Apparatus

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sensors Mode-S transponder

A2D2EB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N281NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A2D2EB
Octal
50551353
Decimal
10,670,827
Country
US
Tail
N281NN
Type
E75L
No current signal · last broadcast Jul 26, 21:50 UTC
Flights observed
777
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:50 UTC

Last known position

Most recent position reported by Mode-S A2D2EB.

Country allocation

The ICAO 24-bit address A2D2EB 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
ENY3439 - 8 2026-07-15
ENY3731 - 7 2026-07-23
ENY4263 Envoy Air 6 2026-07-24
ENY4137 Envoy Air 6 2026-06-08
ENY3729 - 6 2026-06-29
ENY3623 Envoy Air 6 2026-05-16
ENY3602 - 6 2026-07-07
ENY3580 Envoy Air 6 2026-06-16
ENY3475 Envoy Air 6 2026-05-15
ENY3430 - 6 2026-07-05
ENY4217 Envoy Air 5 2026-04-30
ENY4153 - 5 2026-07-06
ENY4135 - 5 2026-07-10
ENY3998 Envoy Air 5 2026-05-21
ENY3967 Envoy Air 5 2026-07-25
ENY3931 Envoy Air 5 2026-05-15
ENY3830 - 5 2026-06-21
ENY3797 Envoy Air 5 2026-06-19
ENY3441 - 5 2026-07-17
ENY3389 Envoy Air 5 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3429 AUS → ORD Jul 26, 19:35 UTCJul 26, 21:50 UTC2h 15m
2026-07-26 ENY3429 AUS → ORD Jul 26, 16:10 UTCJul 26, 18:35 UTC2h 25m
2026-07-26 ENY3417 ORD → COU Jul 26, 00:40 UTCJul 26, 02:05 UTC1h 25m
2026-07-25 ENY3417 ORD → COU Jul 25, 21:55 UTCJul 25, 23:25 UTC1h 30m
2026-07-25 ENY3967 DFW → DGO Jul 25, 19:25 UTCJul 25, 20:30 UTC1h 5m
2026-07-25 ENY3967 DFW → DGO Jul 25, 19:24 UTCJul 25, 20:25 UTC1h 1m
2026-07-25 ENY3967 DFW → DGO Jul 25, 17:25 UTCJul 25, 18:25 UTC1h 0m
2026-07-25 ENY3390 EYW → ORD Jul 25, 14:05 UTCJul 25, 15:50 UTC1h 45m
2026-07-25 ENY3390 EYW → ORD Jul 25, 11:20 UTCJul 25, 13:05 UTC1h 45m
2026-07-25 ENY3347 DFW → CVG Jul 25, 00:30 UTCJul 25, 01:55 UTC1h 25m
2026-07-24 ENY3347 DFW → CVG Jul 24, 22:15 UTCJul 24, 23:40 UTC1h 25m
2026-07-24 ENY4263 DFW → VER Jul 24, 18:10 UTCJul 24, 20:20 UTC2h 10m
2026-07-24 ENY4263 DFW → VER Jul 24, 18:07 UTCJul 24, 20:19 UTC2h 12m
2026-07-24 ENY4263 DFW → VER Jul 24, 15:00 UTCJul 24, 17:00 UTC2h 0m
2026-07-24 ENY3867 BWI → ORD Jul 24, 12:25 UTCJul 24, 13:35 UTC1h 10m
2026-07-24 ENY3867 BWI → ORD Jul 24, 12:16 UTCJul 24, 13:30 UTC1h 14m
2026-07-24 ENY3868 DCA → CVG Jul 24, 02:45 UTCJul 24, 03:30 UTC45m
2026-07-24 ENY3548 GPT → DFW Jul 24, 01:00 UTCJul 24, 01:35 UTC35m
2026-07-23 ENY3548 GPT → DFW Jul 23, 23:10 UTCJul 23, 23:30 UTC20m
2026-07-23 ENY3840 PIT → DCA Jul 23, 21:10 UTCJul 23, 21:55 UTC45m
2026-07-23 ENY3840 PIT → DCA Jul 23, 19:15 UTCJul 23, 20:05 UTC50m
2026-07-23 ENY3731 OKC → DFW Jul 23, 17:30 UTCJul 23, 18:05 UTC35m
2026-07-23 ENY3731 OKC → DFW Jul 23, 17:29 UTCJul 23, 18:02 UTC33m
2026-07-23 ENY3731 DFW → OKC Jul 23, 16:00 UTCJul 23, 16:35 UTC35m
2026-07-23 ENY3941 CVG → ORD Jul 23, 13:25 UTCJul 23, 14:30 UTC1h 5m
2026-07-23 ENY3903 ORD → MSN Jul 23, 02:10 UTCJul 23, 03:10 UTC1h 0m
2026-07-23 ENY3903 ORD → MSN Jul 23, 02:08 UTCJul 23, 03:09 UTC1h 1m
2026-07-22 ENY3697 MHK → DFW Jul 22, 22:45 UTCJul 23, 00:25 UTC1h 40m
2026-07-22 ENY3875 DFW → SJT Jul 22, 20:20 UTCJul 22, 21:50 UTC1h 30m
2026-07-22 ENY4010 BOS → ORD Jul 22, 17:05 UTCJul 22, 18:05 UTC1h 0m
2026-07-22 ENY4010 BOS → ORD Jul 22, 16:56 UTCJul 22, 18:09 UTC1h 13m
2026-07-22 ENY4010 BOS → ORD Jul 22, 15:00 UTCJul 22, 15:55 UTC55m
2026-07-22 ENY3673 - Jul 22, 11:10 UTCJul 22, 12:45 UTC1h 35m
2026-07-22 ENY3673 ATW → DFW Jul 22, 10:58 UTCJul 22, 13:00 UTC2h 2m
2026-07-22 ENY4188 DFW → ATW Jul 22, 01:45 UTCJul 22, 03:50 UTC2h 5m
2026-07-21 ENY3689 BOS → IND Jul 21, 22:30 UTCJul 21, 23:45 UTC1h 15m
2026-07-21 ENY3689 BOS → IND Jul 21, 22:27 UTCJul 21, 23:42 UTC1h 15m
2026-07-21 ENY3689 BOS → IND Jul 21, 20:35 UTCJul 21, 21:35 UTC1h 0m
2026-07-21 ENY3791 BNA → TPA Jul 21, 17:25 UTCJul 21, 19:05 UTC1h 40m
2026-07-21 ENY3791 BNA → TPA Jul 21, 14:45 UTCJul 21, 16:30 UTC1h 45m
2026-07-21 ENY3417 ORD → COU Jul 21, 00:15 UTCJul 21, 01:40 UTC1h 25m
2026-07-20 ENY3417 ORD → COU Jul 20, 22:00 UTCJul 20, 23:15 UTC1h 15m
2026-07-20 ENY3967 DFW → DGO Jul 20, 19:20 UTCJul 20, 20:20 UTC1h 0m
2026-07-20 ENY3967 DFW → DGO Jul 20, 17:20 UTCJul 20, 18:20 UTC1h 0m
2026-07-20 ENY3529 - Jul 20, 15:15 UTCJul 20, 15:50 UTC35m
2026-07-20 ENY3529 - Jul 20, 13:30 UTCJul 20, 14:05 UTC35m
2026-07-20 ENY3951 - Jul 20, 10:20 UTCJul 20, 11:40 UTC1h 20m
2026-07-20 ENY3951 GPT → DFW Jul 20, 10:18 UTCJul 20, 11:35 UTC1h 17m
2026-07-20 ENY4308 - Jul 20, 02:55 UTCJul 20, 04:05 UTC1h 10m
2026-07-20 ENY4308 DFW → GPT Jul 20, 02:52 UTCJul 20, 04:03 UTC1h 11m

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 N281NN page for operator, model, and routing details .

Mode-S A2D2EB frequently asked

What is Mode-S code A2D2EB?
A2D2EB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N281NN.
Where is Mode-S A2D2EB registered?
Mode-S code A2D2EB 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 A2D2EB broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2D2EB, octal 50551353, decimal 10,670,827.
What flights does A2D2EB operate?
Mode-S A2D2EB has broadcast 20 distinct callsigns, including ENY3439, ENY3731, ENY4263, ENY4137, ENY3729.