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sensors Mode-S transponder

A1A5CF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N205NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A1A5CF
Octal
50322717
Decimal
10,593,743
Country
US
Tail
N205NN
Type
E75L
Broadcasting now · callsign ENY3390 · 30,000 ft
Flights observed
734
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:45 UTC

Current position

A1A5CF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1A5CF 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
ENY4130 - 12 2026-07-19
ENY3458 - 10 2026-07-05
ENY4190 - 9 2026-07-21
ENY4152 - 8 2026-07-17
ENY4150 - 8 2026-06-18
ENY3980 Envoy Air 8 2026-06-03
ENY3397 Envoy Air 8 2026-07-23
ENY4202 - 7 2026-07-15
ENY4273 Envoy Air 6 2026-05-04
ENY4186 Envoy Air 6 2026-05-02
ENY3981 Envoy Air 6 2026-06-04
ENY3466 Envoy Air 6 2026-07-06
ENY3430 - 6 2026-07-04
ENY3409 Envoy Air 6 2026-06-04
ENY4176 - 5 2026-06-24
ENY4012 Envoy Air 5 2026-04-26
ENY3961 - 5 2026-06-26
ENY3862 Envoy Air 5 2026-07-01
ENY3814 - 5 2026-06-16
ENY3653 Envoy Air 5 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3434 DFW → MTY Jul 26, 19:00 UTCJul 26, 20:45 UTC1h 45m
2026-07-26 ENY3838 DCA → TLH Jul 26, 16:10 UTCJul 26, 16:55 UTC45m
2026-07-26 ENY3838 DCA → TLH Jul 26, 16:05 UTCJul 26, 16:53 UTC48m
2026-07-26 ENY3838 DCA → TLH Jul 26, 14:15 UTCJul 26, 15:00 UTC45m
2026-07-26 ENY3448 BTV → DCA Jul 26, 11:30 UTCJul 26, 12:55 UTC1h 25m
2026-07-25 ENY3659 MIA → STL Jul 25, 23:55 UTCJul 26, 01:15 UTC1h 20m
2026-07-25 ENY3777 MCI → DFW Jul 25, 21:40 UTCJul 25, 22:30 UTC50m
2026-07-25 ENY3777 MCI → DFW Jul 25, 20:00 UTCJul 25, 20:40 UTC40m
2026-07-25 ENY3778 BOS → CMH Jul 25, 18:10 UTCJul 25, 19:00 UTC50m
2026-07-25 ENY3778 BOS → CMH Jul 25, 16:45 UTCJul 25, 17:25 UTC40m
2026-07-25 ENY3915 CVG → DFW Jul 25, 13:55 UTCJul 25, 15:20 UTC1h 25m
2026-07-25 ENY3459 ORD → FAR Jul 25, 01:15 UTCJul 25, 02:30 UTC1h 15m
2026-07-24 ENY3575 MSN → ORD Jul 24, 22:15 UTCJul 24, 23:25 UTC1h 10m
2026-07-24 ENY3575 MSN → ORD Jul 24, 20:05 UTCJul 24, 21:05 UTC1h 0m
2026-07-24 ENY3399 SDF → DFW Jul 24, 16:35 UTCJul 24, 18:30 UTC1h 55m
2026-07-24 ENY3399 SDF → DFW Jul 24, 13:40 UTCJul 24, 15:25 UTC1h 45m
2026-07-24 ENY3394 MIA → AUS Jul 24, 10:10 UTCJul 24, 11:35 UTC1h 25m
2026-07-24 ENY4278 DFW → HSV Jul 24, 02:50 UTCJul 24, 04:10 UTC1h 20m
2026-07-24 ENY3878 ORD → EWR Jul 24, 00:20 UTCJul 24, 01:15 UTC55m
2026-07-23 ENY3781 CHA → DFW Jul 23, 22:45 UTCJul 23, 23:25 UTC40m
2026-07-23 ENY3482 DFW → CLL Jul 23, 20:00 UTCJul 23, 21:05 UTC1h 5m
2026-07-23 ENY3482 DFW → CLL Jul 23, 18:10 UTCJul 23, 19:05 UTC55m
2026-07-23 ENY3397 FAR → DFW Jul 23, 15:20 UTCJul 23, 16:50 UTC1h 30m
2026-07-23 ENY3397 FAR → DFW Jul 23, 12:40 UTCJul 23, 14:10 UTC1h 30m
2026-07-23 ENY3988 MSN → DCA Jul 23, 10:05 UTCJul 23, 10:45 UTC40m
2026-07-23 ENY4281 ORD → TUL Jul 23, 05:00 UTCJul 23, 06:25 UTC1h 25m
2026-07-23 ENY4281 ORD → TUL Jul 23, 04:57 UTCJul 23, 06:20 UTC1h 23m
2026-07-22 ENY3453 - Jul 22, 17:50 UTCJul 22, 20:10 UTC2h 20m
2026-07-22 ENY3453 - Jul 22, 14:45 UTCJul 22, 16:30 UTC1h 45m
2026-07-22 ENY3460 - Jul 22, 11:10 UTCJul 22, 13:00 UTC1h 50m
2026-07-22 ENY3463 HUX → DFW Jul 22, 02:28 UTCJul 22, 03:59 UTC1h 31m
2026-07-22 ENY3463 HUX → DFW Jul 22, 02:30 UTCJul 22, 04:00 UTC1h 30m
2026-07-21 ENY3717 ORD → PIT Jul 21, 23:55 UTCJul 22, 00:30 UTC35m
2026-07-21 ENY3717 ORD → PIT Jul 21, 22:40 UTCJul 21, 23:05 UTC25m
2026-07-21 ENY3716 BOS → CMH Jul 21, 20:05 UTCJul 21, 20:45 UTC40m
2026-07-21 ENY3716 BOS → CMH Jul 21, 18:30 UTCJul 21, 18:55 UTC25m
2026-07-21 ENY4190 - Jul 21, 16:45 UTCJul 21, 17:30 UTC45m
2026-07-21 ENY4190 - Jul 21, 15:05 UTCJul 21, 15:40 UTC35m
2026-07-21 ENY3656 - Jul 21, 11:45 UTCJul 21, 13:10 UTC1h 25m
2026-07-21 ENY3656 LIT → ORD Jul 21, 11:37 UTCJul 21, 13:06 UTC1h 29m
2026-07-21 ENY3881 IND → ORD Jul 21, 00:50 UTCJul 21, 01:30 UTC40m
2026-07-21 ENY3881 IND → ORD Jul 21, 00:49 UTCJul 21, 01:38 UTC49m
2026-07-20 ENY3653 LAN → ORD Jul 20, 22:40 UTCJul 20, 23:30 UTC50m
2026-07-20 ENY3653 LAN → ORD Jul 20, 22:36 UTCJul 20, 23:31 UTC55m
2026-07-20 ENY3653 LAN → ORD Jul 20, 20:45 UTCJul 20, 21:30 UTC45m
2026-07-20 ENY3577 - Jul 20, 17:25 UTCJul 20, 18:50 UTC1h 25m
2026-07-20 ENY3577 HSV → DFW Jul 20, 17:24 UTCJul 20, 18:58 UTC1h 34m
2026-07-20 ENY3577 DFW → HSV Jul 20, 14:45 UTCJul 20, 16:10 UTC1h 25m
2026-07-19 ENY4130 SHV → DFW Jul 19, 20:20 UTCJul 19, 21:05 UTC45m
2026-07-19 ENY4130 SHV → DFW Jul 19, 20:20 UTCJul 19, 21:04 UTC44m

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 N205NN page for operator, model, and routing details .

Mode-S A1A5CF frequently asked

What is Mode-S code A1A5CF?
A1A5CF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N205NN.
Where is Mode-S A1A5CF registered?
Mode-S code A1A5CF 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 A1A5CF broadcasting right now?
Yes. Mode-S A1A5CF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1A5CF, octal 50322717, decimal 10,593,743.
What flights does A1A5CF operate?
Mode-S A1A5CF has broadcast 20 distinct callsigns, including ENY4130, ENY3458, ENY4190, ENY4152, ENY4150.