Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A1C4B2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N213AL · PILATUS PC-12 · operated by AIR METHODS LLC

Hex
A1C4B2
Octal
50342262
Decimal
10,601,650
Country
US
Tail
N213AL
Type
PC12
No current signal · last broadcast Jul 26, 21:50 UTC
Flights observed
170
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 21:50 UTC

Last known position

Most recent position reported by Mode-S A1C4B2.

Country allocation

The ICAO 24-bit address A1C4B2 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
N213AL - 170 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N213AL - Jul 26, 21:05 UTCJul 26, 21:45 UTC40m
2026-07-26 N213AL - Jul 26, 07:30 UTCJul 26, 07:45 UTC15m
2026-07-26 N213AL - Jul 26, 05:30 UTCJul 26, 05:50 UTC20m
2026-07-25 N213AL - Jul 25, 23:35 UTCJul 25, 23:55 UTC20m
2026-07-25 N213AL - Jul 25, 21:05 UTCJul 25, 21:30 UTC25m
2026-07-25 N213AL - Jul 25, 07:40 UTCJul 25, 08:00 UTC20m
2026-07-25 N213AL - Jul 25, 04:50 UTCJul 25, 05:35 UTC45m
2026-07-25 N213AL - Jul 25, 03:15 UTCJul 25, 03:25 UTC10m
2026-07-24 N213AL - Jul 24, 22:15 UTCJul 24, 22:35 UTC20m
2026-07-24 N213AL - Jul 24, 19:40 UTCJul 24, 20:10 UTC30m
2026-07-24 N213AL - Jul 24, 09:30 UTCJul 24, 09:55 UTC25m
2026-07-24 N213AL - Jul 24, 07:55 UTCJul 24, 08:15 UTC20m
2026-07-24 N213AL - Jul 24, 01:15 UTCJul 24, 01:40 UTC25m
2026-07-23 N213AL - Jul 23, 22:45 UTCJul 24, 00:10 UTC1h 25m
2026-07-23 N213AL - Jul 23, 17:55 UTCJul 23, 19:05 UTC1h 10m
2026-07-23 N213AL - Jul 23, 16:30 UTCJul 23, 16:55 UTC25m
2026-07-22 N213AL - Jul 22, 03:40 UTCJul 22, 04:05 UTC25m
2026-07-22 N213AL - Jul 22, 01:50 UTCJul 22, 02:10 UTC20m
2026-07-22 N213AL - Jul 22, 00:00 UTCJul 22, 00:25 UTC25m
2026-07-21 N213AL - Jul 21, 21:55 UTCJul 21, 22:30 UTC35m
2026-07-18 N213AL - Jul 18, 20:50 UTCJul 18, 21:05 UTC15m
2026-07-18 N213AL - Jul 18, 18:10 UTCJul 18, 18:40 UTC30m
2026-07-18 N213AL - Jul 18, 14:40 UTCJul 18, 15:00 UTC20m
2026-07-18 N213AL - Jul 18, 12:25 UTCJul 18, 13:00 UTC35m
2026-07-18 N213AL - Jul 18, 05:50 UTCJul 18, 06:25 UTC35m
2026-07-18 N213AL - Jul 18, 04:05 UTCJul 18, 04:25 UTC20m
2026-07-17 N213AL - Jul 17, 22:10 UTCJul 17, 22:29 UTC20m
2026-07-17 N213AL - Jul 17, 21:10 UTCJul 17, 21:30 UTC20m
2026-07-17 N213AL - Jul 17, 18:10 UTCJul 17, 18:29 UTC20m
2026-07-17 N213AL - Jul 17, 17:15 UTCJul 17, 17:35 UTC20m
2026-07-17 N213AL - Jul 17, 14:24 UTCJul 17, 14:39 UTC15m
2026-07-17 N213AL - Jul 17, 12:00 UTCJul 17, 12:50 UTC50m
2026-07-17 N213AL - Jul 17, 10:25 UTCJul 17, 10:40 UTC15m
2026-07-17 N213AL - Jul 17, 07:40 UTCJul 17, 08:00 UTC20m
2026-07-17 N213AL - Jul 17, 05:15 UTCJul 17, 05:39 UTC25m
2026-07-17 N213AL - Jul 17, 02:34 UTCJul 17, 02:59 UTC25m
2026-07-17 N213AL - Jul 17, 01:29 UTCJul 17, 01:59 UTC30m
2026-07-16 N213AL - Jul 16, 22:35 UTCJul 16, 23:49 UTC1h 15m
2026-07-15 N213AL - Jul 15, 19:50 UTCJul 15, 20:20 UTC30m
2026-07-15 N213AL - Jul 15, 18:00 UTCJul 15, 18:20 UTC20m
2026-07-15 N213AL - Jul 15, 08:35 UTCJul 15, 09:00 UTC25m
2026-07-15 N213AL - Jul 15, 06:25 UTCJul 15, 06:45 UTC20m
2026-07-15 N213AL - Jul 15, 02:05 UTCJul 15, 02:30 UTC25m
2026-07-14 N213AL - Jul 14, 23:15 UTCJul 15, 00:30 UTC1h 15m
2026-07-14 N213AL - Jul 14, 22:00 UTCJul 14, 22:40 UTC40m
2026-07-14 N213AL - Jul 14, 16:25 UTCJul 14, 18:35 UTC2h 10m
2026-07-14 N213AL - Jul 14, 11:35 UTCJul 14, 12:00 UTC25m
2026-07-14 N213AL - Jul 14, 09:20 UTCJul 14, 09:45 UTC25m
2026-07-12 N213AL - Jul 12, 18:55 UTCJul 12, 19:20 UTC25m
2026-07-12 N213AL - Jul 12, 16:50 UTCJul 12, 17:15 UTC25m

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 N213AL page for operator, model, and routing details .

Mode-S A1C4B2 frequently asked

What is Mode-S code A1C4B2?
A1C4B2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N213AL.
Where is Mode-S A1C4B2 registered?
Mode-S code A1C4B2 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 A1C4B2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1C4B2, octal 50342262, decimal 10,601,650.
What flights does A1C4B2 operate?
Mode-S A1C4B2 has broadcast 1 distinct callsign, including N213AL.