Apparatus

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sensors Mode-S transponder

A2B2DA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N273NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A2B2DA
Octal
50531332
Decimal
10,662,618
Country
US
Tail
N273NN
Type
E75L
Transponder active on ground
Flights observed
666
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A2B2DA.

Country allocation

The ICAO 24-bit address A2B2DA 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
ENY3464 - 11 2026-07-12
ENY3529 - 8 2026-07-09
ENY3867 - 7 2026-07-06
ENY3449 - 7 2026-07-10
ENY3862 Envoy Air 6 2026-04-27
ENY3636 Envoy Air 6 2026-05-26
ENY3632 - 6 2026-07-06
ENY3474 Envoy Air 6 2026-04-21
ENY4165 - 5 2026-06-30
ENY4100 - 5 2026-07-07
ENY4048 Envoy Air 5 2026-05-15
ENY3992 - 5 2026-07-04
ENY3956 Envoy Air 5 2026-06-05
ENY3621 - 5 2026-07-05
ENY3590 - 5 2026-06-29
ENY3559 - 5 2026-06-27
ENY3541 Envoy Air 5 2026-05-23
ENY3411 Envoy Air 5 2026-04-22
ENY4224 Envoy Air 4 2026-04-20
ENY4178 Envoy Air 4 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ENY4126 - Jul 14, 05:35 UTCJul 14, 06:00 UTC25m
2026-07-14 ENY4126 PHX → TUS Jul 14, 00:30 UTCJul 14, 00:55 UTC25m
2026-07-13 ENY4081 - Jul 13, 20:35 UTCJul 13, 23:10 UTC2h 35m
2026-07-13 ENY4081 - Jul 13, 16:55 UTCJul 13, 19:40 UTC2h 45m
2026-07-13 ENY4022 CLD → PHX Jul 13, 13:35 UTCJul 13, 14:25 UTC50m
2026-07-13 ENY4154 - Jul 13, 07:35 UTCJul 13, 08:25 UTC50m
2026-07-13 ENY4035 SEA → PHX Jul 13, 01:30 UTCJul 13, 04:10 UTC2h 40m
2026-07-12 ENY4035 PHX → SEA Jul 12, 21:45 UTCJul 13, 00:10 UTC2h 25m
2026-07-12 ENY3464 CLD → PHX Jul 12, 19:35 UTCJul 12, 20:40 UTC1h 5m
2026-07-12 ENY3464 PHX → CLD Jul 12, 17:35 UTCJul 12, 18:25 UTC50m
2026-07-12 ENY3906 - Jul 12, 13:50 UTCJul 12, 15:35 UTC1h 45m
2026-07-12 ENY3832 - Jul 12, 02:55 UTCJul 12, 04:50 UTC1h 55m
2026-07-12 ENY3832 PHX → SAT Jul 12, 02:55 UTCJul 12, 04:45 UTC1h 50m
2026-07-11 ENY3851 ZIH → PHX Jul 11, 22:23 UTCJul 12, 01:01 UTC2h 38m
2026-07-11 ENY3865 PHX → PHX Jul 11, 18:30 UTCJul 12, 01:00 UTC6h 30m
2026-07-11 ENY4033 - Jul 11, 13:50 UTCJul 11, 16:05 UTC2h 15m
2026-07-11 ENY3693 DFW → XNA Jul 11, 03:35 UTCJul 11, 04:25 UTC50m
2026-07-10 ENY3449 - Jul 10, 23:35 UTCJul 11, 01:40 UTC2h 5m
2026-07-10 ENY3449 - Jul 10, 20:15 UTCJul 10, 22:15 UTC2h 0m
2026-07-10 ENY3577 - Jul 10, 17:30 UTCJul 10, 19:05 UTC1h 35m
2026-07-10 ENY3577 HSV → DFW Jul 10, 17:26 UTCJul 10, 18:52 UTC1h 26m
2026-07-10 ENY3577 DFW → HSV Jul 10, 15:20 UTCJul 10, 16:45 UTC1h 25m
2026-07-10 ENY3417 - Jul 10, 00:45 UTCJul 10, 02:15 UTC1h 30m
2026-07-10 ENY3417 BHM → DFW Jul 10, 00:40 UTCJul 10, 02:11 UTC1h 31m
2026-07-09 ENY3417 - Jul 9, 22:25 UTCJul 9, 23:50 UTC1h 25m
2026-07-09 ENY3967 - Jul 9, 19:20 UTCJul 9, 20:25 UTC1h 5m
2026-07-09 ENY3967 BTR → DFW Jul 9, 19:18 UTCJul 9, 20:22 UTC1h 4m
2026-07-09 ENY3967 DFW → BTR Jul 9, 17:30 UTCJul 9, 18:25 UTC55m
2026-07-09 ENY3529 - Jul 9, 15:15 UTCJul 9, 16:00 UTC45m
2026-07-09 ENY3529 FSM → DFW Jul 9, 15:09 UTCJul 9, 15:50 UTC41m
2026-07-09 ENY3529 - Jul 9, 13:30 UTCJul 9, 14:05 UTC35m
2026-07-09 ENY4120 - Jul 9, 10:45 UTCJul 9, 11:35 UTC50m
2026-07-09 ENY3686 - Jul 9, 04:00 UTCJul 9, 04:35 UTC35m
2026-07-09 ENY3484 CRP → DFW Jul 9, 01:55 UTCJul 9, 03:00 UTC1h 5m
2026-07-09 ENY3484 - Jul 9, 00:20 UTCJul 9, 01:10 UTC50m
2026-07-08 ENY3860 - Jul 8, 19:45 UTCJul 8, 22:00 UTC2h 15m
2026-07-08 ENY3860 DFW → PXM Jul 8, 15:39 UTCJul 8, 18:15 UTC2h 36m
2026-07-08 ENY3860 - Jul 8, 15:40 UTCJul 8, 18:05 UTC2h 25m
2026-07-08 ENY3534 - Jul 8, 12:25 UTCJul 8, 14:05 UTC1h 40m
2026-07-08 ENY4034 - Jul 8, 02:35 UTCJul 8, 04:05 UTC1h 30m
2026-07-08 ENY3603 - Jul 8, 00:30 UTCJul 8, 01:40 UTC1h 10m
2026-07-07 ENY3603 - Jul 7, 20:45 UTCJul 7, 21:30 UTC45m
2026-07-07 ENY3483 SYR → ORD Jul 7, 18:25 UTCJul 7, 19:30 UTC1h 5m
2026-07-07 ENY3483 SYR → ORD Jul 7, 16:30 UTCJul 7, 17:30 UTC1h 0m
2026-07-07 ENY4100 - Jul 7, 14:10 UTCJul 7, 15:10 UTC1h 0m
2026-07-07 ENY4100 - Jul 7, 12:15 UTCJul 7, 13:10 UTC55m
2026-07-07 ENY3393 ACT → DFW Jul 7, 10:20 UTCJul 7, 10:50 UTC30m
2026-07-07 ENY3349 - Jul 7, 03:50 UTCJul 7, 04:05 UTC15m
2026-07-07 ENY3642 LRD → DFW Jul 7, 01:30 UTCJul 7, 03:00 UTC1h 30m
2026-07-06 ENY3642 DFW → LRD Jul 6, 23:20 UTCJul 7, 00:20 UTC1h 0m

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 N273NN page for operator, model, and routing details .

Mode-S A2B2DA frequently asked

What is Mode-S code A2B2DA?
A2B2DA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N273NN.
Where is Mode-S A2B2DA registered?
Mode-S code A2B2DA 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 A2B2DA broadcasting right now?
Mode-S A2B2DA is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2B2DA, octal 50531332, decimal 10,662,618.
What flights does A2B2DA operate?
Mode-S A2B2DA has broadcast 20 distinct callsigns, including ENY3464, ENY3529, ENY3867, ENY3449, ENY3862.