Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AD0725

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N939AN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
AD0725
Octal
53203445
Decimal
11,339,557
Country
US
Tail
N939AN
Type
B738
Broadcasting now · callsign AAL550 · 37,000 ft
Flights observed
489
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

AD0725 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD0725 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
AAL9 - 7 2026-07-02
AAL1796 American Airlines 5 2026-06-29
AAL1529 American Airlines 5 2026-06-12
AAL392 - 4 2026-06-21
AAL3325 American Airlines 4 2026-04-27
AAL3300 - 4 2026-06-16
AAL3063 American Airlines 4 2026-06-19
AAL2829 American Airlines 4 2026-04-16
AAL1877 American Airlines 4 2026-04-16
AAL1818 American Airlines 4 2026-04-17
AAL1629 - 4 2026-06-11
AAL1364 - 4 2026-06-19
AAL1312 American Airlines 4 2026-04-27
AAL706 - 3 2026-07-12
AAL584 American Airlines 3 2026-04-13
AAL3235 American Airlines 3 2026-05-29
AAL3215 American Airlines 3 2026-05-10
AAL2976 American Airlines 3 2026-04-27
AAL2926 - 3 2026-06-24
AAL2512 American Airlines 3 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL1194 - Jul 14, 13:20 UTCJul 14, 14:10 UTC50m
2026-07-14 AAL1238 - Jul 14, 04:50 UTCJul 14, 05:40 UTC50m
2026-07-13 AAL1790 - Jul 13, 22:10 UTCJul 14, 01:30 UTC3h 20m
2026-07-13 AAL1790 DTW → PHX Jul 13, 22:09 UTCJul 14, 01:25 UTC3h 16m
2026-07-13 AAL1790 PHX → DTW Jul 13, 17:20 UTCJul 13, 21:00 UTC3h 40m
2026-07-13 AAL1777 ATL → PHX Jul 13, 12:20 UTCJul 13, 15:40 UTC3h 20m
2026-07-13 AAL3212 - Jul 13, 02:15 UTCJul 13, 03:50 UTC1h 35m
2026-07-12 AAL2144 DFW → DFW Jul 12, 16:25 UTCJul 13, 00:45 UTC8h 20m
2026-07-12 AAL1217 - Jul 12, 11:55 UTCJul 12, 14:25 UTC2h 30m
2026-07-12 AAL1217 RDU → DFW Jul 12, 11:52 UTCJul 12, 14:25 UTC2h 33m
2026-07-12 AAL706 - Jul 12, 01:00 UTCJul 12, 02:01 UTC1h 0m
2026-07-12 AAL706 PHL → RDU Jul 12, 00:58 UTCJul 12, 01:57 UTC59m
2026-07-12 AAL706 PHL → PHL Jul 12, 00:35 UTCJul 12, 00:50 UTC15m
2026-07-11 AAL2838 TPA → PHL Jul 11, 20:55 UTCJul 11, 23:15 UTC2h 20m
2026-07-11 AAL2838 - Jul 11, 17:20 UTCJul 11, 19:50 UTC2h 30m
2026-07-11 AAL471 - Jul 11, 14:30 UTCJul 11, 16:00 UTC1h 30m
2026-07-11 AAL471 ORD → PHL Jul 11, 14:30 UTCJul 11, 16:00 UTC1h 30m
2026-07-11 AAL3267 EWR → ORD Jul 11, 11:05 UTCJul 11, 13:00 UTC1h 55m
2026-07-10 AAL618 - Jul 10, 21:40 UTCJul 11, 00:35 UTC2h 55m
2026-07-10 AAL1166 LGA → DFW Jul 10, 16:51 UTCJul 10, 20:03 UTC3h 12m
2026-07-10 AAL1166 - Jul 10, 16:55 UTCJul 10, 19:15 UTC2h 20m
2026-07-10 AAL327 - Jul 10, 11:15 UTCJul 10, 12:45 UTC1h 30m
2026-07-10 AAL1193 DFW → ORD Jul 10, 03:55 UTCJul 10, 05:45 UTC1h 50m
2026-07-10 AAL1193 DFW → ORD Jul 10, 03:50 UTCJul 10, 05:42 UTC1h 52m
2026-07-09 AAL3092 - Jul 9, 15:30 UTCJul 10, 00:35 UTC9h 5m
2026-07-09 AAL2193 - Jul 9, 12:05 UTCJul 9, 14:00 UTC1h 55m
2026-07-09 AAL1109 DFW → TUS Jul 9, 04:25 UTCJul 9, 06:15 UTC1h 50m
2026-07-09 AAL1109 DFW → TUS Jul 9, 04:23 UTCJul 9, 06:10 UTC1h 47m
2026-07-09 AAL1728 - Jul 9, 00:10 UTCJul 9, 02:00 UTC1h 50m
2026-07-09 AAL1728 CVG → DFW Jul 9, 00:07 UTCJul 9, 01:57 UTC1h 50m
2026-07-08 AAL1728 - Jul 8, 21:10 UTCJul 8, 23:00 UTC1h 50m
2026-07-08 AAL2460 - Jul 8, 17:40 UTCJul 8, 19:15 UTC1h 35m
2026-07-08 AAL2460 - Jul 8, 14:40 UTCJul 8, 16:10 UTC1h 30m
2026-07-06 AAL1379 PVD → PHL Jul 6, 04:36 UTCJul 6, 06:22 UTC1h 46m
2026-07-06 AAL1379 PVD → PHL Jul 6, 04:40 UTCJul 6, 06:20 UTC1h 40m
2026-07-06 AAL1379 PVD → PHL Jul 6, 01:35 UTCJul 6, 03:15 UTC1h 40m
2026-07-05 AAL2512 MIA → ORD Jul 5, 20:00 UTCJul 5, 20:50 UTC50m
2026-07-05 AAL2512 MIA → ORD Jul 5, 19:56 UTCJul 5, 20:45 UTC49m
2026-07-05 AAL2512 MIA → ORD Jul 5, 18:05 UTCJul 5, 18:45 UTC40m
2026-07-04 AAL1916 - Jul 4, 16:20 UTCJul 4, 17:05 UTC45m
2026-07-03 AAL1914 - Jul 3, 23:50 UTCJul 4, 00:30 UTC40m
2026-07-03 AAL1955 - Jul 3, 17:50 UTCJul 3, 19:50 UTC2h 0m
2026-07-03 AAL1955 DFW → IND Jul 3, 14:45 UTCJul 3, 16:25 UTC1h 40m
2026-07-03 AAL955 - Jul 3, 11:45 UTCJul 3, 13:05 UTC1h 20m
2026-07-03 AAL2267 - Jul 3, 02:05 UTCJul 3, 03:10 UTC1h 5m
2026-07-02 AAL9 - Jul 2, 23:25 UTCJul 3, 00:00 UTC35m
2026-07-02 AAL9 - Jul 2, 22:40 UTCJul 2, 22:50 UTC10m
2026-07-02 AAL9 ABQ → DFW Jul 2, 22:40 UTCJul 2, 23:57 UTC1h 17m
2026-07-02 AAL9 - Jul 2, 20:00 UTCJul 2, 20:30 UTC30m
2026-07-02 AAL1697 COS → DFW Jul 2, 16:45 UTCJul 2, 18:05 UTC1h 20m

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 N939AN page for operator, model, and routing details .

Mode-S AD0725 frequently asked

What is Mode-S code AD0725?
AD0725 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N939AN.
Where is Mode-S AD0725 registered?
Mode-S code AD0725 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 AD0725 broadcasting right now?
Yes. Mode-S AD0725 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD0725, octal 53203445, decimal 11,339,557.
What flights does AD0725 operate?
Mode-S AD0725 has broadcast 20 distinct callsigns, including AAL9, AAL1796, AAL1529, AAL392, AAL3325.