sensors Mode-S transponder

AB04C5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N809RB · operated by ANDERSON ROSS C

Hex
AB04C5
Octal
52602305
Decimal
11,207,877
Country
US
Tail
N809RB
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
36
Distinct callsigns
2
Country
US
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S AB04C5.

Country allocation

The ICAO 24-bit address AB04C5 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 2 distinct

Callsign Airline Flights Last seen
N809RB - 24 2026-07-24
N3842M - 12 2026-07-26

Recent flights last 36

DateFlightRouteTakeoffLandingDuration
2026-07-26 N3842M - Jul 26, 20:50 UTCJul 26, 21:10 UTC20m
2026-07-25 N3842M - Jul 25, 01:40 UTCJul 25, 02:00 UTC20m
2026-07-24 N809RB - Jul 24, 21:15 UTCJul 24, 22:00 UTC45m
2026-07-24 N809RB - Jul 24, 20:05 UTCJul 24, 20:35 UTC30m
2026-07-24 N809RB - Jul 24, 17:20 UTCJul 24, 19:10 UTC1h 50m
2026-07-24 N809RB - Jul 24, 14:45 UTCJul 24, 16:15 UTC1h 30m
2026-07-19 N809RB - Jul 19, 21:10 UTCJul 19, 21:20 UTC10m
2026-07-19 N809RB - Jul 19, 18:55 UTCJul 19, 20:25 UTC1h 30m
2026-07-19 N809RB - Jul 19, 15:55 UTCJul 19, 17:35 UTC1h 40m
2026-07-19 N809RB - Jul 19, 12:25 UTCJul 19, 12:55 UTC30m
2026-07-19 N3842M - Jul 19, 00:50 UTCJul 19, 01:05 UTC15m
2026-07-16 N809RB - Jul 16, 15:25 UTCJul 16, 15:35 UTC10m
2026-07-14 N3842M - Jul 14, 00:15 UTCJul 14, 00:30 UTC15m
2026-07-13 N3842M - Jul 13, 17:30 UTCJul 13, 17:55 UTC25m
2026-07-06 N3842M - Jul 6, 23:15 UTCJul 7, 00:35 UTC1h 20m
2026-07-06 N3842M - Jul 6, 15:30 UTCJul 6, 17:00 UTC1h 30m
2026-07-03 N3842M - Jul 3, 22:10 UTCJul 3, 22:30 UTC20m
2026-07-02 N3842M - Jul 2, 19:30 UTCJul 2, 19:50 UTC20m
2026-06-30 N3842M - Jun 30, 22:30 UTCJun 30, 22:50 UTC20m
2026-06-29 N3842M - Jun 29, 01:14 UTCJun 29, 01:39 UTC25m
2026-06-28 N3842M - Jun 28, 15:40 UTCJun 28, 15:49 UTC10m
2026-06-24 N809RB - Jun 24, 21:09 UTCJun 24, 21:29 UTC20m
2026-06-23 N809RB - Jun 23, 16:54 UTCJun 23, 17:15 UTC20m
2026-06-14 N809RB - Jun 14, 14:00 UTCJun 14, 16:00 UTC2h 0m
2026-06-11 N809RB - Jun 11, 14:25 UTCJun 11, 15:45 UTC1h 20m
2026-06-11 N809RB - Jun 11, 13:10 UTCJun 11, 13:20 UTC10m
2026-06-05 N809RB - Jun 5, 16:45 UTCJun 5, 17:35 UTC50m
2026-06-05 N809RB - Jun 5, 13:25 UTCJun 5, 14:10 UTC45m
2026-06-01 N809RB - Jun 1, 14:05 UTCJun 1, 14:40 UTC35m
2026-05-30 N809RB - May 30, 13:15 UTCMay 30, 13:55 UTC40m
2026-05-15 N809RB - May 15, 12:20 UTCMay 15, 12:30 UTC10m
2026-05-01 N809RB - May 1, 15:15 UTCMay 1, 15:50 UTC35m
2026-04-27 N809RB - Apr 27, 14:40 UTCApr 27, 15:20 UTC40m
2026-04-23 N809RB - Apr 23, 14:35 UTCApr 23, 15:15 UTC40m
2026-04-17 N809RB - Apr 17, 15:20 UTCApr 17, 15:35 UTC15m
2026-04-17 N809RB - Apr 17, 15:05 UTCApr 17, 15:15 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 N809RB page for operator, model, and routing details .

Mode-S AB04C5 frequently asked

What is Mode-S code AB04C5?
AB04C5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N809RB.
Where is Mode-S AB04C5 registered?
Mode-S code AB04C5 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 AB04C5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB04C5, octal 52602305, decimal 11,207,877.
What flights does AB04C5 operate?
Mode-S AB04C5 has broadcast 2 distinct callsigns, including N809RB, N3842M.