Apparatus

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sensors Mode-S transponder

A19AAA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N202NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A19AAA
Octal
50315252
Decimal
10,590,890
Country
US
Tail
N202NN
Type
E75L
No current signal · last broadcast Jul 26, 20:55 UTC
Flights observed
743
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:55 UTC

Last known position

Most recent position reported by Mode-S A19AAA.

Country allocation

The ICAO 24-bit address A19AAA 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
ENY4112 Envoy Air 12 2026-04-30
ENY3458 Envoy Air 9 2026-07-23
ENY3466 - 8 2026-07-12
ENY3460 Envoy Air 8 2026-07-24
ENY4106 Envoy Air 7 2026-06-22
ENY3496 Envoy Air 7 2026-07-23
ENY3470 - 7 2026-06-28
ENY3406 Envoy Air 7 2026-07-24
ENY4130 - 6 2026-07-07
ENY4093 Envoy Air 6 2026-05-01
ENY3980 Envoy Air 6 2026-07-22
ENY3708 - 6 2026-07-07
ENY3653 - 6 2026-07-02
ENY3602 - 6 2026-07-13
ENY3551 - 6 2026-07-20
ENY3543 Envoy Air 6 2026-04-30
ENY3462 Envoy Air 6 2026-05-30
ENY3455 - 6 2026-07-23
ENY4291 Envoy Air 5 2026-05-22
ENY4153 Envoy Air 5 2026-06-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3552 CVG → DCA Jul 26, 19:55 UTCJul 26, 20:55 UTC1h 0m
2026-07-26 ENY3844 ORD → EYW Jul 26, 16:15 UTCJul 26, 17:40 UTC1h 25m
2026-07-26 ENY3844 ORD → EYW Jul 26, 13:20 UTCJul 26, 14:40 UTC1h 20m
2026-07-26 ENY3404 PHX → FAR Jul 26, 10:10 UTCJul 26, 11:50 UTC1h 40m
2026-07-26 ENY3404 PHX → FAR Jul 26, 10:06 UTCJul 26, 11:46 UTC1h 40m
2026-07-25 ENY4329 ORD → MVY Jul 25, 23:05 UTCJul 26, 01:30 UTC2h 25m
2026-07-25 ENY3793 TLH → DCA Jul 25, 18:33 UTCJul 25, 21:32 UTC2h 59m
2026-07-25 ENY3793 TLH → DCA Jul 25, 18:35 UTCJul 25, 21:35 UTC3h 0m
2026-07-25 ENY3793 TLH → DCA Jul 25, 14:35 UTCJul 25, 17:10 UTC2h 35m
2026-07-25 ENY3907 JAX → ORD Jul 25, 11:10 UTCJul 25, 13:00 UTC1h 50m
2026-07-25 ENY3907 JAX → ORD Jul 25, 11:08 UTCJul 25, 12:57 UTC1h 49m
2026-07-25 ENY3913 ORD → ICT Jul 25, 02:40 UTCJul 25, 04:00 UTC1h 20m
2026-07-25 ENY3913 ORD → ICT Jul 25, 02:38 UTCJul 25, 03:59 UTC1h 21m
2026-07-24 ENY3406 PIA → DFW Jul 24, 23:35 UTCJul 25, 00:55 UTC1h 20m
2026-07-24 ENY3406 PIA → DFW Jul 24, 20:40 UTCJul 24, 21:50 UTC1h 10m
2026-07-24 ENY3811 MHT → ORD Jul 24, 17:40 UTCJul 24, 19:20 UTC1h 40m
2026-07-24 ENY3811 MHT → ORD Jul 24, 17:33 UTCJul 24, 19:19 UTC1h 46m
2026-07-24 ENY3613 DFW → AMA Jul 24, 14:50 UTCJul 24, 16:20 UTC1h 30m
2026-07-24 ENY3613 DFW → AMA Jul 24, 14:47 UTCJul 24, 16:30 UTC1h 43m
2026-07-24 ENY3460 DFW → HRL Jul 24, 10:55 UTCJul 24, 12:45 UTC1h 50m
2026-07-24 ENY3463 HUX → DFW Jul 24, 02:40 UTCJul 24, 04:10 UTC1h 30m
2026-07-23 ENY3458 IND → ORD Jul 23, 23:55 UTCJul 24, 00:30 UTC35m
2026-07-23 ENY3458 IND → ORD Jul 23, 23:52 UTCJul 24, 00:37 UTC45m
2026-07-23 ENY3458 IND → ORD Jul 23, 22:20 UTCJul 23, 22:55 UTC35m
2026-07-23 ENY3455 - Jul 23, 17:15 UTCJul 23, 18:05 UTC50m
2026-07-23 ENY3455 - Jul 23, 15:15 UTCJul 23, 15:55 UTC40m
2026-07-23 ENY3496 MLI → DFW Jul 23, 11:35 UTCJul 23, 13:45 UTC2h 10m
2026-07-23 ENY3499 TRI → DFW Jul 23, 01:05 UTCJul 23, 02:35 UTC1h 30m
2026-07-23 ENY3499 TRI → DFW Jul 23, 01:00 UTCJul 23, 02:38 UTC1h 38m
2026-07-22 ENY3980 ABQ → ORD Jul 22, 22:25 UTCJul 22, 23:15 UTC50m
2026-07-22 ENY3980 ABQ → ORD Jul 22, 20:25 UTCJul 22, 21:10 UTC45m
2026-07-22 ENY3961 - Jul 22, 18:10 UTCJul 22, 19:05 UTC55m
2026-07-22 ENY4163 - Jul 22, 15:05 UTCJul 22, 17:20 UTC2h 15m
2026-07-22 ENY4163 MIA → CMH Jul 22, 15:01 UTCJul 22, 17:16 UTC2h 15m
2026-07-22 ENY4052 - Jul 22, 11:20 UTCJul 22, 13:35 UTC2h 15m
2026-07-21 ENY4087 CLT → XNA Jul 21, 22:35 UTCJul 22, 00:15 UTC1h 40m
2026-07-21 ENY4087 CLT → XNA Jul 21, 22:31 UTCJul 22, 00:14 UTC1h 43m
2026-07-21 ENY4060 - Jul 21, 18:30 UTCJul 21, 20:00 UTC1h 30m
2026-07-21 ENY4060 - Jul 21, 15:50 UTCJul 21, 17:30 UTC1h 40m
2026-07-21 ENY4158 - Jul 21, 12:25 UTCJul 21, 13:50 UTC1h 25m
2026-07-21 ENY4158 LIT → CLT Jul 21, 12:16 UTCJul 21, 13:46 UTC1h 30m
2026-07-21 ENY4079 DFW → LIT Jul 21, 02:40 UTCJul 21, 03:20 UTC40m
2026-07-20 ENY3677 ORD → MSN Jul 20, 23:55 UTCJul 21, 01:05 UTC1h 10m
2026-07-20 ENY3677 ORD → MSN Jul 20, 21:45 UTCJul 20, 22:50 UTC1h 5m
2026-07-20 ENY3636 - Jul 20, 19:20 UTCJul 20, 20:05 UTC45m
2026-07-20 ENY3636 - Jul 20, 17:10 UTCJul 20, 17:50 UTC40m
2026-07-20 ENY3551 - Jul 20, 15:15 UTCJul 20, 15:50 UTC35m
2026-07-20 ENY3551 GRK → DFW Jul 20, 15:10 UTCJul 20, 15:44 UTC34m
2026-07-20 ENY3551 - Jul 20, 14:00 UTCJul 20, 14:25 UTC25m
2026-07-20 ENY3353 - Jul 20, 10:45 UTCJul 20, 12:00 UTC1h 15m

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 N202NN page for operator, model, and routing details .

Mode-S A19AAA frequently asked

What is Mode-S code A19AAA?
A19AAA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N202NN.
Where is Mode-S A19AAA registered?
Mode-S code A19AAA 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 A19AAA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A19AAA, octal 50315252, decimal 10,590,890.
What flights does A19AAA operate?
Mode-S A19AAA has broadcast 20 distinct callsigns, including ENY4112, ENY3458, ENY3466, ENY3460, ENY4106.