Apparatus

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sensors Mode-S transponder

A2FE21

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N292NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A2FE21
Octal
50577041
Decimal
10,681,889
Country
US
Tail
N292NN
Type
E75L
No current signal · last broadcast Jul 26, 21:50 UTC
Flights observed
726
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:50 UTC

Last known position

Most recent position reported by Mode-S A2FE21.

Country allocation

The ICAO 24-bit address A2FE21 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
ENY3430 - 8 2026-07-17
ENY4203 Envoy Air 7 2026-05-06
ENY3576 Envoy Air 7 2026-05-23
ENY3540 Envoy Air 7 2026-07-18
ENY4177 - 6 2026-06-30
ENY4153 - 6 2026-07-15
ENY4147 - 6 2026-06-15
ENY3961 - 6 2026-07-19
ENY3821 - 6 2026-06-30
ENY3454 - 6 2026-07-18
ENY3445 Envoy Air 6 2026-06-13
ENY3423 Envoy Air 6 2026-07-24
ENY4115 - 5 2026-06-18
ENY4085 - 5 2026-07-19
ENY3981 Envoy Air 5 2026-05-01
ENY3980 - 5 2026-07-02
ENY3690 - 5 2026-07-13
ENY3638 - 5 2026-06-18
ENY3609 Envoy Air 5 2026-05-31
ENY3606 - 5 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3936 CMH → ORD Jul 26, 19:40 UTCJul 26, 21:50 UTC2h 10m
2026-07-26 ENY3778 BOS → CMH Jul 26, 17:30 UTCJul 26, 18:20 UTC50m
2026-07-26 ENY3778 BOS → CMH Jul 26, 15:50 UTCJul 26, 16:30 UTC40m
2026-07-26 ENY3624 ORD → LSE Jul 26, 13:20 UTCJul 26, 14:15 UTC55m
2026-07-26 ENY3624 ORD → LSE Jul 26, 13:16 UTCJul 26, 14:10 UTC54m
2026-07-26 ENY4160 ORD → BNA Jul 26, 02:25 UTCJul 26, 04:05 UTC1h 40m
2026-07-26 ENY4160 ORD → BNA Jul 26, 01:00 UTCJul 26, 01:45 UTC45m
2026-07-26 ENY4160 ORD → BNA Jul 26, 00:58 UTCJul 26, 04:04 UTC3h 6m
2026-07-25 ENY4214 ORD → BOS Jul 25, 16:05 UTCJul 25, 16:25 UTC20m
2026-07-25 ENY4214 ORD → BOS Jul 25, 13:50 UTCJul 25, 14:05 UTC15m
2026-07-25 ENY3806 GSP → MIA Jul 25, 10:45 UTCJul 25, 12:30 UTC1h 45m
2026-07-25 ENY3435 ORD → RST Jul 25, 02:10 UTCJul 25, 03:40 UTC1h 30m
2026-07-25 ENY3435 ORD → RST Jul 25, 02:08 UTCJul 25, 03:37 UTC1h 29m
2026-07-25 ENY3517 ATL → CLT Jul 25, 00:25 UTCJul 25, 00:45 UTC20m
2026-07-24 ENY3517 ATL → CLT Jul 24, 22:15 UTCJul 24, 22:35 UTC20m
2026-07-24 ENY3419 RDU → CVG Jul 24, 18:05 UTCJul 24, 20:30 UTC2h 25m
2026-07-24 ENY3419 RDU → CVG Jul 24, 17:51 UTCJul 24, 20:30 UTC2h 39m
2026-07-24 ENY4175 PHX → ICT Jul 24, 14:20 UTCJul 24, 16:30 UTC2h 10m
2026-07-24 ENY3423 PVD → ORD Jul 24, 11:15 UTCJul 24, 12:55 UTC1h 40m
2026-07-24 ENY3423 PVD → ORD Jul 24, 11:10 UTCJul 24, 12:52 UTC1h 42m
2026-07-24 ENY3427 ORD → YYZ Jul 24, 03:10 UTCJul 24, 04:40 UTC1h 30m
2026-07-23 ENY3939 ORD → MSN Jul 23, 23:00 UTCJul 24, 01:40 UTC2h 40m
2026-07-23 ENY3939 ORD → MSN Jul 23, 19:05 UTCJul 23, 21:45 UTC2h 40m
2026-07-23 ENY3338 MSY → DFW Jul 23, 17:10 UTCJul 23, 17:40 UTC30m
2026-07-23 ENY3338 MSY → DFW Jul 23, 15:20 UTCJul 23, 15:35 UTC15m
2026-07-23 ENY3367 FAY → DFW Jul 23, 11:00 UTCJul 23, 13:30 UTC2h 30m
2026-07-23 ENY3380 DCA → MSY Jul 23, 01:55 UTCJul 23, 04:35 UTC2h 40m
2026-07-23 ENY3380 DCA → MSY Jul 23, 01:53 UTCJul 23, 04:35 UTC2h 42m
2026-07-22 ENY3605 BNA → TPA Jul 22, 23:55 UTCJul 23, 00:50 UTC55m
2026-07-22 ENY3605 BNA → TPA Jul 22, 21:50 UTCJul 22, 22:45 UTC55m
2026-07-22 ENY3861 HRL → DFW Jul 22, 19:21 UTCJul 22, 20:51 UTC1h 30m
2026-07-22 ENY3861 HRL → DFW Jul 22, 16:55 UTCJul 22, 20:50 UTC3h 55m
2026-07-22 ENY3755 MTY → MIA Jul 22, 12:35 UTCJul 22, 15:40 UTC3h 5m
2026-07-21 ENY3756 MIA → MTY Jul 21, 23:30 UTCJul 22, 02:40 UTC3h 10m
2026-07-21 ENY3465 ORD → CVG Jul 21, 16:15 UTCJul 21, 21:40 UTC5h 25m
2026-07-21 ENY4304 DFW → TXK Jul 21, 14:20 UTCJul 21, 14:40 UTC20m
2026-07-21 ENY3423 - Jul 21, 11:35 UTCJul 21, 13:05 UTC1h 30m
2026-07-21 ENY3427 ORD → YYZ Jul 21, 03:25 UTCJul 21, 04:55 UTC1h 30m
2026-07-21 ENY4082 LAN → ORD Jul 21, 00:40 UTCJul 21, 02:20 UTC1h 40m
2026-07-20 ENY3931 CHS → ORD Jul 20, 22:10 UTCJul 20, 23:45 UTC1h 35m
2026-07-20 ENY3927 PWM → ORD Jul 20, 19:05 UTCJul 20, 19:25 UTC20m
2026-07-20 ENY3927 PWM → ORD Jul 20, 18:33 UTCJul 20, 19:25 UTC52m
2026-07-20 ENY3927 PWM → ORD Jul 20, 16:55 UTCJul 20, 17:10 UTC15m
2026-07-20 ENY3978 GSP → ORD Jul 20, 15:00 UTCJul 20, 15:25 UTC25m
2026-07-20 ENY3978 GSP → ORD Jul 20, 14:39 UTCJul 20, 15:25 UTC46m
2026-07-20 ENY3978 GSP → ORD Jul 20, 13:10 UTCJul 20, 13:30 UTC20m
2026-07-20 ENY3806 GSP → MIA Jul 20, 10:45 UTCJul 20, 12:15 UTC1h 30m
2026-07-20 ENY3435 ORD → RST Jul 20, 03:15 UTCJul 20, 04:40 UTC1h 25m
2026-07-20 ENY3435 ORD → RST Jul 20, 03:13 UTCJul 20, 04:32 UTC1h 19m
2026-07-19 ENY4085 - Jul 19, 22:30 UTCJul 20, 00:45 UTC2h 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 N292NN page for operator, model, and routing details .

Mode-S A2FE21 frequently asked

What is Mode-S code A2FE21?
A2FE21 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N292NN.
Where is Mode-S A2FE21 registered?
Mode-S code A2FE21 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 A2FE21 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2FE21, octal 50577041, decimal 10,681,889.
What flights does A2FE21 operate?
Mode-S A2FE21 has broadcast 20 distinct callsigns, including ENY3430, ENY4203, ENY3576, ENY3540, ENY4177.