Apparatus

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sensors Mode-S transponder

A1FF69

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N228HA · AIRBUS A-321neo · operated by HAWAIIAN AIRLINES INC

Hex
A1FF69
Octal
50377551
Decimal
10,616,681
Country
US
Tail
N228HA
Type
A21N
No current signal · last broadcast Jul 26, 14:55 UTC
Flights observed
292
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 14:55 UTC

Last known position

Most recent position reported by Mode-S A1FF69.

Country allocation

The ICAO 24-bit address A1FF69 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
ASA825 Alaska Airlines 13 2026-07-19
ASA844 - 11 2026-07-12
ASA878 Alaska Airlines 9 2026-05-29
ASA931 Alaska Airlines 8 2026-07-22
ASA920 - 8 2026-07-16
ASA847 Alaska Airlines 8 2026-05-27
ASA845 Alaska Airlines 8 2026-07-18
ASA966 Alaska Airlines 7 2026-07-23
ASA964 Alaska Airlines 7 2026-05-26
ASA932 Alaska Airlines 7 2026-07-21
ASA869 Alaska Airlines 7 2026-07-25
ASA853 - 7 2026-07-18
ASA839 Alaska Airlines 7 2026-07-26
ASA967 Alaska Airlines 6 2026-05-25
ASA965 Alaska Airlines 6 2026-07-23
ASA959 Alaska Airlines 6 2026-07-24
ASA954 - 6 2026-06-27
ASA953 - 6 2026-07-03
ASA921 Alaska Airlines 6 2026-07-20
ASA898 Alaska Airlines 6 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA9288 HNL → SAN Jul 26, 14:35 UTCJul 26, 14:55 UTC20m
2026-07-26 ASA9288 HNL → SAN Jul 26, 09:15 UTCJul 26, 10:10 UTC55m
2026-07-26 ASA839 SEA → LIH Jul 26, 06:25 UTCJul 26, 07:20 UTC56m
2026-07-26 ASA839 SEA → LIH Jul 26, 02:20 UTCJul 26, 02:30 UTC10m
2026-07-25 ASA869 SJC → KOA Jul 25, 14:10 UTCJul 25, 19:25 UTC5h 15m
2026-07-25 ASA972 SEA → YYZ Jul 25, 02:55 UTCJul 25, 03:25 UTC30m
2026-07-24 ASA959 SEA → GEG Jul 24, 20:40 UTCJul 24, 20:55 UTC15m
2026-07-24 ASA959 SEA → GEG Jul 24, 15:45 UTCJul 24, 16:30 UTC45m
2026-07-23 ASA966 GEG → SEA Jul 23, 21:25 UTCJul 24, 01:55 UTC4h 30m
2026-07-23 ASA965 SEA → SFO Jul 23, 14:20 UTCJul 23, 19:35 UTC5h 15m
2026-07-23 ASA960 SEA → GEG Jul 23, 01:25 UTCJul 23, 02:15 UTC50m
2026-07-22 ASA931 RNO → SEA Jul 22, 20:15 UTCJul 22, 20:25 UTC10m
2026-07-22 ASA931 RNO → SEA Jul 22, 14:45 UTCJul 22, 15:45 UTC1h 0m
2026-07-21 ASA932 SEA → ABQ Jul 21, 14:05 UTCJul 22, 01:40 UTC11h 35m
2026-07-20 ASA956 PDX → SEA Jul 20, 21:10 UTCJul 21, 02:00 UTC4h 49m
2026-07-20 ASA955 - Jul 20, 14:15 UTCJul 20, 19:20 UTC5h 5m
2026-07-20 ASA921 PDX → FLL Jul 20, 03:15 UTCJul 20, 04:05 UTC50m
2026-07-19 ASA921 PDX → FLL Jul 19, 23:20 UTCJul 19, 23:40 UTC20m
2026-07-19 ASA825 SEA → OGG Jul 19, 21:35 UTCJul 19, 21:45 UTC10m
2026-07-19 ASA825 SEA → OGG Jul 19, 16:35 UTCJul 19, 17:10 UTC35m
2026-07-18 ASA845 SEA → GEG Jul 18, 17:25 UTCJul 19, 05:10 UTC11h 45m
2026-07-18 ASA853 - Jul 18, 14:35 UTCJul 18, 15:15 UTC40m
2026-07-18 ASA853 - Jul 18, 10:15 UTCJul 18, 10:35 UTC20m
2026-07-18 ASA894 KOA → SAN Jul 18, 06:35 UTCJul 18, 06:55 UTC20m
2026-07-18 ASA894 KOA → SAN Jul 18, 01:20 UTCJul 18, 01:54 UTC35m
2026-07-17 ASA892 - Jul 17, 22:35 UTCJul 17, 23:20 UTC45m
2026-07-17 ASA892 - Jul 17, 18:19 UTCJul 17, 18:40 UTC20m
2026-07-17 ASA855 - Jul 17, 09:25 UTCJul 17, 09:40 UTC15m
2026-07-17 ASA855 - Jul 17, 03:59 UTCJul 17, 04:54 UTC55m
2026-07-17 ASA839 - Jul 17, 00:55 UTCJul 17, 01:59 UTC1h 5m
2026-07-16 ASA839 - Jul 16, 20:35 UTCJul 16, 20:45 UTC10m
2026-07-16 ASA854 - Jul 16, 04:30 UTCJul 16, 09:55 UTC5h 25m
2026-07-16 ASA920 - Jul 16, 01:55 UTCJul 16, 02:30 UTC35m
2026-07-15 ASA920 - Jul 15, 21:45 UTCJul 15, 21:50 UTC5m
2026-07-15 ASA965 - Jul 15, 19:45 UTCJul 15, 20:00 UTC15m
2026-07-15 ASA965 - Jul 15, 14:55 UTCJul 15, 15:35 UTC40m
2026-07-14 ASA966 - Jul 14, 21:05 UTCJul 15, 01:50 UTC4h 44m
2026-07-14 ASA965 - Jul 14, 14:15 UTCJul 14, 19:15 UTC5h 0m
2026-07-14 ASA966 - Jul 14, 02:55 UTCJul 14, 03:45 UTC50m
2026-07-13 ASA966 - Jul 13, 22:55 UTCJul 13, 23:05 UTC10m
2026-07-13 ASA825 - Jul 13, 21:15 UTCJul 13, 21:25 UTC10m
2026-07-13 ASA825 - Jul 13, 16:25 UTCJul 13, 16:50 UTC25m
2026-07-13 ASA845 - Jul 13, 04:15 UTCJul 13, 04:55 UTC40m
2026-07-12 ASA844 - Jul 12, 17:30 UTCJul 12, 18:01 UTC30m
2026-07-12 ASA853 - Jul 12, 14:35 UTCJul 12, 15:10 UTC35m
2026-07-12 ASA853 - Jul 12, 10:05 UTCJul 12, 10:25 UTC20m
2026-07-12 ASA841 PDX → HNL Jul 12, 01:35 UTCJul 12, 06:55 UTC5h 20m
2026-07-11 ASA840 - Jul 11, 22:25 UTCJul 11, 23:10 UTC45m
2026-07-11 ASA840 - Jul 11, 17:55 UTCJul 11, 18:05 UTC10m
2026-07-11 ASA854 - Jul 11, 06:45 UTCJul 11, 11:55 UTC5h 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 N228HA page for operator, model, and routing details .

Mode-S A1FF69 frequently asked

What is Mode-S code A1FF69?
A1FF69 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N228HA.
Where is Mode-S A1FF69 registered?
Mode-S code A1FF69 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 A1FF69 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1FF69, octal 50377551, decimal 10,616,681.
What flights does A1FF69 operate?
Mode-S A1FF69 has broadcast 20 distinct callsigns, including ASA825, ASA844, ASA878, ASA931, ASA920.