Apparatus

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sensors Mode-S transponder

A26B4A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N255NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A26B4A
Octal
50465512
Decimal
10,644,298
Country
US
Tail
N255NN
Type
E75L
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
745
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A26B4A.

Country allocation

The ICAO 24-bit address A26B4A 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
ENY4085 - 10 2026-07-09
ENY4256 Envoy Air 9 2026-06-09
ENY4186 Envoy Air 9 2026-05-26
ENY3991 - 9 2026-06-24
ENY3997 - 8 2026-06-26
ENY3980 - 8 2026-07-18
ENY3691 Envoy Air 8 2026-06-12
ENY3455 - 8 2026-07-08
ENY4080 Envoy Air 7 2026-06-04
ENY4040 Envoy Air 7 2026-05-12
ENY3576 Envoy Air 7 2026-05-25
ENY3523 - 7 2026-07-08
ENY3411 Envoy Air 7 2026-05-30
ENY3961 - 6 2026-07-16
ENY3742 - 6 2026-06-26
ENY3729 Envoy Air 6 2026-06-03
ENY3690 - 6 2026-07-06
ENY3630 - 6 2026-06-15
ENY3504 Envoy Air 6 2026-06-01
ENY4214 - 5 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3999 DTW → DCA Jul 26, 20:40 UTCJul 26, 21:30 UTC50m
2026-07-26 ENY3999 DTW → DCA Jul 26, 18:30 UTCJul 26, 19:20 UTC50m
2026-07-26 ENY3924 CMI → DFW Jul 26, 13:50 UTCJul 26, 15:45 UTC1h 55m
2026-07-26 ENY3924 CMI → DFW Jul 26, 12:59 UTCJul 26, 15:41 UTC2h 42m
2026-07-26 ENY4063 PHX → IAH Jul 26, 01:20 UTCJul 26, 03:20 UTC2h 0m
2026-07-26 ENY4063 PHX → IAH Jul 26, 01:15 UTCJul 26, 04:36 UTC3h 21m
2026-07-25 ENY3538 ORD → CMH Jul 25, 21:25 UTCJul 25, 23:30 UTC2h 5m
2026-07-25 ENY3538 ORD → CMH Jul 25, 21:23 UTCJul 25, 23:27 UTC2h 4m
2026-07-25 ENY3538 ORD → CMH Jul 25, 18:30 UTCJul 25, 20:25 UTC1h 55m
2026-07-25 ENY3503 YYZ → ORD Jul 25, 15:20 UTCJul 25, 17:00 UTC1h 40m
2026-07-25 ENY3503 YYZ → ORD Jul 25, 12:50 UTCJul 25, 14:30 UTC1h 40m
2026-07-25 ENY3532 RAP → DFW Jul 25, 00:10 UTCJul 25, 02:10 UTC2h 0m
2026-07-24 ENY3532 RAP → DFW Jul 24, 21:15 UTCJul 24, 23:00 UTC1h 45m
2026-07-24 ENY4084 MSN → MIA Jul 24, 18:55 UTCJul 24, 19:40 UTC45m
2026-07-24 ENY4084 MSN → MIA Jul 24, 17:20 UTCJul 24, 18:05 UTC45m
2026-07-24 ENY3551 DCA → CVG Jul 24, 15:25 UTCJul 24, 16:05 UTC40m
2026-07-24 ENY3551 DCA → CVG Jul 24, 13:50 UTCJul 24, 14:10 UTC20m
2026-07-24 ENY3364 DCA → BTV Jul 24, 11:20 UTCJul 24, 12:05 UTC45m
2026-07-23 ENY9872 CVG → ORD Jul 23, 04:30 UTCJul 23, 05:25 UTC55m
2026-07-22 ENY3579 DOM → MIA Jul 22, 22:40 UTCJul 23, 00:00 UTC1h 20m
2026-07-22 ENY3676 MIA → CVG Jul 22, 20:05 UTCJul 22, 21:15 UTC1h 10m
2026-07-22 ENY3676 MIA → CVG Jul 22, 18:00 UTCJul 22, 19:00 UTC1h 0m
2026-07-22 ENY4005 TRC → DFW Jul 22, 15:35 UTCJul 22, 16:15 UTC40m
2026-07-22 ENY4005 TRC → DFW Jul 22, 13:40 UTCJul 22, 14:20 UTC40m
2026-07-22 ENY4050 DFW → XNA Jul 22, 11:40 UTCJul 22, 12:10 UTC30m
2026-07-22 ENY3569 DFW → GRK Jul 22, 03:55 UTCJul 22, 04:20 UTC25m
2026-07-22 ENY3621 - Jul 22, 00:05 UTCJul 22, 02:05 UTC2h 0m
2026-07-21 ENY3621 - Jul 21, 22:10 UTCJul 21, 23:05 UTC55m
2026-07-21 ENY3621 - Jul 21, 19:05 UTCJul 21, 21:15 UTC2h 10m
2026-07-21 ENY3632 ORD → LEX Jul 21, 16:45 UTCJul 21, 17:25 UTC40m
2026-07-21 ENY3632 ORD → LEX Jul 21, 14:55 UTCJul 21, 15:30 UTC35m
2026-07-21 ENY3373 MHK → DFW Jul 21, 11:10 UTCJul 21, 13:25 UTC2h 15m
2026-07-21 ENY3377 BUF → ORD Jul 21, 02:50 UTCJul 21, 04:25 UTC1h 35m
2026-07-20 ENY4164 BNA → ORD Jul 20, 23:05 UTCJul 21, 00:55 UTC1h 49m
2026-07-20 ENY4164 BNA → ORD Jul 20, 20:15 UTCJul 20, 22:00 UTC1h 45m
2026-07-20 ENY3498 PHX → STS Jul 20, 17:40 UTCJul 20, 18:35 UTC55m
2026-07-20 ENY3498 PHX → STS Jul 20, 17:37 UTCJul 20, 18:30 UTC53m
2026-07-20 ENY3498 PHX → STS Jul 20, 15:50 UTCJul 20, 16:40 UTC50m
2026-07-20 ENY3894 CVG → ORD Jul 20, 13:15 UTCJul 20, 14:10 UTC55m
2026-07-20 ENY3894 CVG → ORD Jul 20, 13:12 UTCJul 20, 14:00 UTC48m
2026-07-19 ENY3408 MEM → ORD Jul 19, 23:00 UTCJul 20, 00:50 UTC1h 50m
2026-07-19 ENY3470 MDT → ORD Jul 19, 19:45 UTCJul 19, 21:10 UTC1h 25m
2026-07-19 ENY3470 MDT → ORD Jul 19, 19:43 UTCJul 19, 21:14 UTC1h 31m
2026-07-19 ENY3470 MDT → ORD Jul 19, 17:00 UTCJul 19, 18:40 UTC1h 40m
2026-07-19 ENY4106 ORD → BOS Jul 19, 14:05 UTCJul 19, 16:00 UTC1h 55m
2026-07-19 ENY3751 ELP → AUS Jul 19, 10:45 UTCJul 19, 12:55 UTC2h 10m
2026-07-19 ENY3751 ELP → AUS Jul 19, 10:43 UTCJul 19, 12:45 UTC2h 2m
2026-07-19 ENY3752 - Jul 19, 02:40 UTCJul 19, 04:15 UTC1h 35m
2026-07-19 ENY3752 ORD → HPN Jul 19, 02:36 UTCJul 19, 04:14 UTC1h 38m
2026-07-18 ENY3980 - Jul 18, 23:50 UTCJul 19, 00:50 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 N255NN page for operator, model, and routing details .

Mode-S A26B4A frequently asked

What is Mode-S code A26B4A?
A26B4A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N255NN.
Where is Mode-S A26B4A registered?
Mode-S code A26B4A 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 A26B4A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A26B4A, octal 50465512, decimal 10,644,298.
What flights does A26B4A operate?
Mode-S A26B4A has broadcast 20 distinct callsigns, including ENY4085, ENY4256, ENY4186, ENY3991, ENY3997.