Apparatus

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sensors Mode-S transponder

AD4EB5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N957AN · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
AD4EB5
Octal
53247265
Decimal
11,357,877
Country
US
Tail
N957AN
Type
B738
No current signal · last broadcast Jul 26, 15:50 UTC
Flights observed
606
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 15:50 UTC

Last known position

Most recent position reported by Mode-S AD4EB5.

Country allocation

The ICAO 24-bit address AD4EB5 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
AAL2753 American Airlines 7 2026-07-20
AAL2336 American Airlines 6 2026-04-26
AAL925 - 5 2026-07-18
AAL2267 American Airlines 5 2026-05-14
AAL939 - 4 2026-07-19
AAL897 American Airlines 4 2026-05-03
AAL359 - 4 2026-07-14
AAL2581 - 4 2026-06-20
AAL2549 - 4 2026-06-15
AAL2452 - 4 2026-06-15
AAL2389 American Airlines 4 2026-06-08
AAL2137 - 4 2026-04-14
AAL2088 - 4 2026-07-07
AAL1906 American Airlines 4 2026-05-22
AAL1834 American Airlines 4 2026-04-18
AAL1620 - 4 2026-07-14
AAL1606 - 4 2026-06-26
AAL1458 American Airlines 4 2026-04-20
AAL814 American Airlines 3 2026-05-19
AAL707 American Airlines 3 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1070 DFW → TPA Jul 26, 15:05 UTCJul 26, 15:50 UTC45m
2026-07-26 AAL444 FLL → PHL Jul 26, 10:30 UTCJul 26, 12:50 UTC2h 20m
2026-07-26 AAL444 FLL → PHL Jul 26, 10:25 UTCJul 26, 12:45 UTC2h 20m
2026-07-25 AAL1864 MSN → CLT Jul 25, 23:50 UTCJul 26, 01:55 UTC2h 5m
2026-07-25 AAL802 RDU → DFW Jul 25, 20:20 UTCJul 25, 21:30 UTC1h 10m
2026-07-25 AAL809 PHX → PIT Jul 25, 13:15 UTCJul 25, 16:58 UTC3h 43m
2026-07-25 AAL809 PHX → PIT Jul 25, 13:15 UTCJul 25, 15:25 UTC2h 10m
2026-07-25 AAL2328 PHL → SAN Jul 25, 03:55 UTCJul 25, 06:00 UTC2h 5m
2026-07-24 AAL401 PHL → CLT Jul 24, 23:50 UTCJul 25, 01:50 UTC2h 0m
2026-07-24 AAL3101 DFW → DTW Jul 24, 20:15 UTCJul 24, 21:15 UTC1h 0m
2026-07-24 AAL3101 DFW → DTW Jul 24, 20:13 UTCJul 24, 22:48 UTC2h 35m
2026-07-24 AAL1935 DFW → MEM Jul 24, 17:50 UTCJul 24, 19:00 UTC1h 10m
2026-07-24 AAL1935 DFW → MEM Jul 24, 14:55 UTCJul 24, 15:55 UTC1h 0m
2026-07-24 AAL1561 EWR → DFW Jul 24, 11:20 UTCJul 24, 13:25 UTC2h 5m
2026-07-24 AAL3113 MIA → MSY Jul 24, 05:45 UTCJul 24, 07:10 UTC1h 25m
2026-07-24 AAL1637 IND → PHL Jul 24, 03:15 UTCJul 24, 04:15 UTC1h 0m
2026-07-23 AAL3004 ATL → MIA Jul 23, 23:20 UTCJul 24, 02:00 UTC2h 40m
2026-07-23 AAL3004 ATL → MIA Jul 23, 23:16 UTCJul 24, 01:59 UTC2h 43m
2026-07-23 AAL3062 MIA → ORD Jul 23, 19:25 UTCJul 23, 21:30 UTC2h 5m
2026-07-23 AAL3062 MIA → ORD Jul 23, 18:40 UTCJul 23, 18:45 UTC5m
2026-07-23 AAL1641 CLT → MEM Jul 23, 17:00 UTCJul 23, 17:10 UTC10m
2026-07-23 AAL1641 CLT → MEM Jul 23, 15:10 UTCJul 23, 16:30 UTC1h 20m
2026-07-23 AAL1026 PHL → DFW Jul 23, 11:35 UTCJul 23, 13:05 UTC1h 30m
2026-07-23 AAL1026 PHL → DFW Jul 23, 11:15 UTCJul 23, 13:04 UTC1h 49m
2026-07-22 AAL368 MIA → SDQ Jul 22, 23:20 UTCJul 23, 00:45 UTC1h 25m
2026-07-22 AAL368 MIA → SDQ Jul 22, 23:15 UTCJul 23, 01:11 UTC1h 56m
2026-07-22 AAL1144 CTG → MIA Jul 22, 18:34 UTCJul 22, 21:05 UTC2h 31m
2026-07-22 AAL1144 CTG → MIA Jul 22, 18:35 UTCJul 22, 21:05 UTC2h 30m
2026-07-22 AAL1145 - Jul 22, 15:00 UTCJul 22, 17:15 UTC2h 15m
2026-07-22 AAL1716 IND → CLT Jul 22, 11:10 UTCJul 22, 12:50 UTC1h 40m
2026-07-22 AAL1716 IND → CLT Jul 22, 10:23 UTCJul 22, 12:49 UTC2h 26m
2026-07-22 AAL1594 PHL → IND Jul 22, 01:35 UTCJul 22, 03:55 UTC2h 20m
2026-07-21 AAL2171 TPA → PHL Jul 21, 17:20 UTCJul 21, 22:35 UTC5h 15m
2026-07-20 AAL2370 - Jul 20, 23:50 UTCJul 21, 14:35 UTC14h 45m
2026-07-20 AAL2753 PHL → CMH Jul 20, 19:55 UTCJul 20, 22:20 UTC2h 25m
2026-07-20 AAL2753 PHL → CMH Jul 20, 16:05 UTCJul 20, 18:15 UTC2h 10m
2026-07-20 AAL3154 DFW → CMH Jul 20, 12:20 UTCJul 20, 14:15 UTC1h 55m
2026-07-20 AAL3154 DFW → CMH Jul 20, 12:11 UTCJul 20, 14:14 UTC2h 3m
2026-07-19 AAL2657 SEA → DFW Jul 19, 23:10 UTCJul 20, 01:00 UTC1h 50m
2026-07-19 AAL2657 SEA → DFW Jul 19, 23:07 UTCJul 20, 01:17 UTC2h 10m
2026-07-19 AAL438 SFO → ORD Jul 19, 20:10 UTCJul 19, 21:40 UTC1h 30m
2026-07-19 AAL939 - Jul 19, 16:15 UTCJul 19, 17:45 UTC1h 30m
2026-07-19 AAL939 MIA → SAP Jul 19, 16:13 UTCJul 19, 18:10 UTC1h 57m
2026-07-19 AAL924 MDE → MIA Jul 19, 11:25 UTCJul 19, 14:10 UTC2h 45m
2026-07-19 AAL924 MDE → MIA Jul 19, 11:15 UTCJul 19, 14:11 UTC2h 56m
2026-07-19 AAL923 - Jul 19, 01:35 UTCJul 19, 01:55 UTC20m
2026-07-19 AAL923 MIA → MDE Jul 19, 01:34 UTCJul 19, 04:29 UTC2h 55m
2026-07-18 AAL910 - Jul 18, 21:00 UTCJul 18, 23:20 UTC2h 20m
2026-07-18 AAL925 - Jul 18, 19:20 UTCJul 18, 19:40 UTC20m
2026-07-18 AAL925 - Jul 18, 17:20 UTCJul 18, 17:40 UTC20m

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 N957AN page for operator, model, and routing details .

Mode-S AD4EB5 frequently asked

What is Mode-S code AD4EB5?
AD4EB5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N957AN.
Where is Mode-S AD4EB5 registered?
Mode-S code AD4EB5 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 AD4EB5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD4EB5, octal 53247265, decimal 11,357,877.
What flights does AD4EB5 operate?
Mode-S AD4EB5 has broadcast 20 distinct callsigns, including AAL2753, AAL2336, AAL925, AAL2267, AAL939.