Apparatus

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sensors Mode-S transponder

A8BF73

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N663AW · AIRBUS A-320 · operated by US BANK NA TRUSTEE

Hex
A8BF73
Octal
52137563
Decimal
11,059,059
Country
US
Tail
N663AW
Type
A320
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
613
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S A8BF73.

Country allocation

The ICAO 24-bit address A8BF73 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
AAL1763 American Airlines 14 2026-07-24
AAL2437 American Airlines 11 2026-05-10
AAL2415 - 11 2026-06-19
AAL1689 American Airlines 10 2026-07-21
AAL2104 - 9 2026-06-28
AAL2062 - 9 2026-06-13
AAL1895 - 8 2026-06-24
AAL1506 - 8 2026-06-26
AAL555 American Airlines 7 2026-06-14
AAL544 American Airlines 7 2026-06-13
AAL3305 American Airlines 7 2026-06-13
AAL2953 - 7 2026-06-30
AAL2498 - 7 2026-06-26
AAL2281 American Airlines 7 2026-06-09
AAL2273 - 7 2026-06-26
AAL2136 - 7 2026-07-13
AAL1991 - 7 2026-06-23
AAL840 - 6 2026-06-28
AAL768 - 6 2026-06-26
AAL3134 American Airlines 6 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1891 PHL → CLE Jul 26, 22:00 UTCJul 26, 22:45 UTC45m
2026-07-26 AAL1891 PHL → CLE Jul 26, 19:20 UTCJul 26, 20:50 UTC1h 30m
2026-07-26 AAL2336 CLE → DFW Jul 26, 16:15 UTCJul 26, 17:50 UTC1h 35m
2026-07-26 AAL2336 CLE → DFW Jul 26, 13:10 UTCJul 26, 14:40 UTC1h 30m
2026-07-26 AAL1581 CLT → LGA Jul 26, 10:30 UTCJul 26, 11:30 UTC1h 0m
2026-07-26 AAL1269 PBI → ORD Jul 26, 03:55 UTCJul 26, 04:55 UTC1h 0m
2026-07-26 AAL1269 PBI → ORD Jul 26, 03:54 UTCJul 26, 04:49 UTC55m
2026-07-26 AAL1661 CLT → IAH Jul 26, 01:35 UTCJul 26, 02:45 UTC1h 10m
2026-07-26 AAL1661 CLT → IAH Jul 26, 01:32 UTCJul 26, 02:43 UTC1h 11m
2026-07-25 AAL2018 SFO → PHX Jul 25, 19:55 UTCJul 26, 00:00 UTC4h 5m
2026-07-25 AAL2018 SFO → PHX Jul 25, 19:50 UTCJul 26, 00:00 UTC4h 10m
2026-07-25 AAL2018 SFO → PHX Jul 25, 12:45 UTCJul 25, 17:20 UTC4h 35m
2026-07-24 AAL2879 DCA → LGA Jul 24, 22:45 UTCJul 24, 23:45 UTC1h 0m
2026-07-24 AAL1763 DFW → IAH Jul 24, 18:55 UTCJul 24, 20:40 UTC1h 45m
2026-07-24 AAL1763 DFW → IAH Jul 24, 15:45 UTCJul 24, 17:40 UTC1h 55m
2026-07-24 AAL2854 DSM → CLT Jul 24, 12:10 UTCJul 24, 14:05 UTC1h 55m
2026-07-24 AAL2854 DSM → CLT Jul 24, 12:09 UTCJul 24, 13:58 UTC1h 49m
2026-07-24 AAL568 ROC → CLT Jul 24, 02:25 UTCJul 24, 04:50 UTC2h 25m
2026-07-23 AAL3069 JAX → CLT Jul 23, 17:50 UTCJul 23, 23:20 UTC5h 30m
2026-07-23 AAL634 PHX → ONT Jul 23, 13:10 UTCJul 23, 16:10 UTC3h 0m
2026-07-22 AAL1835 PHX → SFO Jul 22, 23:25 UTCJul 23, 02:15 UTC2h 50m
2026-07-22 AAL3233 - Jul 22, 19:45 UTCJul 22, 22:00 UTC2h 15m
2026-07-22 AAL3233 - Jul 22, 16:05 UTCJul 22, 18:10 UTC2h 5m
2026-07-22 AAL2622 HDN → DFW Jul 22, 12:55 UTCJul 22, 13:25 UTC30m
2026-07-22 AAL2333 PHX → EWR Jul 22, 04:35 UTCJul 22, 05:10 UTC35m
2026-07-22 AAL2333 PHX → EWR Jul 22, 03:00 UTCJul 22, 03:30 UTC30m
2026-07-21 AAL1689 DFW → PHX Jul 21, 22:15 UTCJul 22, 02:00 UTC3h 45m
2026-07-21 AAL1689 DFW → PHX Jul 21, 16:50 UTCJul 21, 20:10 UTC3h 20m
2026-07-21 AAL1560 SBP → PHX Jul 21, 13:35 UTCJul 21, 14:55 UTC1h 20m
2026-07-21 AAL1560 SBP → PHX Jul 21, 13:34 UTCJul 21, 14:50 UTC1h 16m
2026-07-21 AAL3150 PHX → SBP Jul 21, 08:25 UTCJul 21, 09:35 UTC1h 10m
2026-07-21 AAL2288 MIA → PHL Jul 21, 06:40 UTCJul 21, 07:20 UTC40m
2026-07-21 AAL2288 MIA → PHL Jul 21, 06:21 UTCJul 21, 07:24 UTC1h 3m
2026-07-21 AAL2288 MIA → PHL Jul 21, 01:10 UTCJul 21, 04:50 UTC3h 40m
2026-07-20 AAL2288 MIA → PHL Jul 20, 21:50 UTCJul 21, 00:00 UTC2h 9m
2026-07-20 AAL1757 PHL → MSY Jul 20, 19:20 UTCJul 20, 20:40 UTC1h 20m
2026-07-20 AAL1757 PHL → MSY Jul 20, 16:10 UTCJul 20, 17:30 UTC1h 20m
2026-07-20 AAL1351 IND → PHL Jul 20, 01:20 UTCJul 20, 02:25 UTC1h 5m
2026-07-19 AAL1351 IND → PHL Jul 19, 23:25 UTCJul 20, 00:20 UTC55m
2026-07-19 AAL2516 MBJ → ORD Jul 19, 19:35 UTCJul 19, 22:05 UTC2h 30m
2026-07-19 AAL2516 MBJ → ORD Jul 19, 15:55 UTCJul 19, 18:25 UTC2h 30m
2026-07-19 AAL987 ABQ → PHX Jul 19, 12:15 UTCJul 19, 13:05 UTC50m
2026-07-19 AAL3159 SGU → PHX Jul 19, 05:00 UTCJul 19, 05:45 UTC45m
2026-07-18 AAL1689 - Jul 18, 22:15 UTCJul 19, 01:45 UTC3h 30m
2026-07-18 AAL1689 - Jul 18, 17:35 UTCJul 18, 21:05 UTC3h 30m
2026-07-18 AAL634 MSN → PHX Jul 18, 13:06 UTCJul 18, 16:17 UTC3h 11m
2026-07-18 AAL1835 PHX → MSN Jul 18, 03:15 UTCJul 18, 06:15 UTC3h 0m
2026-07-17 AAL1689 - Jul 17, 22:20 UTCJul 18, 02:14 UTC3h 55m
2026-07-17 AAL1689 - Jul 17, 16:29 UTCJul 17, 20:04 UTC3h 35m
2026-07-16 AAL1689 - Jul 16, 22:05 UTCJul 17, 01:35 UTC3h 30m

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 N663AW page for operator, model, and routing details .

Mode-S A8BF73 frequently asked

What is Mode-S code A8BF73?
A8BF73 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N663AW.
Where is Mode-S A8BF73 registered?
Mode-S code A8BF73 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 A8BF73 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8BF73, octal 52137563, decimal 11,059,059.
What flights does A8BF73 operate?
Mode-S A8BF73 has broadcast 20 distinct callsigns, including AAL1763, AAL2437, AAL2415, AAL1689, AAL2104.