Apparatus

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sensors Mode-S transponder

A1AC11

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N207AN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A1AC11
Octal
50326021
Decimal
10,595,345
Country
US
Tail
N207AN
Type
E75L
No current signal · last broadcast 1h ago
Flights observed
327
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A1AC11.

Country allocation

The ICAO 24-bit address A1AC11 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
ENY4095 Envoy Air 8 2026-05-25
ENY3509 Envoy Air 7 2026-04-30
ENY4179 Envoy Air 6 2026-05-17
ENY4171 Envoy Air 6 2026-05-18
ENY4172 Envoy Air 5 2026-04-23
ENY4161 Envoy Air 5 2026-05-14
ENY3562 Envoy Air 5 2026-05-22
ENY3445 Envoy Air 5 2026-05-12
ENY4190 Envoy Air 4 2026-05-17
ENY3817 Envoy Air 4 2026-05-29
ENY3755 Envoy Air 4 2026-05-05
ENY3521 Envoy Air 4 2026-05-12
ENY4157 - 3 2026-04-13
ENY4151 Envoy Air 3 2026-05-12
ENY4134 Envoy Air 3 2026-05-29
ENY4114 Envoy Air 3 2026-05-13
ENY4112 Envoy Air 3 2026-04-29
ENY4099 Envoy Air 3 2026-04-20
ENY4060 Envoy Air 3 2026-05-21
ENY3937 Envoy Air 3 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 ENY4150 MHT → ORD May 30, 11:10 UTCMay 30, 12:15 UTC1h 5m
2026-05-30 ENY4149 ORD → MHT May 30, 01:30 UTCMay 30, 03:10 UTC1h 40m
2026-05-29 ENY3409 DFW → CRP May 29, 21:30 UTCMay 30, 00:10 UTC2h 40m
2026-05-29 ENY3409 DFW → CRP May 29, 18:45 UTCMay 29, 20:20 UTC1h 35m
2026-05-29 ENY3981 DCA → PNS May 29, 15:55 UTCMay 29, 17:30 UTC1h 35m
2026-05-29 ENY3981 DCA → PNS May 29, 13:30 UTCMay 29, 14:40 UTC1h 10m
2026-05-29 ENY4134 SYR → ORD May 29, 10:10 UTCMay 29, 11:50 UTC1h 40m
2026-05-29 ENY3817 ORD → MSP May 29, 02:15 UTCMay 29, 03:30 UTC1h 15m
2026-05-29 ENY3817 ORD → MSP May 29, 02:14 UTCMay 29, 03:37 UTC1h 23m
2026-05-28 ENY3406 PIA → DFW May 28, 23:15 UTCMay 29, 00:50 UTC1h 35m
2026-05-28 ENY3406 PIA → DFW May 28, 21:05 UTCMay 28, 22:15 UTC1h 10m
2026-05-28 ENY3733 ORD → ABE May 28, 17:50 UTCMay 28, 19:50 UTC2h 0m
2026-05-28 ENY3733 ORD → ABE May 28, 15:00 UTCMay 28, 16:20 UTC1h 20m
2026-05-28 ENY4134 SYR → ORD May 28, 11:10 UTCMay 28, 12:50 UTC1h 40m
2026-05-28 ENY4134 SYR → ORD May 28, 11:07 UTCMay 28, 12:49 UTC1h 42m
2026-05-28 ENY3817 ORD → MSP May 28, 02:10 UTCMay 28, 03:20 UTC1h 10m
2026-05-28 ENY3817 ORD → MSP May 28, 02:07 UTCMay 28, 03:25 UTC1h 18m
2026-05-27 ENY3479 PVD → ORD May 27, 23:45 UTCMay 28, 00:35 UTC50m
2026-05-27 ENY3479 PVD → ORD May 27, 21:35 UTCMay 27, 22:25 UTC50m
2026-05-27 ENY3862 ONT → PHX May 27, 18:10 UTCMay 27, 20:10 UTC2h 0m
2026-05-27 ENY3862 ONT → PHX May 27, 18:05 UTCMay 27, 19:58 UTC1h 53m
2026-05-27 ENY3862 ONT → PHX May 27, 15:25 UTCMay 27, 17:10 UTC1h 45m
2026-05-27 ENY3894 CVG → ORD May 27, 12:45 UTCMay 27, 14:00 UTC1h 15m
2026-05-27 ENY3690 ORD → CVG May 27, 02:27 UTCMay 27, 03:13 UTC46m
2026-05-27 ENY3545 MIA → MSY May 27, 00:34 UTCMay 27, 01:19 UTC45m
2026-05-26 ENY3545 MIA → MSY May 26, 22:29 UTCMay 26, 22:59 UTC30m
2026-05-26 ENY3908 BNA → ORD May 26, 19:30 UTCMay 26, 21:04 UTC1h 35m
2026-05-26 ENY3908 BNA → ORD May 26, 19:19 UTCMay 26, 21:08 UTC1h 49m
2026-05-26 ENY3891 CHS → ORD May 26, 16:50 UTCMay 26, 17:50 UTC1h 0m
2026-05-26 ENY3891 CHS → ORD May 26, 16:47 UTCMay 26, 18:36 UTC1h 49m
2026-05-26 ENY3746 DFW → DAY May 26, 12:05 UTCMay 26, 14:30 UTC2h 25m
2026-05-26 ENY3746 DFW → DAY May 26, 12:04 UTCMay 26, 14:25 UTC2h 21m
2026-05-26 ENY3937 AVP → ORD May 26, 05:20 UTCMay 26, 07:34 UTC2h 15m
2026-05-26 ENY3937 AVP → ORD May 26, 05:17 UTCMay 26, 07:43 UTC2h 26m
2026-05-26 ENY3837 DAY → DFW May 26, 03:00 UTCMay 26, 03:45 UTC45m
2026-05-26 ENY3837 DAY → DFW May 26, 02:56 UTCMay 26, 03:43 UTC47m
2026-05-25 ENY3493 CMH → DFW May 25, 23:45 UTCMay 26, 00:29 UTC45m
2026-05-25 ENY4095 BIL → DFW May 25, 19:10 UTCMay 25, 19:50 UTC40m
2026-05-25 ENY4095 BIL → DFW May 25, 17:35 UTCMay 25, 18:10 UTC35m
2026-05-25 ENY3708 BOS → STL May 25, 15:30 UTCMay 25, 16:15 UTC45m
2026-05-25 ENY3708 BOS → STL May 25, 15:21 UTCMay 25, 16:13 UTC52m
2026-05-25 ENY3708 BOS → STL May 25, 13:40 UTCMay 25, 14:20 UTC40m
2026-05-25 ENY3647 ABI → DFW May 25, 12:15 UTCMay 25, 12:50 UTC35m
2026-05-25 ENY3705 MHK → ORD May 25, 03:55 UTCMay 25, 04:24 UTC29m
2026-05-25 ENY3705 MHK → ORD May 25, 03:55 UTCMay 25, 04:20 UTC25m
2026-05-25 ENY3621 MIA → MSY May 25, 01:55 UTCMay 25, 02:40 UTC45m
2026-05-24 ENY3621 MIA → MSY May 24, 19:05 UTCMay 24, 20:45 UTC1h 40m
2026-05-24 ENY3591 ORD → RDU May 24, 16:35 UTCMay 24, 17:15 UTC40m
2026-05-24 ENY3591 ORD → RDU May 24, 14:55 UTCMay 24, 15:40 UTC45m
2026-05-24 ENY3985 DCA → GRR May 24, 12:55 UTCMay 24, 13:45 UTC50m

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 N207AN page for operator, model, and routing details .

Mode-S A1AC11 frequently asked

What is Mode-S code A1AC11?
A1AC11 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N207AN.
Where is Mode-S A1AC11 registered?
Mode-S code A1AC11 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 A1AC11 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1AC11, octal 50326021, decimal 10,595,345.
What flights does A1AC11 operate?
Mode-S A1AC11 has broadcast 20 distinct callsigns, including ENY4095, ENY3509, ENY4179, ENY4171, ENY4172.