Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AB4AF1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N827AW · AIRBUS A-319 · operated by US BANK NA TRUSTEE

Hex
AB4AF1
Octal
52645361
Decimal
11,225,841
Country
US
Tail
N827AW
Type
A319
No current signal · last broadcast 22d ago
Flights observed
373
Distinct callsigns
20
Country
US
Last broadcast
22d ago

Last known position

Most recent position reported by Mode-S AB4AF1.

Country allocation

The ICAO 24-bit address AB4AF1 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
AAL2632 American Airlines 9 2026-05-15
AAL2397 American Airlines 7 2026-06-14
AAL3116 American Airlines 6 2026-04-16
AAL1873 American Airlines 6 2026-06-08
AAL634 American Airlines 5 2026-04-16
AAL3130 American Airlines 5 2026-06-16
AAL2159 American Airlines 5 2026-06-04
AAL2102 American Airlines 5 2026-04-18
AAL1407 American Airlines 5 2026-05-28
AAL1022 American Airlines 5 2026-04-30
AAL1003 American Airlines 5 2026-05-17
AAL629 American Airlines 4 2026-05-30
AAL327 American Airlines 4 2026-05-03
AAL3076 American Airlines 4 2026-04-20
AAL2991 American Airlines 4 2026-05-02
AAL2980 American Airlines 4 2026-05-28
AAL2700 American Airlines 4 2026-06-11
AAL2454 American Airlines 4 2026-06-08
AAL2066 American Airlines 4 2026-05-14
AAL2061 - 4 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-21 AAL9787 - Jun 21, 19:09 UTCJun 21, 22:04 UTC2h 55m
2026-06-21 AAL1396 - Jun 21, 15:59 UTCJun 21, 16:39 UTC40m
2026-06-21 AAL1396 DFW → AUS Jun 21, 14:30 UTCJun 21, 15:05 UTC35m
2026-06-21 AAL2141 - Jun 21, 04:24 UTCJun 21, 06:29 UTC2h 5m
2026-06-20 AAL2141 - Jun 20, 23:14 UTCJun 21, 01:10 UTC1h 55m
2026-06-20 AAL1396 - Jun 20, 16:05 UTCJun 20, 16:44 UTC40m
2026-06-20 AAL1396 DFW → AUS Jun 20, 14:09 UTCJun 20, 14:44 UTC35m
2026-06-20 AAL2512 MIA → ORD Jun 20, 00:19 UTCJun 20, 00:59 UTC40m
2026-06-20 AAL2512 MIA → ORD Jun 20, 00:15 UTCJun 20, 00:56 UTC41m
2026-06-19 AAL2512 MIA → ORD Jun 19, 18:09 UTCJun 19, 18:54 UTC45m
2026-06-18 AAL3129 TUL → DFW Jun 18, 00:15 UTCJun 18, 01:05 UTC50m
2026-06-18 AAL3129 TUL → DFW Jun 18, 00:15 UTCJun 18, 01:01 UTC46m
2026-06-17 AAL3129 DFW → TUL Jun 17, 22:25 UTCJun 17, 23:05 UTC40m
2026-06-17 AAL3246 - Jun 17, 18:55 UTCJun 17, 20:40 UTC1h 45m
2026-06-17 AAL3246 DFW → TUS Jun 17, 15:55 UTCJun 17, 17:40 UTC1h 45m
2026-06-17 AAL2377 - Jun 17, 13:05 UTCJun 17, 13:50 UTC45m
2026-06-17 AAL2377 SAT → DFW Jun 17, 13:01 UTCJun 17, 13:48 UTC47m
2026-06-16 AAL3301 DCA → CLT Jun 16, 21:45 UTCJun 17, 01:05 UTC3h 20m
2026-06-16 AAL3301 DCA → CLT Jun 16, 21:41 UTCJun 17, 01:02 UTC3h 21m
2026-06-16 AAL3130 MSY → DCA Jun 16, 18:09 UTCJun 16, 19:45 UTC1h 35m
2026-06-16 AAL3130 MSY → DCA Jun 16, 15:30 UTCJun 16, 17:10 UTC1h 40m
2026-06-16 AAL2847 DFW → LGA Jun 16, 11:55 UTCJun 16, 13:19 UTC1h 25m
2026-06-16 AAL1247 DEN → PHL Jun 16, 02:29 UTCJun 16, 04:00 UTC1h 30m
2026-06-15 AAL2061 - Jun 15, 21:45 UTCJun 16, 00:00 UTC2h 15m
2026-06-15 AAL2061 - Jun 15, 18:10 UTCJun 15, 20:50 UTC2h 40m
2026-06-15 AAL2807 - Jun 15, 14:34 UTCJun 15, 16:35 UTC2h 0m
2026-06-15 AAL2807 - Jun 15, 11:19 UTCJun 15, 13:25 UTC2h 5m
2026-06-14 AAL2397 FLL → CLT Jun 14, 23:35 UTCJun 15, 00:55 UTC1h 20m
2026-06-14 AAL2397 FLL → CLT Jun 14, 23:34 UTCJun 15, 00:54 UTC1h 20m
2026-06-14 AAL2397 FLL → CLT Jun 14, 20:05 UTCJun 14, 21:45 UTC1h 40m
2026-06-14 AAL2445 BOS → MIA Jun 14, 16:30 UTCJun 14, 18:50 UTC2h 20m
2026-06-14 AAL2445 BOS → MIA Jun 14, 12:55 UTCJun 14, 15:35 UTC2h 40m
2026-06-14 AAL1008 ATL → DFW Jun 14, 10:25 UTCJun 14, 11:15 UTC50m
2026-06-14 AAL1664 MIA → AUS Jun 14, 02:10 UTCJun 14, 03:10 UTC1h 0m
2026-06-14 AAL1664 MIA → AUS Jun 14, 02:07 UTCJun 14, 03:08 UTC1h 1m
2026-06-13 AAL1925 JAX → CLT Jun 13, 21:35 UTCJun 14, 00:25 UTC2h 50m
2026-06-13 AAL1925 JAX → CLT Jun 13, 17:20 UTCJun 13, 20:25 UTC3h 5m
2026-06-13 AAL2774 AUS → PHL Jun 13, 12:45 UTCJun 13, 15:35 UTC2h 50m
2026-06-12 AAL1314 PSQ → AUS Jun 12, 22:20 UTCJun 13, 01:35 UTC3h 15m
2026-06-12 AAL621 CLT → EWR Jun 12, 18:30 UTCJun 12, 20:10 UTC1h 40m
2026-06-12 AAL621 CLT → EWR Jun 12, 15:15 UTCJun 12, 16:45 UTC1h 30m
2026-06-12 AAL2951 CLT → SFO Jun 12, 12:05 UTCJun 12, 13:10 UTC1h 5m
2026-06-12 AAL2951 CLT → SFO Jun 12, 12:02 UTCJun 12, 13:10 UTC1h 8m
2026-06-12 AAL1889 MCO → PHX Jun 12, 01:30 UTCJun 12, 02:20 UTC50m
2026-06-12 AAL1889 MCO → PHX Jun 12, 01:26 UTCJun 12, 02:24 UTC58m
2026-06-11 AAL2360 PHL → SAN Jun 11, 22:30 UTCJun 11, 23:30 UTC1h 0m
2026-06-11 AAL2360 PHL → SAN Jun 11, 22:27 UTCJun 11, 23:29 UTC1h 2m
2026-06-11 AAL2360 PHL → SAN Jun 11, 20:30 UTCJun 11, 21:25 UTC55m
2026-06-11 AAL2700 CHS → PHL Jun 11, 16:45 UTCJun 11, 19:00 UTC2h 15m
2026-06-11 AAL2700 CHS → PHL Jun 11, 13:15 UTCJun 11, 15:25 UTC2h 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 N827AW page for operator, model, and routing details .

Mode-S AB4AF1 frequently asked

What is Mode-S code AB4AF1?
AB4AF1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N827AW.
Where is Mode-S AB4AF1 registered?
Mode-S code AB4AF1 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 AB4AF1 broadcasting right now?
No active broadcast right now. Last signal was 22d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB4AF1, octal 52645361, decimal 11,225,841.
What flights does AB4AF1 operate?
Mode-S AB4AF1 has broadcast 20 distinct callsigns, including AAL2632, AAL2397, AAL3116, AAL1873, AAL634.