Apparatus

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sensors Mode-S transponder

A1E9AC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N222NS · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A1E9AC
Octal
50364654
Decimal
10,611,116
Country
US
Tail
N222NS
Type
E75L
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
772
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S A1E9AC.

Country allocation

The ICAO 24-bit address A1E9AC 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
ENY3535 - 15 2026-07-18
ENY4178 - 12 2026-07-01
ENY4146 - 12 2026-07-03
ENY3422 - 9 2026-07-03
ENY4224 Envoy Air 8 2026-05-05
ENY4083 - 8 2026-07-01
ENY3692 - 8 2026-06-28
ENY3691 - 8 2026-06-21
ENY3441 - 8 2026-06-20
ENY4006 Envoy Air 7 2026-07-03
ENY3990 - 7 2026-07-03
ENY3978 - 7 2026-07-07
ENY3844 - 7 2026-06-27
ENY3821 - 7 2026-07-13
ENY3563 Envoy Air 7 2026-06-27
ENY3560 Envoy Air 7 2026-06-11
ENY4039 - 6 2026-07-15
ENY4031 Envoy Air 6 2026-05-01
ENY4017 - 6 2026-07-01
ENY3609 - 6 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3772 CVG → ORD Jul 26, 21:00 UTCJul 26, 21:40 UTC40m
2026-07-26 ENY3772 CVG → ORD Jul 26, 19:25 UTCJul 26, 20:00 UTC35m
2026-07-26 ENY3948 SBP → PHX Jul 26, 12:35 UTCJul 26, 14:00 UTC1h 25m
2026-07-26 ENY4101 CMH → DFW Jul 26, 00:55 UTCJul 26, 01:45 UTC50m
2026-07-26 ENY4101 CMH → DFW Jul 26, 00:54 UTCJul 26, 01:45 UTC51m
2026-07-25 ENY3434 DFW → MTY Jul 25, 21:35 UTCJul 25, 23:05 UTC1h 30m
2026-07-25 ENY3434 DFW → MTY Jul 25, 19:00 UTCJul 25, 20:45 UTC1h 45m
2026-07-25 ENY3788 CWA → ORD Jul 25, 15:25 UTCJul 25, 17:10 UTC1h 45m
2026-07-25 ENY3788 CWA → ORD Jul 25, 15:20 UTCJul 25, 17:05 UTC1h 45m
2026-07-25 ENY3788 CWA → ORD Jul 25, 12:50 UTCJul 25, 14:35 UTC1h 45m
2026-07-25 ENY3411 GCK → DFW Jul 25, 10:25 UTCJul 25, 11:15 UTC50m
2026-07-25 ENY3357 ELP → AUS Jul 25, 03:15 UTCJul 25, 04:05 UTC50m
2026-07-24 ENY3461 AUS → TUL Jul 24, 23:55 UTCJul 25, 01:35 UTC1h 40m
2026-07-24 ENY3461 AUS → TUL Jul 24, 21:35 UTCJul 24, 23:05 UTC1h 30m
2026-07-24 ENY3776 BOS → ORD Jul 24, 15:00 UTCJul 24, 19:05 UTC4h 5m
2026-07-24 ENY3985 DCA → GRR Jul 24, 12:35 UTCJul 24, 13:20 UTC45m
2026-07-24 ENY4105 ORD → XNA Jul 24, 00:25 UTCJul 24, 01:35 UTC1h 10m
2026-07-23 ENY3819 MSY → AUS Jul 23, 21:05 UTCJul 23, 22:30 UTC1h 25m
2026-07-23 ENY3819 MSY → AUS Jul 23, 20:59 UTCJul 23, 22:28 UTC1h 29m
2026-07-23 ENY3819 MSY → AUS Jul 23, 18:40 UTCJul 23, 19:55 UTC1h 15m
2026-07-23 ENY3488 ORD → AUS Jul 23, 16:25 UTCJul 23, 17:00 UTC35m
2026-07-23 ENY3488 ORD → AUS Jul 23, 16:20 UTCJul 23, 17:12 UTC52m
2026-07-23 ENY4121 BUF → ORD Jul 23, 13:00 UTCJul 23, 15:10 UTC2h 10m
2026-07-23 ENY4121 BUF → ORD Jul 23, 12:59 UTCJul 23, 15:06 UTC2h 7m
2026-07-23 ENY3888 DCA → MSP Jul 23, 10:20 UTCJul 23, 11:40 UTC1h 20m
2026-07-23 ENY3888 DCA → MSP Jul 23, 10:14 UTCJul 23, 11:38 UTC1h 24m
2026-07-23 ENY3897 MIA → GSP Jul 23, 02:15 UTCJul 23, 03:35 UTC1h 20m
2026-07-22 ENY3487 CVG → MIA Jul 22, 22:30 UTCJul 23, 00:45 UTC2h 15m
2026-07-22 ENY3950 ORD → CVG Jul 22, 20:40 UTCJul 22, 21:25 UTC45m
2026-07-22 ENY3950 ORD → CVG Jul 22, 20:39 UTCJul 22, 21:24 UTC45m
2026-07-22 ENY3415 ORD → SDF Jul 22, 18:10 UTCJul 22, 18:50 UTC40m
2026-07-22 ENY3415 ORD → SDF Jul 22, 18:06 UTCJul 22, 18:47 UTC41m
2026-07-22 ENY3415 ORD → SDF Jul 22, 16:35 UTCJul 22, 17:10 UTC35m
2026-07-22 ENY3722 MLI → ORD Jul 22, 12:50 UTCJul 22, 14:55 UTC2h 5m
2026-07-22 ENY3722 MLI → ORD Jul 22, 12:47 UTCJul 22, 14:47 UTC2h 0m
2026-07-22 ENY3896 OKC → DFW Jul 22, 03:20 UTCJul 22, 05:20 UTC2h 0m
2026-07-21 ENY3602 ORD → AUS Jul 21, 23:30 UTCJul 22, 01:30 UTC2h 0m
2026-07-21 ENY3602 ORD → AUS Jul 21, 20:10 UTCJul 21, 22:00 UTC1h 50m
2026-07-21 ENY4134 - Jul 21, 17:10 UTCJul 21, 18:50 UTC1h 40m
2026-07-21 ENY3975 - Jul 21, 15:20 UTCJul 21, 16:05 UTC45m
2026-07-21 ENY4047 BOS → DCA Jul 21, 05:05 UTCJul 21, 06:20 UTC1h 15m
2026-07-21 ENY4051 DCA → BOS Jul 21, 03:05 UTCJul 21, 04:15 UTC1h 10m
2026-07-21 ENY4051 DCA → BOS Jul 21, 03:01 UTCJul 21, 04:16 UTC1h 15m
2026-07-20 ENY3581 - Jul 20, 23:35 UTCJul 21, 01:05 UTC1h 29m
2026-07-20 ENY3581 - Jul 20, 21:10 UTCJul 20, 22:35 UTC1h 25m
2026-07-20 ENY4138 - Jul 20, 18:35 UTCJul 20, 19:55 UTC1h 20m
2026-07-20 ENY4138 - Jul 20, 16:10 UTCJul 20, 17:30 UTC1h 20m
2026-07-20 ENY3824 - Jul 20, 12:10 UTCJul 20, 14:30 UTC2h 20m
2026-07-20 ENY3824 XNA → DCA Jul 20, 12:10 UTCJul 20, 14:25 UTC2h 15m
2026-07-20 ENY4101 - Jul 20, 01:15 UTCJul 20, 02:05 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 N222NS page for operator, model, and routing details .

Mode-S A1E9AC frequently asked

What is Mode-S code A1E9AC?
A1E9AC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N222NS.
Where is Mode-S A1E9AC registered?
Mode-S code A1E9AC 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 A1E9AC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1E9AC, octal 50364654, decimal 10,611,116.
What flights does A1E9AC operate?
Mode-S A1E9AC has broadcast 20 distinct callsigns, including ENY3535, ENY4178, ENY4146, ENY3422, ENY4224.