Apparatus

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sensors Mode-S transponder

A1E874

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N222AE · operated by HELICE SARCELLE LLC

Hex
A1E874
Octal
50364164
Decimal
10,610,804
Country
US
Tail
N222AE
Type
SR20
No current signal · last broadcast Jul 12, 18:10 UTC
Flights observed
35
Distinct callsigns
1
Country
US
Last broadcast
Jul 12, 18:10 UTC

Last known position

Most recent position reported by Mode-S A1E874.

Country allocation

The ICAO 24-bit address A1E874 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 1 distinct

Callsign Airline Flights Last seen
N222AE - 35 2026-07-12

Recent flights last 35

DateFlightRouteTakeoffLandingDuration
2026-07-12 N222AE - Jul 12, 17:55 UTCJul 12, 18:10 UTC15m
2026-07-12 N222AE - Jul 12, 16:30 UTCJul 12, 16:50 UTC20m
2026-07-08 N222AE - Jul 8, 16:10 UTCJul 8, 17:10 UTC1h 0m
2026-07-07 N222AE - Jul 7, 19:05 UTCJul 7, 20:20 UTC1h 15m
2026-07-06 N222AE - Jul 6, 19:40 UTCJul 6, 21:00 UTC1h 20m
2026-07-01 N222AE - Jul 1, 03:10 UTCJul 1, 05:10 UTC2h 0m
2026-06-30 N222AE - Jun 30, 17:20 UTCJun 30, 17:30 UTC10m
2026-06-30 N222AE - Jun 30, 15:40 UTCJun 30, 16:40 UTC1h 0m
2026-06-27 N222AE - Jun 27, 20:24 UTCJun 27, 22:04 UTC1h 40m
2026-06-27 N222AE - Jun 27, 12:45 UTCJun 27, 13:55 UTC1h 10m
2026-06-26 N222AE - Jun 26, 17:00 UTCJun 26, 17:25 UTC25m
2026-06-24 N222AE - Jun 24, 16:50 UTCJun 24, 16:59 UTC10m
2026-06-24 N222AE - Jun 24, 15:14 UTCJun 24, 15:59 UTC45m
2026-06-21 N222AE - Jun 21, 22:24 UTCJun 21, 23:50 UTC1h 25m
2026-06-17 N222AE - Jun 17, 21:45 UTCJun 17, 21:50 UTC5m
2026-06-17 N222AE - Jun 17, 21:30 UTCJun 17, 21:40 UTC10m
2026-06-17 N222AE - Jun 17, 21:15 UTCJun 17, 21:20 UTC5m
2026-06-17 N222AE - Jun 17, 20:05 UTCJun 17, 21:10 UTC1h 5m
2026-06-16 N222AE - Jun 16, 23:50 UTCJun 17, 00:00 UTC10m
2026-06-16 N222AE - Jun 16, 22:50 UTCJun 16, 23:10 UTC20m
2026-06-14 N222AE - Jun 14, 01:35 UTCJun 14, 01:45 UTC10m
2026-06-14 N222AE - Jun 14, 00:10 UTCJun 14, 00:20 UTC10m
2026-06-13 N222AE - Jun 13, 17:40 UTCJun 13, 18:00 UTC20m
2026-06-13 N222AE - Jun 13, 16:40 UTCJun 13, 17:00 UTC20m
2026-06-11 N222AE - Jun 11, 21:50 UTCJun 11, 23:20 UTC1h 30m
2026-06-09 N222AE - Jun 9, 20:05 UTCJun 9, 20:35 UTC30m
2026-06-09 N222AE - Jun 9, 18:50 UTCJun 9, 19:05 UTC15m
2026-06-06 N222AE - Jun 6, 20:05 UTCJun 6, 20:19 UTC15m
2026-06-06 N222AE - Jun 6, 18:50 UTCJun 6, 19:24 UTC35m
2026-05-30 N222AE - May 30, 20:00 UTCMay 30, 21:45 UTC1h 45m
2026-05-16 N222AE - May 16, 17:30 UTCMay 16, 17:50 UTC20m
2026-04-29 N222AE - Apr 29, 15:35 UTCApr 29, 16:00 UTC25m
2026-04-23 N222AE - Apr 23, 00:40 UTCApr 23, 01:35 UTC55m
2026-04-16 N222AE - Apr 16, 20:45 UTCApr 16, 20:55 UTC10m
2026-04-16 N222AE - Apr 16, 19:30 UTCApr 16, 19:40 UTC10m

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 N222AE page for operator, model, and routing details .

Mode-S A1E874 frequently asked

What is Mode-S code A1E874?
A1E874 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N222AE.
Where is Mode-S A1E874 registered?
Mode-S code A1E874 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 A1E874 broadcasting right now?
No active broadcast right now. Last signal was Jul 12, 18:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1E874, octal 50364164, decimal 10,610,804.
What flights does A1E874 operate?
Mode-S A1E874 has broadcast 1 distinct callsign, including N222AE.