880 - Jul 11, 08:05 UTCJul 11, 08:20 UTC15m
2026-07-11 ASA894 - Jul 11, 00:50 UTCJul 11, 06:25 UTC5h 35m
2026-07-10 ASA892 - Jul 10, 22:15 UTCJul 10, 23:00 UTC45m
2026-07-10 ASA892 - Jul 10, 18:00 UTCJul 10, 18:20 UTC20m
2026-07-09 ASA869 - Jul 9, 19:25 UTCJul 9, 19:40 UTC15m
2026-07-09 ASA869 - Jul 9, 14:15 UTCJul 9, 14:50 UTC35m
2026-07-09 ASA972 - Jul 9, 02:40 UTCJul 9, 03:15 UTC35m
2026-07-08 ASA959 - Jul 8, 15:45 UTCJul 8, 16:30 UTC45m
2026-07-08 ASA960 - Jul 8, 02:45 UTCJul 8, 03:25 UTC40m
2026-07-07 ASA979 FAT → SEA Jul 7, 16:45 UTCJul 7, 17:30 UTC45m
2026-07-07 ASA842 - Jul 7, 13:40 UTCJul 7, 14:10 UTC30m
2026-07-07 ASA842 - Jul 7, 09:40 UTCJul 7, 09:55 UTC15m
2026-07-07 ASA843 - Jul 7, 07:40 UTCJul 7, 07:55 UTC15m
2026-07-07 ASA843 - Jul 7, 03:05 UTCJul 7, 03:35 UTC30m
2026-07-07 ASA978 SEA → FAT Jul 7, 00:30 UTCJul 7, 01:10 UTC40m
2026-07-06 ASA923 - Jul 6, 14:05 UTCJul 6, 14:35 UTC30m
2026-07-06 ASA924 - Jul 6, 03:25 UTCJul 6, 04:05 UTC40m
2026-07-05 ASA979 FAT → SEA Jul 5, 16:35 UTCJul 5, 17:05 UTC30m
2026-07-05 ASA842 - Jul 5, 13:35 UTCJul 5, 14:15 UTC40m
2026-07-05 ASA842 - Jul 5, 09:35 UTCJul 5, 09:50 UTC15m
2026-07-05 ASA896 - Jul 5, 03:20 UTCJul 5, 04:05 UTC45m
2026-07-04 ASA895 - Jul 4, 02:45 UTCJul 4, 03:25 UTC40m
2026-07-03 ASA879 SFO → OGG Jul 3, 20:10 UTCJul 3, 20:30 UTC20m
2026-07-03 ASA879 SFO → OGG Jul 3, 15:10 UTCJul 3, 15:55 UTC45m
2026-07-03 ASA884 - Jul 3, 02:50 UTCJul 3, 03:40 UTC50m
2026-07-02 ASA883 - Jul 2, 15:40 UTCJul 2, 16:25 UTC45m
2026-07-02 ASA880 - Jul 2, 12:45 UTCJul 2, 13:35 UTC50m
2026-07-02 ASA880 - Jul 2, 08:20 UTCJul 2, 08:35 UTC15m
2026-07-02 ASA894 KOA → SAN Jul 2, 00:50 UTCJul 2, 06:20 UTC5h 30m
2026-07-01 ASA892 HNL → SAN Jul 1, 22:15 UTCJul 1, 23:00 UTC45m
2026-07-01 ASA892 HNL → SAN Jul 1, 18:00 UTCJul 1, 18:15 UTC15m
2026-07-01 ASA1175 - Jul 1, 05:05 UTCJul 1, 05:30 UTC25m
2026-07-01 ASA1176 - Jul 1, 03:40 UTCJul 1, 03:55 UTC15m
2026-06-30 ASA1133 SFO → SEA Jun 30, 23:50 UTCJul 1, 00:10 UTC20m
2026-06-30 ASA1096 - Jun 30, 22:10 UTCJun 30, 22:25 UTC15m
2026-06-30 ASA1033 - Jun 30, 18:55 UTCJun 30, 19:05 UTC10m
2026-06-30 ASA1117 KOA → HNL Jun 30, 01:55 UTCJun 30, 02:25 UTC30m
2026-06-30 ASA1118 - Jun 30, 00:25 UTCJun 30, 00:55 UTC30m
2026-06-29 ASA1097 KOA → HNL Jun 29, 22:00 UTCJun 29, 22:35 UTC35m
2026-06-29 ASA1108 - Jun 29, 20:19 UTCJun 29, 20:49 UTC30m
2026-06-29 ASA1117 KOA → HNL Jun 29, 02:05 UTCJun 29, 02:35 UTC30m

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 N227HA page for operator, model, and routing details .

Mode-S A1FBB2 frequently asked

What is Mode-S code A1FBB2?
A1FBB2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N227HA.
Where is Mode-S A1FBB2 registered?
Mode-S code A1FBB2 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 A1FBB2 broadcasting right now?
Yes. Mode-S A1FBB2 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1FBB2, octal 50375662, decimal 10,615,730.
What flights does A1FBB2 operate?
Mode-S A1FBB2 has broadcast 20 distinct callsigns, including ASA892, ASA966, ASA870, ASA869, ASA965.