Apparatus

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sensors Mode-S transponder

ADB656

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N983AN · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
ADB656
Octal
53333126
Decimal
11,384,406
Country
US
Tail
N983AN
Type
B738
No current signal · last broadcast 1h ago
Flights observed
497
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S ADB656.

Country allocation

The ICAO 24-bit address ADB656 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
AAL2045 American Airlines 7 2026-05-17
AAL903 - 6 2026-07-11
AAL392 - 6 2026-06-16
AAL2918 American Airlines 6 2026-04-17
AAL1013 American Airlines 6 2026-06-05
AAL994 American Airlines 4 2026-05-09
AAL893 - 4 2026-06-26
AAL479 American Airlines 4 2026-04-26
AAL2769 - 4 2026-06-25
AAL2627 American Airlines 4 2026-05-31
AAL2176 American Airlines 4 2026-04-16
AAL1938 - 4 2026-07-02
AAL1615 American Airlines 4 2026-04-16
AAL1158 - 4 2026-06-25
AAL972R American Airlines 3 2026-05-14
AAL3192 - 3 2026-06-30
AAL3114 American Airlines 3 2026-06-09
AAL3079 American Airlines 3 2026-04-18
AAL3078 - 3 2026-07-03
AAL2973 American Airlines 3 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL2357 - Jul 14, 03:55 UTCJul 14, 06:10 UTC2h 15m
2026-07-13 AAL3186 LAS → PHX Jul 13, 23:40 UTCJul 14, 00:25 UTC45m
2026-07-13 AAL2877 - Jul 13, 19:05 UTCJul 13, 22:05 UTC3h 0m
2026-07-13 AAL489 DCA → ORD Jul 13, 15:45 UTCJul 13, 17:10 UTC1h 25m
2026-07-13 AAL489 DCA → ORD Jul 13, 15:40 UTCJul 13, 17:05 UTC1h 25m
2026-07-13 AAL1299 - Jul 13, 12:20 UTCJul 13, 14:25 UTC2h 5m
2026-07-13 AAL1299 MIA → DCA Jul 13, 12:17 UTCJul 13, 14:26 UTC2h 9m
2026-07-12 AAL2111 - Jul 12, 23:15 UTCJul 13, 01:40 UTC2h 25m
2026-07-12 AAL869 - Jul 12, 18:45 UTCJul 12, 20:55 UTC2h 10m
2026-07-12 AAL868 - Jul 12, 15:01 UTCJul 12, 17:15 UTC2h 15m
2026-07-11 AAL903 - Jul 11, 22:30 UTCJul 11, 23:20 UTC50m
2026-07-11 AAL903 - Jul 11, 20:00 UTCJul 11, 20:10 UTC10m
2026-07-11 AAL903 SJU → PHL Jul 11, 19:56 UTCJul 11, 23:15 UTC3h 19m
2026-07-11 AAL903 - Jul 11, 18:15 UTCJul 11, 18:30 UTC15m
2026-07-11 AAL903 - Jul 11, 14:20 UTCJul 11, 16:35 UTC2h 15m
2026-07-11 AAL903 PHL → PHL Jul 11, 14:10 UTCJul 11, 14:15 UTC5m
2026-07-11 AAL1806 - Jul 11, 10:00 UTCJul 11, 12:05 UTC2h 5m
2026-07-10 AAL1837 PHX → TPA Jul 10, 23:20 UTCJul 11, 03:10 UTC3h 50m
2026-07-10 AAL1466 LAS → PHX Jul 10, 21:25 UTCJul 10, 22:10 UTC45m
2026-07-10 AAL1466 LAS → PHX Jul 10, 21:25 UTCJul 10, 22:09 UTC44m
2026-07-10 AAL2016 - Jul 10, 16:45 UTCJul 10, 20:00 UTC3h 15m
2026-07-10 AAL589 LGA → ORD Jul 10, 13:09 UTCJul 10, 15:00 UTC1h 51m
2026-07-10 AAL589 LGA → ORD Jul 10, 13:10 UTCJul 10, 15:25 UTC2h 15m
2026-07-09 AAL610 DFW → LGA Jul 9, 21:15 UTCJul 10, 00:15 UTC3h 0m
2026-07-09 AAL610 DFW → LGA Jul 9, 21:12 UTCJul 10, 00:14 UTC3h 2m
2026-07-09 AAL1107 - Jul 9, 17:15 UTCJul 9, 19:45 UTC2h 30m
2026-07-09 AAL1104 - Jul 9, 02:35 UTCJul 9, 05:20 UTC2h 45m
2026-07-09 AAL1104 DFW → BOI Jul 9, 02:30 UTCJul 9, 05:16 UTC2h 46m
2026-07-08 AAL2598 DFW → DFW Jul 8, 18:35 UTCJul 9, 00:25 UTC5h 50m
2026-07-08 AAL1948 - Jul 8, 15:25 UTCJul 8, 17:05 UTC1h 40m
2026-07-08 AAL1948 - Jul 8, 12:10 UTCJul 8, 14:00 UTC1h 50m
2026-07-07 AAL310 BDL → CLT Jul 7, 22:10 UTCJul 8, 00:10 UTC2h 0m
2026-07-07 AAL310 BDL → CLT Jul 7, 18:45 UTCJul 7, 20:50 UTC2h 5m
2026-07-07 AAL1618 DCA → DFW Jul 7, 14:10 UTCJul 7, 16:50 UTC2h 40m
2026-07-07 AAL1618 DFW → DCA Jul 7, 10:15 UTCJul 7, 12:45 UTC2h 30m
2026-07-06 AAL380 - Jul 6, 20:55 UTCJul 7, 00:00 UTC3h 5m
2026-07-06 AAL937 - Jul 6, 16:45 UTCJul 6, 19:25 UTC2h 40m
2026-07-06 AAL1107 - Jul 6, 12:30 UTCJul 6, 15:05 UTC2h 35m
2026-07-06 AAL1104 - Jul 6, 04:00 UTCJul 6, 06:45 UTC2h 45m
2026-07-06 AAL1728 - Jul 6, 01:00 UTCJul 6, 02:45 UTC1h 45m
2026-07-05 AAL1728 - Jul 5, 21:50 UTCJul 5, 23:40 UTC1h 50m
2026-07-05 AAL3307 - Jul 5, 18:15 UTCJul 5, 20:30 UTC2h 15m
2026-07-05 AAL1710 - Jul 5, 15:15 UTCJul 5, 17:05 UTC1h 50m
2026-07-05 AAL2150 MSP → DFW Jul 5, 11:10 UTCJul 5, 13:10 UTC2h 0m
2026-07-04 AAL2145 - Jul 4, 17:50 UTCJul 4, 19:55 UTC2h 5m
2026-07-04 AAL1537 - Jul 4, 13:15 UTCJul 4, 15:15 UTC2h 0m
2026-07-04 AAL1537 JAX → DFW Jul 4, 13:11 UTCJul 4, 15:19 UTC2h 8m
2026-07-03 AAL1980 - Jul 3, 20:35 UTCJul 3, 22:35 UTC2h 0m
2026-07-03 AAL1980 DFW → JAX Jul 3, 20:30 UTCJul 3, 22:31 UTC2h 1m
2026-07-03 AAL1324 - Jul 3, 17:45 UTCJul 3, 18:30 UTC45m

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 N983AN page for operator, model, and routing details .

Mode-S ADB656 frequently asked

What is Mode-S code ADB656?
ADB656 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N983AN.
Where is Mode-S ADB656 registered?
Mode-S code ADB656 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 ADB656 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADB656, octal 53333126, decimal 11,384,406.
What flights does ADB656 operate?
Mode-S ADB656 has broadcast 20 distinct callsigns, including AAL2045, AAL903, AAL392, AAL2918, AAL1013.