Apparatus

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sensors Mode-S transponder

A27A26

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N259NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A27A26
Octal
50475046
Decimal
10,648,102
Country
US
Tail
N259NN
Type
E75L
No current signal · last broadcast Jul 26, 19:45 UTC
Flights observed
748
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:45 UTC

Last known position

Most recent position reported by Mode-S A27A26.

Country allocation

The ICAO 24-bit address A27A26 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
ENY3498 Envoy Air 10 2026-07-19
ENY3969 - 9 2026-07-09
ENY3679 Envoy Air 8 2026-04-21
ENY4099 - 7 2026-07-02
ENY3618 - 7 2026-07-01
ENY3507 Envoy Air 7 2026-05-20
ENY3388 - 7 2026-07-02
ENY4132 Envoy Air 6 2026-05-18
ENY4031 - 6 2026-06-15
ENY3927 Envoy Air 6 2026-07-26
ENY3878 Envoy Air 6 2026-04-27
ENY3770 Envoy Air 6 2026-07-04
ENY4116 Envoy Air 5 2026-05-25
ENY4035 Envoy Air 5 2026-06-14
ENY3998 - 5 2026-07-03
ENY3981 Envoy Air 5 2026-04-26
ENY3882 Envoy Air 5 2026-06-16
ENY3874 - 5 2026-06-16
ENY3796 - 5 2026-06-25
ENY3793 Envoy Air 5 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3927 PWM → ORD Jul 26, 19:20 UTCJul 26, 19:45 UTC25m
2026-07-26 ENY3927 PWM → ORD Jul 26, 17:00 UTCJul 26, 17:25 UTC25m
2026-07-26 ENY3609 SJT → DFW Jul 26, 14:15 UTCJul 26, 15:05 UTC50m
2026-07-26 ENY3609 SJT → DFW Jul 26, 14:10 UTCJul 26, 15:02 UTC52m
2026-07-26 ENY3609 SJT → DFW Jul 26, 12:15 UTCJul 26, 13:05 UTC50m
2026-07-26 ENY3877 ORD → ELP Jul 26, 10:05 UTCJul 26, 11:00 UTC55m
2026-07-26 ENY3619 MIA → CVG Jul 26, 01:30 UTCJul 26, 03:25 UTC1h 55m
2026-07-25 ENY4084 MSN → MIA Jul 25, 19:05 UTCJul 25, 20:00 UTC55m
2026-07-25 ENY4084 MSN → MIA Jul 25, 17:30 UTCJul 25, 18:15 UTC45m
2026-07-25 ENY3551 DCA → CVG Jul 25, 15:15 UTCJul 25, 15:50 UTC35m
2026-07-25 ENY3551 DCA → CVG Jul 25, 13:55 UTCJul 25, 14:20 UTC25m
2026-07-25 ENY3951 CMH → ORD Jul 25, 10:30 UTCJul 25, 11:50 UTC1h 20m
2026-07-25 ENY3951 CMH → ORD Jul 25, 10:27 UTCJul 25, 11:45 UTC1h 18m
2026-07-25 ENY4308 ORD → EYW Jul 25, 02:25 UTCJul 25, 03:35 UTC1h 10m
2026-07-25 ENY4113 ILM → MIA Jul 25, 00:10 UTCJul 25, 01:10 UTC1h 0m
2026-07-24 ENY4113 ILM → MIA Jul 24, 21:45 UTCJul 24, 22:45 UTC1h 0m
2026-07-24 ENY4130 CLE → ORD Jul 24, 19:50 UTCJul 24, 20:40 UTC50m
2026-07-24 ENY4130 CLE → ORD Jul 24, 19:49 UTCJul 24, 20:28 UTC39m
2026-07-24 ENY4130 CLE → ORD Jul 24, 18:15 UTCJul 24, 18:50 UTC35m
2026-07-24 ENY4142 ORD → GRR Jul 24, 16:35 UTCJul 24, 17:25 UTC50m
2026-07-24 ENY4142 ORD → GRR Jul 24, 14:40 UTCJul 24, 15:45 UTC1h 5m
2026-07-24 ENY3737 SBP → PHX Jul 24, 12:40 UTCJul 24, 13:15 UTC35m
2026-07-24 ENY3705 MHK → ORD Jul 24, 00:15 UTCJul 24, 00:35 UTC20m
2026-07-23 ENY3400 GRR → ORD Jul 23, 22:30 UTCJul 23, 23:10 UTC40m
2026-07-23 ENY3400 GRR → ORD Jul 23, 20:55 UTCJul 23, 21:30 UTC35m
2026-07-23 ENY3776 BOS → ORD Jul 23, 17:50 UTCJul 23, 19:10 UTC1h 20m
2026-07-23 ENY3776 BOS → ORD Jul 23, 15:10 UTCJul 23, 16:15 UTC1h 5m
2026-07-23 ENY3776 BOS → ORD Jul 23, 15:08 UTCJul 23, 16:39 UTC1h 31m
2026-07-23 ENY3985 DCA → GRR Jul 23, 12:45 UTCJul 23, 13:40 UTC55m
2026-07-23 ENY4105 ORD → XNA Jul 23, 00:15 UTCJul 23, 01:30 UTC1h 15m
2026-07-22 ENY4023 CLT → ORD Jul 22, 20:20 UTCJul 22, 22:20 UTC2h 0m
2026-07-22 ENY4023 CLT → ORD Jul 22, 17:20 UTCJul 22, 19:00 UTC1h 40m
2026-07-22 ENY3872 - Jul 22, 13:15 UTCJul 22, 15:50 UTC2h 35m
2026-07-22 ENY3895 SGF → ORD Jul 22, 03:15 UTCJul 22, 05:25 UTC2h 10m
2026-07-22 ENY3479 PVD → ORD Jul 22, 01:00 UTCJul 22, 01:05 UTC5m
2026-07-21 ENY3479 PVD → ORD Jul 21, 23:55 UTCJul 22, 01:05 UTC1h 10m
2026-07-21 ENY3479 PVD → ORD Jul 21, 23:51 UTCJul 22, 00:43 UTC52m
2026-07-21 ENY3479 PVD → ORD Jul 21, 22:15 UTCJul 21, 23:00 UTC45m
2026-07-21 ENY3415 ORD → SDF Jul 21, 19:50 UTCJul 21, 20:30 UTC40m
2026-07-21 ENY3415 ORD → SDF Jul 21, 19:47 UTCJul 21, 20:27 UTC40m
2026-07-21 ENY3415 ORD → SDF Jul 21, 18:30 UTCJul 21, 19:05 UTC35m
2026-07-21 ENY3391 - Jul 21, 16:40 UTCJul 21, 17:25 UTC45m
2026-07-21 ENY3391 - Jul 21, 14:55 UTCJul 21, 15:40 UTC45m
2026-07-21 ENY3587 AVP → ORD Jul 21, 11:35 UTCJul 21, 13:15 UTC1h 40m
2026-07-21 ENY4140 LEX → ORD Jul 21, 03:00 UTCJul 21, 04:10 UTC1h 10m
2026-07-21 ENY4140 LEX → ORD Jul 21, 02:58 UTCJul 21, 04:15 UTC1h 17m
2026-07-20 ENY3717 - Jul 20, 23:55 UTCJul 21, 00:35 UTC40m
2026-07-20 ENY3717 MSN → ORD Jul 20, 23:54 UTCJul 21, 00:24 UTC30m
2026-07-20 ENY3717 - Jul 20, 22:35 UTCJul 20, 23:05 UTC30m
2026-07-20 ENY3453 - Jul 20, 17:50 UTCJul 20, 19:30 UTC1h 40m

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 N259NN page for operator, model, and routing details .

Mode-S A27A26 frequently asked

What is Mode-S code A27A26?
A27A26 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N259NN.
Where is Mode-S A27A26 registered?
Mode-S code A27A26 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 A27A26 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A27A26, octal 50475046, decimal 10,648,102.
What flights does A27A26 operate?
Mode-S A27A26 has broadcast 20 distinct callsigns, including ENY3498, ENY3969, ENY3679, ENY4099, ENY3618.