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
Broadcasting now · callsign ENY3776 · 34,000 ft
Flights observed
738
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:25 UTC

Current position

A1AC11 is currently broadcasting. Map zoomed to live position.

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
ENY4171 Envoy Air 9 2026-07-24
ENY4095 Envoy Air 8 2026-05-25
ENY3729 - 8 2026-07-03
ENY3630 - 7 2026-07-11
ENY3545 - 7 2026-06-28
ENY3509 Envoy Air 7 2026-04-30
ENY3448 - 7 2026-07-14
ENY4179 Envoy Air 6 2026-05-17
ENY4039 Envoy Air 6 2026-07-22
ENY3908 - 6 2026-07-15
ENY3891 - 6 2026-07-15
ENY3468 Envoy Air 6 2026-06-07
ENY3462 - 6 2026-07-08
ENY3445 - 6 2026-06-30
ENY4172 Envoy Air 5 2026-04-23
ENY4162 - 5 2026-06-22
ENY4161 Envoy Air 5 2026-05-14
ENY3862 - 5 2026-07-20
ENY3689 Envoy Air 5 2026-06-11
ENY3580 Envoy Air 5 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3950 ORD → CVG Jul 26, 20:35 UTCJul 26, 21:25 UTC50m
2026-07-26 ENY4135 STL → ORD Jul 26, 17:25 UTCJul 26, 18:55 UTC1h 30m
2026-07-26 ENY4135 STL → ORD Jul 26, 15:00 UTCJul 26, 16:20 UTC1h 20m
2026-07-26 ENY3854 ORD → MSN Jul 26, 01:00 UTCJul 26, 02:10 UTC1h 10m
2026-07-25 ENY3854 ORD → MSN Jul 25, 23:00 UTCJul 25, 23:55 UTC55m
2026-07-25 ENY3711 BOS → ORD Jul 25, 17:35 UTCJul 25, 19:40 UTC2h 5m
2026-07-25 ENY3711 BOS → ORD Jul 25, 17:33 UTCJul 25, 19:39 UTC2h 6m
2026-07-25 ENY3354 DTW → ORD Jul 25, 15:00 UTCJul 25, 16:50 UTC1h 50m
2026-07-25 ENY3354 DTW → ORD Jul 25, 14:53 UTCJul 25, 16:44 UTC1h 51m
2026-07-24 ENY3341 TVC → ORD Jul 24, 22:45 UTCJul 25, 00:20 UTC1h 35m
2026-07-24 ENY3341 TVC → ORD Jul 24, 22:40 UTCJul 25, 00:29 UTC1h 49m
2026-07-24 ENY4068 CHS → ORD Jul 24, 20:25 UTCJul 24, 21:25 UTC1h 0m
2026-07-24 ENY4068 CHS → ORD Jul 24, 20:24 UTCJul 24, 21:22 UTC58m
2026-07-24 ENY4068 CHS → ORD Jul 24, 18:05 UTCJul 24, 19:10 UTC1h 5m
2026-07-24 ENY4171 ORD → CVG Jul 24, 16:05 UTCJul 24, 17:00 UTC55m
2026-07-24 ENY4171 ORD → CVG Jul 24, 16:04 UTCJul 24, 17:00 UTC56m
2026-07-24 ENY4171 ORD → CVG Jul 24, 14:05 UTCJul 24, 15:00 UTC55m
2026-07-24 ENY3807 CID → ORD Jul 24, 11:30 UTCJul 24, 13:10 UTC1h 40m
2026-07-24 ENY3807 CID → ORD Jul 24, 11:26 UTCJul 24, 13:05 UTC1h 39m
2026-07-24 ENY4115 DFW → CVG Jul 24, 00:10 UTCJul 24, 02:20 UTC2h 10m
2026-07-24 ENY4115 DFW → CVG Jul 24, 00:07 UTCJul 24, 02:18 UTC2h 11m
2026-07-23 ENY4304 DFW → TXK Jul 23, 14:50 UTCJul 23, 21:45 UTC6h 55m
2026-07-23 ENY4139 MIA → RDU Jul 23, 10:25 UTCJul 23, 11:00 UTC35m
2026-07-23 ENY4071 IND → MIA Jul 23, 03:15 UTCJul 23, 03:50 UTC35m
2026-07-23 ENY4071 IND → MIA Jul 23, 03:12 UTCJul 23, 03:49 UTC37m
2026-07-22 ENY4057 MEM → DCA Jul 22, 23:15 UTCJul 23, 01:35 UTC2h 20m
2026-07-22 ENY4057 MEM → DCA Jul 22, 19:45 UTCJul 22, 22:05 UTC2h 20m
2026-07-22 ENY3337 CLT → BGR Jul 22, 17:55 UTCJul 22, 18:25 UTC30m
2026-07-22 ENY3337 CLT → BGR Jul 22, 16:30 UTCJul 22, 16:40 UTC10m
2026-07-22 ENY4039 DFW → ABI Jul 22, 14:30 UTCJul 22, 14:55 UTC25m
2026-07-22 ENY4039 DFW → ABI Jul 22, 14:11 UTCJul 22, 14:52 UTC41m
2026-07-22 ENY4039 DFW → ABI Jul 22, 12:35 UTCJul 22, 12:55 UTC20m
2026-07-22 ENY3682 OMA → ORD Jul 22, 11:10 UTCJul 22, 11:25 UTC15m
2026-07-22 ENY3920 ORD → OKC Jul 22, 02:30 UTCJul 22, 03:35 UTC1h 5m
2026-07-21 ENY3555 CVG → BOS Jul 21, 23:35 UTCJul 22, 00:15 UTC40m
2026-07-21 ENY3555 CVG → BOS Jul 21, 22:05 UTCJul 21, 22:45 UTC40m
2026-07-21 ENY3638 CVG → MIA Jul 21, 10:45 UTCJul 21, 12:55 UTC2h 10m
2026-07-21 ENY3690 ORD → CVG Jul 21, 00:45 UTCJul 21, 01:30 UTC45m
2026-07-20 ENY3862 - Jul 20, 18:10 UTCJul 20, 20:05 UTC1h 55m
2026-07-20 ENY3862 - Jul 20, 15:15 UTCJul 20, 16:55 UTC1h 40m
2026-07-20 ENY3572 - Jul 20, 12:40 UTCJul 20, 13:30 UTC50m
2026-07-20 ENY3550 CVG → ORD Jul 20, 02:00 UTCJul 20, 04:10 UTC2h 10m
2026-07-19 ENY3420 DFW → MAF Jul 19, 21:15 UTCJul 19, 23:35 UTC2h 20m
2026-07-19 ENY4317 PHX → GRB Jul 19, 17:25 UTCJul 19, 19:45 UTC2h 20m
2026-07-19 ENY3978 - Jul 19, 14:55 UTCJul 19, 15:15 UTC20m
2026-07-19 ENY3978 ELH → MIA Jul 19, 14:31 UTCJul 19, 15:15 UTC44m
2026-07-19 ENY3978 - Jul 19, 12:55 UTCJul 19, 13:10 UTC15m
2026-07-19 ENY3662 MSN → AUS Jul 19, 09:20 UTCJul 19, 11:30 UTC2h 10m
2026-07-19 ENY3550 - Jul 19, 02:00 UTCJul 19, 04:10 UTC2h 10m
2026-07-19 ENY3555 CVG → BOS Jul 19, 00:05 UTCJul 19, 00:45 UTC40m

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?
Yes. Mode-S A1AC11 is currently airborne.
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 ENY4171, ENY4095, ENY3729, ENY3630, ENY3545.