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
Broadcasting now · callsign AAL498 · 36,000 ft
Flights observed
297
Distinct callsigns
20
Country
US
Last broadcast
11h ago

Current position

AD4EB5 is currently broadcasting. Map zoomed to live position.

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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AAL1353 MIA → SJO May 29, 23:10 UTCMay 30, 01:15 UTC2h 5m
2026-05-29 AAL1353 MIA → SJO May 29, 23:07 UTCMay 30, 01:36 UTC2h 29m
2026-05-29 AAL3034 MIA → DCA May 29, 19:10 UTCMay 29, 20:55 UTC1h 45m
2026-05-29 AAL3034 MIA → DCA May 29, 18:45 UTCMay 29, 20:50 UTC2h 5m
2026-05-29 AAL357 ORD → LGA May 29, 15:10 UTCMay 29, 16:55 UTC1h 46m
2026-05-29 AAL357 ORD → LGA May 29, 15:06 UTCMay 29, 17:23 UTC2h 17m
2026-05-29 AAL1340 FLL → DFW May 29, 10:55 UTCMay 29, 12:55 UTC2h 0m
2026-05-29 AAL1340 FLL → DFW May 29, 10:51 UTCMay 29, 12:48 UTC1h 57m
2026-05-29 AAL1551 DFW → ORD May 29, 03:20 UTCMay 29, 05:05 UTC1h 45m
2026-05-29 AAL2963 DFW → SDF May 29, 00:50 UTCMay 29, 01:25 UTC35m
2026-05-28 AAL2890 PHL → CMH May 28, 17:50 UTCMay 28, 20:25 UTC2h 35m
2026-05-28 AAL2890 PHL → CMH May 28, 17:48 UTCMay 28, 21:14 UTC3h 26m
2026-05-28 AAL1978 CLT → BOS May 28, 12:45 UTCMay 28, 15:15 UTC2h 30m
2026-05-28 AAL1978 CLT → BOS May 28, 12:40 UTCMay 28, 15:28 UTC2h 48m
2026-05-27 AAL472 DFW → DCA May 27, 22:50 UTCMay 28, 01:15 UTC2h 25m
2026-05-27 AAL390 MEX → DFW May 27, 18:50 UTCMay 27, 21:00 UTC2h 10m
2026-05-27 AAL389 DFW → MEX May 27, 14:55 UTCMay 27, 17:18 UTC2h 23m
2026-05-27 AAL389 DFW → MEX May 27, 15:00 UTCMay 27, 17:15 UTC2h 15m
2026-05-27 AAL1091 CLT → PHL May 27, 12:00 UTCMay 27, 13:15 UTC1h 15m
2026-05-27 AAL1607 PHX → PHL May 27, 04:26 UTCMay 27, 05:40 UTC1h 14m
2026-05-27 AAL1607 PHX → PHL May 27, 04:30 UTCMay 27, 05:40 UTC1h 10m
2026-05-26 AAL1571 PHX → PHL May 26, 23:20 UTCMay 27, 02:28 UTC3h 8m
2026-05-26 AAL1571 PHX → PHL May 26, 23:19 UTCMay 27, 01:14 UTC1h 55m
2026-05-26 AAL3114 BJX → DFW May 26, 19:45 UTCMay 26, 22:05 UTC2h 20m
2026-05-26 AAL2066 DFW → SLC May 26, 16:05 UTCMay 26, 18:24 UTC2h 20m
2026-05-26 AAL392 PHL → PVD May 26, 11:34 UTCMay 26, 13:45 UTC2h 10m
2026-05-25 AAL1724 DFW → BUF May 25, 23:24 UTCMay 26, 01:00 UTC1h 35m
2026-05-25 AAL872 CVG → PHX May 25, 19:30 UTCMay 25, 21:49 UTC2h 20m
2026-05-25 AAL1563 DFW → LGA May 25, 16:30 UTCMay 25, 18:10 UTC1h 40m
2026-05-25 AAL1327 JFK → CUN May 25, 12:10 UTCMay 25, 14:55 UTC2h 45m
2026-05-24 AAL1134 PEI → MIA May 24, 16:35 UTCMay 25, 05:10 UTC12h 35m
2026-05-24 AAL850 GUA → MIA May 24, 12:05 UTCMay 24, 14:10 UTC2h 5m
2026-05-24 AAL463 PHX → LAX May 24, 06:35 UTCMay 24, 06:50 UTC15m
2026-05-24 AAL463 PHX → LAX May 24, 04:05 UTCMay 24, 05:00 UTC55m
2026-05-23 AAL1904 CLT → RDU May 23, 23:40 UTCMay 24, 02:25 UTC2h 45m
2026-05-23 AAL1904 CLT → RDU May 23, 23:37 UTCMay 24, 02:22 UTC2h 45m
2026-05-23 AAL1904 CLT → RDU May 23, 20:05 UTCMay 23, 22:25 UTC2h 20m
2026-05-23 AAL1680 DFW → CAE May 23, 16:00 UTCMay 23, 18:40 UTC2h 41m
2026-05-23 AAL1680 DFW → CAE May 23, 15:57 UTCMay 23, 18:35 UTC2h 38m
2026-05-23 AAL1680 DFW → CAE May 23, 12:35 UTCMay 23, 14:50 UTC2h 15m
2026-05-23 AAL1980 IND → PHX May 23, 00:50 UTCMay 23, 03:15 UTC2h 24m
2026-05-23 AAL1980 IND → PHX May 23, 00:48 UTCMay 23, 03:14 UTC2h 26m
2026-05-22 AAL1980 IND → PHX May 22, 21:25 UTCMay 22, 23:30 UTC2h 5m
2026-05-22 AAL1906 RDU → CLT May 22, 17:09 UTCMay 22, 19:52 UTC2h 43m
2026-05-22 AAL1906 RDU → CLT May 22, 17:10 UTCMay 22, 19:55 UTC2h 45m
2026-05-22 AAL1906 RDU → CLT May 22, 12:30 UTCMay 22, 15:05 UTC2h 35m
2026-05-22 AAL1728 DTW → PHX May 22, 00:50 UTCMay 22, 02:50 UTC2h 0m
2026-05-21 AAL1728 DTW → PHX May 21, 21:25 UTCMay 21, 23:10 UTC1h 45m
2026-05-21 AAL2135 PWM → PHL May 21, 17:10 UTCMay 21, 19:15 UTC2h 5m
2026-05-21 AAL2135 PWM → PHL May 21, 17:06 UTCMay 21, 19:11 UTC2h 5m

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?
Yes. Mode-S AD4EB5 is currently airborne.
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 AAL2336, AAL2267, AAL897, AAL2137, AAL1906.