Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AD4FE1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N957NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
AD4FE1
Octal
53247741
Decimal
11,358,177
Country
US
Tail
N957NN
Type
B738
No current signal · last broadcast 10d ago
Flights observed
410
Distinct callsigns
20
Country
US
Last broadcast
10d ago

Last known position

Most recent position reported by Mode-S AD4FE1.

Country allocation

The ICAO 24-bit address AD4FE1 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
AAL2647 American Airlines 7 2026-05-11
AAL3327 American Airlines 5 2026-06-03
AAL2515 American Airlines 5 2026-04-15
AAL2489 American Airlines 5 2026-05-12
AAL1464 American Airlines 5 2026-04-16
AAL764 - 4 2026-06-28
AAL363 American Airlines 4 2026-04-30
AAL360 American Airlines 4 2026-04-29
AAL3300 American Airlines 4 2026-05-31
AAL329 American Airlines 4 2026-04-29
AAL3238 American Airlines 4 2026-06-03
AAL2001 - 4 2026-07-02
AAL1414 - 4 2026-06-26
AAL1114 - 4 2026-06-27
AAL1029 American Airlines 4 2026-06-21
AAL1005 American Airlines 4 2026-05-23
AAL899 American Airlines 3 2026-06-03
AAL814 American Airlines 3 2026-06-11
AAL606 American Airlines 3 2026-05-04
AAL2885 American Airlines 3 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-03 AAL2662 - Jul 3, 22:55 UTCJul 4, 00:55 UTC2h 0m
2026-07-03 AAL2662 CLT → TUL Jul 3, 22:50 UTCJul 4, 00:50 UTC2h 0m
2026-07-03 AAL2853 DFW → ELP Jul 3, 18:55 UTCJul 3, 20:50 UTC1h 55m
2026-07-03 AAL2853 DFW → ELP Jul 3, 18:53 UTCJul 3, 20:40 UTC1h 47m
2026-07-03 AAL2853 DFW → ELP Jul 3, 15:55 UTCJul 3, 17:45 UTC1h 50m
2026-07-03 AAL2692 - Jul 3, 12:30 UTCJul 3, 13:20 UTC50m
2026-07-03 AAL2833 - Jul 3, 01:45 UTCJul 3, 03:30 UTC1h 45m
2026-07-03 AAL2833 MIA → BNA Jul 3, 01:42 UTCJul 3, 03:28 UTC1h 46m
2026-07-02 AAL2231 DFW → SFO Jul 2, 21:20 UTCJul 2, 22:55 UTC1h 35m
2026-07-02 AAL2001 - Jul 2, 17:50 UTCJul 2, 18:40 UTC50m
2026-07-02 AAL2001 - Jul 2, 15:45 UTCJul 2, 16:35 UTC50m
2026-07-02 AAL1729 - Jul 2, 12:35 UTCJul 2, 14:25 UTC1h 50m
2026-07-02 AAL1729 TUL → CLT Jul 2, 12:33 UTCJul 2, 14:20 UTC1h 47m
2026-07-01 AAL2662 - Jul 1, 22:35 UTCJul 2, 00:25 UTC1h 50m
2026-07-01 AAL2348 - Jul 1, 18:50 UTCJul 1, 20:35 UTC1h 45m
2026-07-01 AAL2348 - Jul 1, 15:30 UTCJul 1, 17:15 UTC1h 45m
2026-07-01 AAL712 - Jul 1, 12:35 UTCJul 1, 13:55 UTC1h 20m
2026-06-30 AAL3179 PHX → STL Jun 30, 19:40 UTCJun 30, 22:10 UTC2h 30m
2026-06-30 AAL2461 - Jun 30, 17:00 UTCJun 30, 17:55 UTC55m
2026-06-30 AAL2461 - Jun 30, 14:55 UTCJun 30, 15:55 UTC1h 0m
2026-06-30 AAL375 MIA → PHL Jun 30, 11:15 UTCJun 30, 13:25 UTC2h 10m
2026-06-30 AAL375 MIA → PHL Jun 30, 11:15 UTCJun 30, 13:24 UTC2h 9m
2026-06-30 AAL1818 - Jun 30, 07:45 UTCJun 30, 09:40 UTC1h 55m
2026-06-30 AAL2544 SFO → PHX Jun 30, 02:20 UTCJun 30, 03:55 UTC1h 35m
2026-06-29 AAL1253 ORD → SFO Jun 29, 20:35 UTCJun 30, 00:45 UTC4h 10m
2026-06-29 AAL319 PHX → ORD Jun 29, 15:49 UTCJun 29, 18:49 UTC3h 0m
2026-06-29 AAL796 - Jun 29, 10:15 UTCJun 29, 12:14 UTC2h 0m
2026-06-29 AAL796 IND → PHX Jun 29, 10:12 UTCJun 29, 13:34 UTC3h 22m
2026-06-29 AAL635 - Jun 29, 00:49 UTCJun 29, 04:14 UTC3h 25m
2026-06-29 AAL635 LAX → IND Jun 29, 00:47 UTCJun 29, 04:14 UTC3h 27m
2026-06-28 AAL2883 - Jun 28, 21:45 UTCJun 28, 23:09 UTC1h 25m
2026-06-28 AAL764 - Jun 28, 16:45 UTCJun 28, 17:55 UTC1h 10m
2026-06-28 AAL764 LAX → PVR Jun 28, 16:41 UTCJun 28, 19:16 UTC2h 35m
2026-06-28 AAL598 MSY → MIA Jun 28, 10:50 UTCJun 28, 14:45 UTC3h 55m
2026-06-28 AAL2800 DFW → IND Jun 28, 00:30 UTCJun 28, 02:10 UTC1h 40m
2026-06-27 AAL1114 PVR → DFW Jun 27, 20:13 UTCJun 27, 22:26 UTC2h 13m
2026-06-27 AAL1114 DFW → DFW Jun 27, 16:55 UTCJun 27, 22:29 UTC5h 35m
2026-06-27 AAL2560 PHL → TPA Jun 27, 11:55 UTCJun 27, 13:30 UTC1h 35m
2026-06-27 AAL1201 - Jun 27, 02:09 UTCJun 27, 03:34 UTC1h 25m
2026-06-26 AAL1414 DCA → DFW Jun 26, 21:44 UTCJun 27, 00:24 UTC2h 40m
2026-06-26 AAL1414 DCA → DFW Jun 26, 21:45 UTCJun 27, 00:25 UTC2h 40m
2026-06-26 AAL1414 DFW → DCA Jun 26, 17:15 UTCJun 26, 19:55 UTC2h 40m
2026-06-26 AAL1414 DFW → DCA Jun 26, 17:13 UTCJun 26, 19:50 UTC2h 37m
2026-06-26 AAL1555 DFW → GRR Jun 26, 13:34 UTCJun 26, 15:39 UTC2h 5m
2026-06-25 AAL2389 YYC → ORD Jun 25, 19:59 UTCJun 25, 22:54 UTC2h 55m
2026-06-25 AAL2389 - Jun 25, 15:20 UTCJun 25, 18:15 UTC2h 55m
2026-06-25 AAL2389 ORD → YYC Jun 25, 15:17 UTCJun 25, 18:40 UTC3h 23m
2026-06-25 AAL392 LGA → ORD Jun 25, 11:35 UTCJun 25, 13:40 UTC2h 5m
2026-06-25 AAL2490 FLL → LGA Jun 25, 00:29 UTCJun 25, 03:04 UTC2h 35m
2026-06-25 AAL2490 FLL → LGA Jun 25, 00:29 UTCJun 25, 03:04 UTC2h 35m

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 N957NN page for operator, model, and routing details .

Mode-S AD4FE1 frequently asked

What is Mode-S code AD4FE1?
AD4FE1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N957NN.
Where is Mode-S AD4FE1 registered?
Mode-S code AD4FE1 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 AD4FE1 broadcasting right now?
No active broadcast right now. Last signal was 10d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD4FE1, octal 53247741, decimal 11,358,177.
What flights does AD4FE1 operate?
Mode-S AD4FE1 has broadcast 20 distinct callsigns, including AAL2647, AAL3327, AAL2515, AAL2489, AAL1464.