Apparatus

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sensors Mode-S transponder

A2BDFF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N276NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A2BDFF
Octal
50536777
Decimal
10,665,471
Country
US
Tail
N276NN
Type
E75L
No current signal · last broadcast Jul 26, 14:35 UTC
Flights observed
767
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 14:35 UTC

Last known position

Most recent position reported by Mode-S A2BDFF.

Country allocation

The ICAO 24-bit address A2BDFF 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
ENY3382 - 9 2026-07-02
ENY4031 Envoy Air 7 2026-07-24
ENY4300 - 6 2026-06-24
ENY4178 - 6 2026-07-16
ENY4114 Envoy Air 6 2026-07-17
ENY4104 Envoy Air 6 2026-05-10
ENY4087 Envoy Air 6 2026-05-06
ENY4076 - 6 2026-07-18
ENY3966 Envoy Air 6 2026-05-26
ENY3946 Envoy Air 6 2026-05-09
ENY3680 - 6 2026-06-23
ENY3576 - 6 2026-07-10
ENY3428 - 6 2026-07-07
ENY4171 Envoy Air 5 2026-05-02
ENY4147 - 5 2026-06-21
ENY4091 Envoy Air 5 2026-05-15
ENY3978 - 5 2026-06-19
ENY3820 - 5 2026-06-21
ENY3794 Envoy Air 5 2026-05-08
ENY3773 - 5 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3342 MEM → PHX Jul 26, 14:10 UTCJul 26, 14:35 UTC25m
2026-07-26 ENY3342 MEM → PHX Jul 26, 12:20 UTCJul 26, 12:35 UTC15m
2026-07-25 ENY3376 CMH → MIA Jul 25, 23:40 UTCJul 26, 02:05 UTC2h 25m
2026-07-25 ENY3376 CMH → MIA Jul 25, 23:37 UTCJul 26, 02:06 UTC2h 29m
2026-07-25 ENY4072 CZM → MIA Jul 25, 20:40 UTCJul 25, 22:00 UTC1h 20m
2026-07-25 ENY4072 CZM → MIA Jul 25, 20:35 UTCJul 25, 21:58 UTC1h 23m
2026-07-25 ENY4072 CZM → MIA Jul 25, 18:15 UTCJul 25, 19:35 UTC1h 20m
2026-07-25 ENY3338 MSY → DFW Jul 25, 16:15 UTCJul 25, 16:40 UTC25m
2026-07-25 ENY3338 MSY → DFW Jul 25, 15:53 UTCJul 25, 16:38 UTC45m
2026-07-25 ENY3338 MSY → DFW Jul 25, 14:10 UTCJul 25, 14:30 UTC20m
2026-07-25 ENY4046 CID → MIA Jul 25, 10:10 UTCJul 25, 12:50 UTC2h 40m
2026-07-25 ENY3933 LEX → ORD Jul 25, 02:40 UTCJul 25, 04:35 UTC1h 55m
2026-07-25 ENY3933 LEX → ORD Jul 25, 02:36 UTCJul 25, 04:35 UTC1h 59m
2026-07-24 ENY3440 CMI → ORD Jul 24, 22:40 UTCJul 25, 01:40 UTC3h 0m
2026-07-24 ENY3440 CMI → ORD Jul 24, 22:39 UTCJul 25, 01:34 UTC2h 55m
2026-07-24 ENY3440 CMI → ORD Jul 24, 19:00 UTCJul 24, 21:30 UTC2h 30m
2026-07-24 ENY4031 ELP → AUS Jul 24, 16:45 UTCJul 24, 17:55 UTC1h 10m
2026-07-24 ENY4031 ELP → AUS Jul 24, 14:45 UTCJul 24, 15:50 UTC1h 5m
2026-07-24 ENY3984 BZN → AUS Jul 24, 12:00 UTCJul 24, 13:35 UTC1h 35m
2026-07-24 ENY3611 ILM → BOS Jul 24, 02:50 UTCJul 24, 03:10 UTC20m
2026-07-23 ENY3449 MIA → BWI Jul 23, 23:35 UTCJul 24, 01:50 UTC2h 15m
2026-07-23 ENY3449 MIA → BWI Jul 23, 20:35 UTCJul 23, 22:35 UTC2h 0m
2026-07-23 ENY3384 CHS → DCA Jul 23, 18:45 UTCJul 23, 19:30 UTC45m
2026-07-23 ENY3384 CHS → DCA Jul 23, 16:30 UTCJul 23, 17:15 UTC45m
2026-07-23 ENY4100 HRL → DFW Jul 23, 14:10 UTCJul 23, 15:10 UTC1h 0m
2026-07-23 ENY4100 HRL → DFW Jul 23, 12:15 UTCJul 23, 13:10 UTC55m
2026-07-23 ENY3617 SDF → ORD Jul 23, 10:10 UTCJul 23, 10:55 UTC45m
2026-07-23 ENY3615 ICT → ORD Jul 23, 06:05 UTCJul 23, 06:45 UTC40m
2026-07-23 ENY3642 DFW → LIT Jul 23, 01:20 UTCJul 23, 02:20 UTC1h 0m
2026-07-22 ENY3642 DFW → LIT Jul 22, 23:30 UTCJul 23, 00:35 UTC1h 5m
2026-07-22 ENY3795 - Jul 22, 20:55 UTCJul 22, 21:55 UTC1h 0m
2026-07-22 ENY3795 - Jul 22, 19:10 UTCJul 22, 20:05 UTC55m
2026-07-22 ENY4142 ORD → GRR Jul 22, 16:50 UTCJul 22, 17:50 UTC1h 0m
2026-07-22 ENY4142 ORD → GRR Jul 22, 15:05 UTCJul 22, 15:55 UTC50m
2026-07-22 ENY4290 MSY → MIA Jul 22, 12:35 UTCJul 22, 14:10 UTC1h 35m
2026-07-22 ENY4291 ORD → FCA Jul 22, 01:10 UTCJul 22, 02:50 UTC1h 40m
2026-07-22 ENY4291 ORD → FCA Jul 22, 01:10 UTCJul 22, 02:45 UTC1h 35m
2026-07-21 ENY3384 CHS → DCA Jul 21, 18:30 UTCJul 21, 19:30 UTC1h 0m
2026-07-21 ENY3384 CHS → DCA Jul 21, 16:35 UTCJul 21, 17:15 UTC40m
2026-07-20 ENY3999 DTW → DCA Jul 20, 20:30 UTCJul 20, 21:25 UTC55m
2026-07-20 ENY3999 DTW → DCA Jul 20, 18:20 UTCJul 20, 19:05 UTC45m
2026-07-20 ENY3503 YYZ → ORD Jul 20, 15:05 UTCJul 20, 16:40 UTC1h 35m
2026-07-20 ENY3503 YYZ → ORD Jul 20, 12:35 UTCJul 20, 14:15 UTC1h 40m
2026-07-20 ENY3394 HSV → DFW Jul 20, 10:10 UTCJul 20, 11:35 UTC1h 25m
2026-07-20 ENY3394 HSV → DFW Jul 20, 10:09 UTCJul 20, 11:32 UTC1h 23m
2026-07-20 ENY4278 DFW → HSV Jul 20, 04:00 UTCJul 20, 05:30 UTC1h 30m
2026-07-20 ENY3925 BNA → DFW Jul 20, 01:15 UTCJul 20, 02:50 UTC1h 35m
2026-07-19 ENY3823 DFW → LRD Jul 19, 22:05 UTCJul 19, 23:35 UTC1h 30m
2026-07-19 ENY3823 DFW → LRD Jul 19, 19:40 UTCJul 19, 21:10 UTC1h 30m
2026-07-19 ENY3825 STL → BOS Jul 19, 17:15 UTCJul 19, 18:50 UTC1h 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 N276NN page for operator, model, and routing details .

Mode-S A2BDFF frequently asked

What is Mode-S code A2BDFF?
A2BDFF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N276NN.
Where is Mode-S A2BDFF registered?
Mode-S code A2BDFF 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 A2BDFF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2BDFF, octal 50536777, decimal 10,665,471.
What flights does A2BDFF operate?
Mode-S A2BDFF has broadcast 20 distinct callsigns, including ENY3382, ENY4031, ENY4300, ENY4178, ENY4114.