Apparatus

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sensors Mode-S transponder

A28B5B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N263NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A28B5B
Octal
50505533
Decimal
10,652,507
Country
US
Tail
N263NN
Type
E75L
No current signal · last broadcast 53m ago
Flights observed
348
Distinct callsigns
20
Country
US
Last broadcast
53m ago

Last known position

Most recent position reported by Mode-S A28B5B.

Country allocation

The ICAO 24-bit address A28B5B 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
ENY3878 Envoy Air 6 2026-06-11
ENY3781 Envoy Air 6 2026-06-10
ENY3560 - 6 2026-06-16
ENY4095 - 5 2026-06-23
ENY3844 Envoy Air 5 2026-06-16
ENY3535 Envoy Air 5 2026-05-22
ENY3449 Envoy Air 5 2026-06-04
ENY4140 Envoy Air 4 2026-05-13
ENY3936 Envoy Air 4 2026-06-21
ENY3924 Envoy Air 4 2026-06-03
ENY3542 - 4 2026-06-19
ENY3482 Envoy Air 4 2026-06-10
ENY3462 Envoy Air 4 2026-06-17
ENY3429 Envoy Air 4 2026-06-03
ENY3399 - 4 2026-06-22
ENY3381 Envoy Air 4 2026-06-06
ENY4292 Envoy Air 3 2026-06-03
ENY4277 - 3 2026-06-23
ENY4201 Envoy Air 3 2026-05-23
ENY4143 Envoy Air 3 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-27 ENY4046 - Jun 27, 10:14 UTCJun 27, 12:45 UTC2h 30m
2026-06-27 ENY3913 - Jun 27, 02:39 UTCJun 27, 04:05 UTC1h 25m
2026-06-27 ENY3717 - Jun 27, 00:44 UTCJun 27, 01:39 UTC55m
2026-06-26 ENY3717 - Jun 26, 23:15 UTCJun 26, 23:39 UTC25m
2026-06-26 ENY3428 - Jun 26, 20:04 UTCJun 26, 21:45 UTC1h 40m
2026-06-26 ENY3428 BIL → ORD Jun 26, 19:20 UTCJun 26, 21:43 UTC2h 23m
2026-06-26 ENY3428 - Jun 26, 15:49 UTCJun 26, 17:35 UTC1h 45m
2026-06-26 ENY3894 - Jun 26, 12:39 UTCJun 26, 13:40 UTC1h 0m
2026-06-26 ENY3894 CVG → ORD Jun 26, 12:39 UTCJun 26, 13:33 UTC54m
2026-06-25 ENY3408 BOS → CVG Jun 25, 22:34 UTCJun 26, 00:50 UTC2h 15m
2026-06-25 ENY3470 - Jun 25, 20:05 UTCJun 25, 21:29 UTC1h 25m
2026-06-25 ENY3470 CMH → BOS Jun 25, 20:00 UTCJun 25, 21:28 UTC1h 28m
2026-06-25 ENY3470 BOS → CMH Jun 25, 17:25 UTCJun 25, 19:09 UTC1h 45m
2026-06-25 ENY4106 ORD → BOS Jun 25, 14:20 UTCJun 25, 16:05 UTC1h 45m
2026-06-25 ENY3460 - Jun 25, 10:39 UTCJun 25, 12:44 UTC2h 5m
2026-06-25 ENY3460 ALB → ORD Jun 25, 10:36 UTCJun 25, 12:35 UTC1h 59m
2026-06-25 ENY3463 - Jun 25, 04:10 UTCJun 25, 05:35 UTC1h 25m
2026-06-24 ENY3908 - Jun 24, 19:04 UTCJun 24, 20:35 UTC1h 30m
2026-06-24 ENY3908 RAP → ORD Jun 24, 18:53 UTCJun 24, 20:33 UTC1h 40m
2026-06-24 ENY3891 - Jun 24, 16:14 UTCJun 24, 17:50 UTC1h 35m
2026-06-24 ENY3810 MTY → DFW Jun 24, 13:14 UTCJun 24, 14:45 UTC1h 30m
2026-06-24 ENY3810 MTY → DFW Jun 24, 13:15 UTCJun 24, 14:40 UTC1h 25m
2026-06-24 ENY3459 DFW → MTY Jun 24, 02:40 UTCJun 24, 03:55 UTC1h 15m
2026-06-23 ENY3505 MSN → CLT Jun 23, 23:29 UTCJun 24, 00:55 UTC1h 25m
2026-06-23 ENY3505 MSN → CLT Jun 23, 23:28 UTCJun 24, 00:46 UTC1h 18m
2026-06-23 ENY3505 MSN → CLT Jun 23, 19:59 UTCJun 23, 21:14 UTC1h 15m
2026-06-23 ENY4095 - Jun 23, 18:04 UTCJun 23, 18:45 UTC40m
2026-06-23 ENY4095 AUS → DFW Jun 23, 18:02 UTCJun 23, 18:44 UTC42m
2026-06-23 ENY4095 DFW → AUS Jun 23, 16:24 UTCJun 23, 16:59 UTC35m
2026-06-23 ENY4277 - Jun 23, 12:49 UTCJun 23, 15:15 UTC2h 25m
2026-06-23 ENY4277 RAP → DFW Jun 23, 12:33 UTCJun 23, 15:12 UTC2h 39m
2026-06-23 ENY3567 - Jun 23, 01:15 UTCJun 23, 02:55 UTC1h 40m
2026-06-22 ENY4152 - Jun 22, 22:15 UTCJun 23, 00:04 UTC1h 50m
2026-06-22 ENY4152 DFW → SDF Jun 22, 19:40 UTCJun 22, 21:25 UTC1h 45m
2026-06-22 ENY3399 - Jun 22, 16:29 UTCJun 22, 18:30 UTC2h 0m
2026-06-22 ENY3399 - Jun 22, 13:35 UTCJun 22, 15:14 UTC1h 40m
2026-06-22 ENY3951 - Jun 22, 10:19 UTCJun 22, 12:15 UTC1h 55m
2026-06-22 ENY4308 - Jun 22, 02:30 UTCJun 22, 03:30 UTC1h 0m
2026-06-22 ENY4308 DFW → GPT Jun 22, 02:27 UTCJun 22, 03:34 UTC1h 7m
2026-06-21 ENY3936 CMH → ORD Jun 21, 22:44 UTCJun 22, 00:50 UTC2h 5m
2026-06-21 ENY3936 CMH → ORD Jun 21, 19:39 UTCJun 21, 21:44 UTC2h 5m
2026-06-21 ENY3768 RAP → DFW Jun 21, 16:25 UTCJun 21, 18:14 UTC1h 49m
2026-06-21 ENY3768 - Jun 21, 13:24 UTCJun 21, 16:44 UTC3h 20m
2026-06-21 ENY4179 - Jun 21, 11:20 UTCJun 21, 12:10 UTC50m
2026-06-21 ENY3537 - Jun 21, 04:10 UTCJun 21, 04:44 UTC35m
2026-06-21 ENY3537 DFW → FSM Jun 21, 04:07 UTCJun 21, 04:49 UTC42m
2026-06-21 ENY3787 - Jun 21, 01:19 UTCJun 21, 02:40 UTC1h 20m
2026-06-20 ENY3787 - Jun 20, 23:10 UTCJun 21, 00:19 UTC1h 10m
2026-06-20 ENY3870 DFW → LRD Jun 20, 18:49 UTCJun 20, 19:44 UTC55m
2026-06-20 ENY4142 ORD → GRR Jun 20, 16:39 UTCJun 20, 17:34 UTC55m

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 N263NN page for operator, model, and routing details .

Mode-S A28B5B frequently asked

What is Mode-S code A28B5B?
A28B5B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N263NN.
Where is Mode-S A28B5B registered?
Mode-S code A28B5B 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 A28B5B broadcasting right now?
No active broadcast right now. Last signal was 53m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A28B5B, octal 50505533, decimal 10,652,507.
What flights does A28B5B operate?
Mode-S A28B5B has broadcast 20 distinct callsigns, including ENY3878, ENY3781, ENY3560, ENY4095, ENY3844.