Apparatus

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sensors Mode-S transponder

A22003

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N236NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A22003
Octal
50420003
Decimal
10,625,027
Country
US
Tail
N236NN
Type
E75L
Broadcasting now · callsign ENY4011 · 26,000 ft
Flights observed
726
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:50 UTC

Current position

A22003 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A22003 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
ENY4291 Envoy Air 10 2026-06-02
ENY3628 Envoy Air 10 2026-07-25
ENY3731 - 9 2026-07-03
ENY3508 Envoy Air 9 2026-05-31
ENY3592 Envoy Air 8 2026-04-29
ENY4180 Envoy Air 7 2026-04-30
ENY3871 - 7 2026-07-15
ENY3560 - 7 2026-07-15
ENY3509 Envoy Air 7 2026-05-02
ENY3434 - 7 2026-06-13
ENY4155 - 6 2026-07-11
ENY4095 Envoy Air 6 2026-05-20
ENY4039 Envoy Air 6 2026-04-26
ENY3967 - 6 2026-07-08
ENY3915 Envoy Air 6 2026-07-26
ENY3835 Envoy Air 6 2026-05-26
ENY3657 - 6 2026-06-17
ENY3485 Envoy Air 6 2026-07-03
ENY4053 Envoy Air 5 2026-04-26
ENY3938 Envoy Air 5 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3554 CVG → MIA Jul 26, 18:35 UTCJul 26, 20:40 UTC2h 5m
2026-07-26 ENY3554 CVG → MIA Jul 26, 15:15 UTCJul 26, 17:25 UTC2h 10m
2026-07-26 ENY3915 CVG → DFW Jul 26, 12:15 UTCJul 26, 13:35 UTC1h 20m
2026-07-26 ENY3459 ORD → FAR Jul 26, 01:25 UTCJul 26, 02:45 UTC1h 20m
2026-07-26 ENY3459 ORD → FAR Jul 26, 01:22 UTCJul 26, 02:39 UTC1h 17m
2026-07-25 ENY3535 MIA → AUS Jul 25, 23:10 UTCJul 25, 23:45 UTC35m
2026-07-25 ENY3533 ORD → CMH Jul 25, 21:30 UTCJul 25, 22:20 UTC50m
2026-07-25 ENY3533 ORD → CMH Jul 25, 21:27 UTCJul 25, 22:03 UTC36m
2026-07-25 ENY3636 RDU → ORD Jul 25, 19:20 UTCJul 25, 20:05 UTC45m
2026-07-25 ENY3636 RDU → ORD Jul 25, 17:10 UTCJul 25, 17:50 UTC40m
2026-07-25 ENY3628 ATL → DCA Jul 25, 15:15 UTCJul 25, 16:00 UTC45m
2026-07-25 ENY3628 ATL → DCA Jul 25, 12:40 UTCJul 25, 13:15 UTC35m
2026-07-25 ENY3919 GRK → DFW Jul 25, 10:10 UTCJul 25, 10:45 UTC35m
2026-07-25 ENY3569 DFW → GRK Jul 25, 04:15 UTCJul 25, 04:35 UTC20m
2026-07-25 ENY3787 IND → DCA Jul 25, 01:20 UTCJul 25, 02:30 UTC1h 10m
2026-07-25 ENY3787 IND → DCA Jul 25, 01:16 UTCJul 25, 02:29 UTC1h 13m
2026-07-24 ENY3787 IND → DCA Jul 24, 23:05 UTCJul 25, 00:05 UTC1h 0m
2026-07-24 ENY3840 PIT → DCA Jul 24, 21:15 UTCJul 24, 22:05 UTC50m
2026-07-24 ENY3840 PIT → DCA Jul 24, 19:15 UTCJul 24, 20:10 UTC55m
2026-07-24 ENY4097 GSP → ORD Jul 24, 17:10 UTCJul 24, 18:15 UTC1h 5m
2026-07-24 ENY4097 GSP → ORD Jul 24, 15:25 UTCJul 24, 16:20 UTC55m
2026-07-24 ENY3941 CVG → ORD Jul 24, 13:15 UTCJul 24, 14:15 UTC1h 0m
2026-07-24 ENY3941 CVG → ORD Jul 24, 13:11 UTCJul 24, 14:15 UTC1h 4m
2026-07-24 ENY3903 ORD → MSN Jul 24, 01:55 UTCJul 24, 02:55 UTC1h 0m
2026-07-23 ENY3467 IND → BOS Jul 23, 23:35 UTCJul 24, 00:15 UTC40m
2026-07-23 ENY3467 IND → BOS Jul 23, 22:15 UTCJul 23, 22:45 UTC30m
2026-07-23 ENY3374 PHX → STS Jul 23, 19:45 UTCJul 23, 21:10 UTC1h 25m
2026-07-23 ENY3374 PHX → STS Jul 23, 17:30 UTCJul 23, 18:55 UTC1h 25m
2026-07-23 ENY3529 DFW → HOU Jul 23, 15:40 UTCJul 23, 16:25 UTC45m
2026-07-23 ENY3529 DFW → HOU Jul 23, 13:35 UTCJul 23, 14:10 UTC35m
2026-07-23 ENY4179 DTW → DFW Jul 23, 11:20 UTCJul 23, 12:00 UTC40m
2026-07-23 ENY3537 DFW → FSM Jul 23, 04:30 UTCJul 23, 05:05 UTC35m
2026-07-23 ENY3484 ORD → CMI Jul 23, 01:25 UTCJul 23, 02:25 UTC1h 0m
2026-07-22 ENY3484 ORD → CMI Jul 22, 23:35 UTCJul 23, 00:30 UTC55m
2026-07-22 ENY3547 MSY → MIA Jul 22, 20:35 UTCJul 22, 21:05 UTC30m
2026-07-22 ENY3547 MSY → MIA Jul 22, 19:20 UTCJul 22, 19:45 UTC25m
2026-07-22 ENY3687 AGU → DFW Jul 22, 16:35 UTCJul 22, 18:10 UTC1h 35m
2026-07-22 ENY3687 AGU → DFW Jul 22, 16:25 UTCJul 22, 18:09 UTC1h 44m
2026-07-22 ENY3687 AGU → DFW Jul 22, 13:55 UTCJul 22, 15:15 UTC1h 20m
2026-07-22 ENY3364 DCA → BTV Jul 22, 11:15 UTCJul 22, 12:00 UTC45m
2026-07-22 ENY3364 DCA → BTV Jul 22, 11:05 UTCJul 22, 11:55 UTC50m
2026-07-22 ENY3362 PHX → STS Jul 22, 03:25 UTCJul 22, 04:05 UTC40m
2026-07-21 ENY3803 - Jul 21, 23:40 UTCJul 22, 00:35 UTC55m
2026-07-21 ENY3803 - Jul 21, 21:40 UTCJul 21, 22:35 UTC55m
2026-07-21 ENY3986 HRL → DFW Jul 21, 17:55 UTCJul 21, 20:00 UTC2h 5m
2026-07-21 ENY3986 HRL → DFW Jul 21, 15:00 UTCJul 21, 16:55 UTC1h 55m
2026-07-21 ENY4024 - Jul 21, 10:50 UTCJul 21, 13:00 UTC2h 10m
2026-07-21 ENY4019 LTO → PHX Jul 21, 00:40 UTCJul 21, 02:45 UTC2h 5m
2026-07-20 ENY3652 ORD → MCI Jul 20, 20:00 UTCJul 20, 20:50 UTC50m
2026-07-20 ENY3652 ORD → MCI Jul 20, 19:57 UTCJul 20, 20:49 UTC52m

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 N236NN page for operator, model, and routing details .

Mode-S A22003 frequently asked

What is Mode-S code A22003?
A22003 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N236NN.
Where is Mode-S A22003 registered?
Mode-S code A22003 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 A22003 broadcasting right now?
Yes. Mode-S A22003 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A22003, octal 50420003, decimal 10,625,027.
What flights does A22003 operate?
Mode-S A22003 has broadcast 20 distinct callsigns, including ENY4291, ENY3628, ENY3731, ENY3508, ENY3592.