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
Broadcasting now · callsign ENY4032 · 5,275 ft
Flights observed
13
Distinct callsigns
7
Country
US
Last broadcast
21h ago

Current position

A2D2EB is currently broadcasting. Map zoomed to live position.

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 7 distinct

Callsign Airline Flights Last seen
ENY3724 - 3 2026-04-13
ENY4149 Envoy Air 2 2026-04-12
ENY4143 Envoy Air 2 2026-04-13
ENY4053 - 2 2026-04-13
ENY4039 - 2 2026-04-13
ENY3560 - 1 2026-04-13
ENY3460 - 1 2026-04-14

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 ENY3460 - Apr 14, 05:15 UTCApr 14, 06:10 UTC55m
2026-04-13 ENY3560 - Apr 13, 22:40 UTCApr 13, 23:40 UTC1h 0m
2026-04-13 ENY3724 - Apr 13, 20:05 UTCApr 13, 21:00 UTC55m
2026-04-13 ENY3724 - Apr 13, 19:42 UTCApr 13, 20:55 UTC1h 13m
2026-04-13 ENY3724 - Apr 13, 17:25 UTCApr 13, 18:25 UTC1h 0m
2026-04-13 ENY4053 - Apr 13, 15:50 UTCApr 13, 16:10 UTC20m
2026-04-13 ENY4053 - Apr 13, 13:45 UTCApr 13, 15:54 UTC2h 9m
2026-04-13 ENY4039 - Apr 13, 03:55 UTCApr 13, 04:10 UTC15m
2026-04-13 ENY4039 PHX → ICT Apr 13, 02:20 UTCApr 13, 04:10 UTC1h 50m
2026-04-13 ENY4143 ORD → ELP Apr 13, 00:20 UTCApr 13, 01:00 UTC40m
2026-04-13 ENY4143 ORD → ELP Apr 13, 00:10 UTCApr 13, 01:00 UTC50m
2026-04-12 ENY4149 ORD → MHT Apr 12, 18:39 UTCApr 12, 21:10 UTC2h 31m
2026-04-12 ENY4149 ORD → MHT Apr 12, 17:15 UTCApr 12, 17:40 UTC25m

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?
Yes. Mode-S A2D2EB is currently airborne.
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 7 distinct callsigns, including ENY3724, ENY4149, ENY4143, ENY4053, ENY4039.