Apparatus

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sensors Mode-S transponder

A1FB1A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N227AZ · BOEING 767-300 · operated by CARGO AIRCRAFT MANAGEMENT INC

Hex
A1FB1A
Octal
50375432
Decimal
10,615,578
Country
US
Tail
N227AZ
Type
B763
Broadcasting now · callsign ATN3374 · 7,850 ft
Flights observed
256
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

A1FB1A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1FB1A 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
ATN3313 - 7 2026-07-09
ATN3369 - 6 2026-07-08
ATN3361 Air Transport International 6 2026-07-21
ATN3349 - 6 2026-07-08
ATN3331 - 6 2026-07-11
ATN3320 - 6 2026-07-20
ATN3307 - 6 2026-07-09
ATN3371 - 5 2026-07-09
ATN3352 Air Transport International 5 2026-07-20
ATN3348 - 5 2026-07-11
ATN3315 - 5 2026-06-16
ATN3309 Air Transport International 5 2026-07-21
ATN3374 Air Transport International 4 2026-07-25
ATN3373 - 4 2026-06-28
ATN3357 Air Transport International 4 2026-07-23
ATN3344 - 4 2026-06-23
ATN3336 Air Transport International 4 2026-05-23
ATN3323 - 4 2026-07-10
ATN3316 - 4 2026-06-18
ATN3310 - 4 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 ATN3374 CVG → ABE Jul 25, 04:10 UTCJul 25, 04:30 UTC20m
2026-07-24 ATN3301 ILN → SFO Jul 24, 23:15 UTCJul 25, 01:25 UTC2h 10m
2026-07-24 ATN3370 ILN → ABE Jul 24, 14:55 UTCJul 24, 16:55 UTC2h 0m
2026-07-24 ATN3393 ONT → BWI Jul 24, 10:00 UTCJul 24, 11:50 UTC1h 50m
2026-07-24 ATN3364 ILN → SEA Jul 24, 02:10 UTCJul 24, 05:45 UTC3h 35m
2026-07-23 ATN3324 SBD → SEA Jul 23, 22:00 UTCJul 23, 23:45 UTC1h 45m
2026-07-23 ATN3357 SFO → CVG Jul 23, 18:50 UTCJul 23, 19:55 UTC1h 5m
2026-07-23 ATN3375 SMF → HNL Jul 23, 07:55 UTCJul 23, 08:50 UTC55m
2026-07-22 ATN3322 CLT → SBD Jul 22, 20:20 UTCJul 23, 00:25 UTC4h 5m
2026-07-22 ATN6742 PDX → SBD Jul 22, 12:25 UTCJul 22, 14:30 UTC2h 5m
2026-07-21 ATN3326 SEA → SBD Jul 21, 22:25 UTCJul 21, 23:40 UTC1h 15m
2026-07-21 ATN3361 IAH → BWI Jul 21, 08:55 UTCJul 21, 11:45 UTC2h 50m
2026-07-21 ATN3309 SFO → AFW Jul 21, 02:05 UTCJul 21, 04:35 UTC2h 30m
2026-07-20 ATN3352 RIC → ILN Jul 20, 21:50 UTCJul 20, 23:35 UTC1h 45m
2026-07-20 ATN3320 - Jul 20, 17:45 UTCJul 20, 19:05 UTC1h 20m
2026-07-20 ATN3361 IAH → BWI Jul 20, 08:55 UTCJul 20, 11:45 UTC2h 50m
2026-07-20 ATN3309 - Jul 20, 01:45 UTCJul 20, 04:20 UTC2h 35m
2026-07-19 ATN3352 RIC → ILN Jul 19, 21:05 UTCJul 19, 22:35 UTC1h 30m
2026-07-19 ATN3320 - Jul 19, 16:00 UTCJul 19, 17:20 UTC1h 20m
2026-07-19 ATN3361 IAH → BWI Jul 19, 09:05 UTCJul 19, 11:40 UTC2h 35m
2026-07-19 ATN3374 - Jul 19, 04:35 UTCJul 19, 06:25 UTC1h 50m
2026-07-18 ATN3301 ILN → SFO Jul 18, 23:25 UTCJul 19, 01:20 UTC1h 55m
2026-07-18 ATN3393 ONT → BWI Jul 18, 14:40 UTCJul 18, 16:35 UTC1h 55m
2026-07-18 ATN3393 ONT → BWI Jul 18, 09:40 UTCJul 18, 11:40 UTC2h 0m
2026-07-18 ATN6764 BWI → CVG Jul 18, 04:55 UTCJul 18, 08:15 UTC3h 20m
2026-07-18 ATN6763 CVG → SEA Jul 18, 00:35 UTCJul 18, 02:45 UTC2h 10m
2026-07-17 ATN3376 - Jul 17, 21:20 UTCJul 17, 23:10 UTC1h 50m
2026-07-17 ATN3306 JFK → RFD Jul 17, 01:09 UTCJul 17, 03:20 UTC2h 10m
2026-07-16 ATN3327 HAO → JFK Jul 16, 18:55 UTCJul 16, 20:19 UTC1h 25m
2026-07-16 ATN3312 - Jul 16, 05:55 UTCJul 16, 07:30 UTC1h 35m
2026-07-16 ATN3341 - Jul 16, 01:05 UTCJul 16, 03:35 UTC2h 30m
2026-07-15 ATN3386 - Jul 15, 19:20 UTCJul 15, 21:20 UTC2h 0m
2026-07-15 ATN3356 - Jul 15, 02:05 UTCJul 15, 03:20 UTC1h 15m
2026-07-14 ATN3394 - Jul 14, 17:05 UTCJul 14, 20:35 UTC3h 30m
2026-07-14 ATN3367 SMF → PHX Jul 14, 07:10 UTCJul 14, 08:45 UTC1h 35m
2026-07-14 ATN3318 PHX → SMF Jul 14, 00:45 UTCJul 14, 02:20 UTC1h 35m
2026-07-13 ATN3398 - Jul 13, 19:05 UTCJul 13, 22:10 UTC3h 5m
2026-07-13 ATN3311 DEN → CVG Jul 13, 10:10 UTCJul 13, 12:25 UTC2h 15m
2026-07-13 ATN3321 - Jul 13, 04:55 UTCJul 13, 07:15 UTC2h 20m
2026-07-12 ATN3346 - Jul 12, 13:55 UTCJul 12, 18:05 UTC4h 10m
2026-07-12 ATN3300 - Jul 12, 05:30 UTCJul 12, 08:30 UTC3h 0m
2026-07-12 ATN3353 - Jul 12, 00:15 UTCJul 12, 02:45 UTC2h 30m
2026-07-11 ATN3304 - Jul 11, 18:55 UTCJul 11, 21:20 UTC2h 25m
2026-07-11 ATN3348 ATL → AFW Jul 11, 08:25 UTCJul 11, 10:05 UTC1h 40m
2026-07-11 ATN3331 - Jul 11, 05:01 UTCJul 11, 06:01 UTC1h 0m
2026-07-10 ATN3323 - Jul 10, 15:25 UTCJul 10, 19:05 UTC3h 40m
2026-07-10 ATN3330 - Jul 10, 05:00 UTCJul 10, 09:05 UTC4h 5m
2026-07-09 ATN3323 - Jul 9, 15:10 UTCJul 9, 18:45 UTC3h 35m
2026-07-09 ATN3313 - Jul 9, 10:25 UTCJul 9, 11:15 UTC50m
2026-07-09 ATN3313 - Jul 9, 06:30 UTCJul 9, 06:40 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 N227AZ page for operator, model, and routing details .

Mode-S A1FB1A frequently asked

What is Mode-S code A1FB1A?
A1FB1A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N227AZ.
Where is Mode-S A1FB1A registered?
Mode-S code A1FB1A 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 A1FB1A broadcasting right now?
Yes. Mode-S A1FB1A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1FB1A, octal 50375432, decimal 10,615,578.
What flights does A1FB1A operate?
Mode-S A1FB1A has broadcast 20 distinct callsigns, including ATN3313, ATN3369, ATN3361, ATN3349, ATN3331.