Apparatus

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sensors Mode-S transponder

AAF621

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N805TH · CESSNA 208 Caravan · operated by AVION CAPITAL CORP

Hex
AAF621
Octal
52573041
Decimal
11,204,129
Country
US
Tail
N805TH
Type
C208
Broadcasting now · callsign CSJ916 · 10,075 ft
Flights observed
186
Distinct callsigns
8
Country
US
Last broadcast
1h ago

Current position

AAF621 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AAF621 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 8 distinct

Callsign Airline Flights Last seen
CSJ915 - 69 2026-07-16
CSJ672 - 42 2026-07-08
CSJ805 - 26 2026-07-01
CSJ726 - 21 2026-06-30
CSJ318 - 15 2026-07-15
CSJ1004 - 10 2026-07-06
CSJ916 - 2 2026-07-17
CSJ673 - 1 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CSJ916 - Jul 17, 23:30 UTCJul 18, 00:15 UTC45m
2026-07-17 CSJ916 - Jul 17, 20:50 UTCJul 17, 22:00 UTC1h 10m
2026-07-16 CSJ915 - Jul 16, 09:10 UTCJul 16, 11:50 UTC2h 40m
2026-07-16 CSJ915 - Jul 16, 08:10 UTCJul 16, 08:35 UTC25m
2026-07-16 CSJ915 - Jul 16, 05:50 UTCJul 16, 07:35 UTC1h 45m
2026-07-16 CSJ915 - Jul 16, 01:35 UTCJul 16, 02:35 UTC1h 0m
2026-07-15 CSJ915 - Jul 15, 23:35 UTCJul 16, 00:50 UTC1h 15m
2026-07-15 CSJ915 - Jul 15, 21:05 UTCJul 15, 22:15 UTC1h 10m
2026-07-15 CSJ318 - Jul 15, 04:05 UTCJul 15, 05:00 UTC55m
2026-07-15 CSJ318 - Jul 15, 00:50 UTCJul 15, 03:15 UTC2h 25m
2026-07-14 CSJ318 CAK → DPA Jul 14, 20:05 UTCJul 14, 22:10 UTC2h 5m
2026-07-10 CSJ915 - Jul 10, 23:45 UTCJul 11, 00:55 UTC1h 10m
2026-07-10 CSJ915 - Jul 10, 21:15 UTCJul 10, 22:25 UTC1h 10m
2026-07-10 CSJ915 - Jul 10, 09:35 UTCJul 10, 12:15 UTC2h 40m
2026-07-10 CSJ915 - Jul 10, 07:55 UTCJul 10, 08:20 UTC25m
2026-07-10 CSJ915 - Jul 10, 05:50 UTCJul 10, 07:30 UTC1h 40m
2026-07-10 CSJ915 - Jul 10, 01:40 UTCJul 10, 02:35 UTC55m
2026-07-09 CSJ915 - Jul 9, 23:40 UTCJul 10, 00:45 UTC1h 5m
2026-07-09 CSJ915 - Jul 9, 21:05 UTCJul 9, 22:20 UTC1h 15m
2026-07-09 CSJ915 - Jul 9, 09:10 UTCJul 9, 11:50 UTC2h 40m
2026-07-09 CSJ915 - Jul 9, 07:50 UTCJul 9, 08:15 UTC25m
2026-07-09 CSJ915 - Jul 9, 05:45 UTCJul 9, 07:25 UTC1h 40m
2026-07-09 CSJ915 - Jul 9, 01:50 UTCJul 9, 02:45 UTC55m
2026-07-09 CSJ915 - Jul 9, 00:10 UTCJul 9, 01:45 UTC1h 35m
2026-07-08 CSJ915 - Jul 8, 21:00 UTCJul 8, 22:15 UTC1h 15m
2026-07-08 CSJ672 - Jul 8, 03:15 UTCJul 8, 04:15 UTC1h 0m
2026-07-08 CSJ672 - Jul 8, 01:30 UTCJul 8, 02:30 UTC1h 0m
2026-07-07 CSJ672 - Jul 7, 03:20 UTCJul 7, 04:15 UTC55m
2026-07-07 CSJ672 - Jul 7, 01:30 UTCJul 7, 02:30 UTC1h 0m
2026-07-06 CSJ1004 - Jul 6, 21:05 UTCJul 6, 23:50 UTC2h 45m
2026-07-06 CSJ1004 - Jul 6, 17:15 UTCJul 6, 19:55 UTC2h 40m
2026-07-01 CSJ805 - Jul 1, 22:30 UTCJul 2, 00:50 UTC2h 20m
2026-07-01 CSJ805 CAK → MMU Jul 1, 04:30 UTCJul 1, 06:30 UTC2h 0m
2026-06-30 CSJ726 - Jun 30, 03:15 UTCJun 30, 04:10 UTC55m
2026-06-29 CSJ726 - Jun 29, 22:59 UTCJun 30, 01:04 UTC2h 5m
2026-06-29 CSJ726 - Jun 29, 19:54 UTCJun 29, 21:24 UTC1h 30m
2026-06-27 CSJ805 YHM → CAK Jun 27, 04:05 UTCJun 27, 05:04 UTC1h 0m
2026-06-27 CSJ673 - Jun 27, 02:04 UTCJun 27, 03:04 UTC1h 0m
2026-06-26 CSJ318 - Jun 26, 03:45 UTCJun 26, 04:24 UTC40m
2026-06-26 CSJ318 - Jun 26, 00:10 UTCJun 26, 03:00 UTC2h 50m
2026-06-25 CSJ318 - Jun 25, 20:59 UTCJun 25, 23:09 UTC2h 10m
2026-06-25 CSJ672 YHM → CAK Jun 25, 05:50 UTCJun 25, 07:15 UTC1h 25m
2026-06-25 CSJ672 - Jun 25, 01:24 UTCJun 25, 02:19 UTC55m
2026-06-24 CSJ805 - Jun 24, 21:50 UTCJun 25, 00:14 UTC2h 25m
2026-06-24 CSJ805 - Jun 24, 02:00 UTCJun 24, 05:54 UTC3h 55m
2026-06-23 CSJ805 - Jun 23, 22:29 UTCJun 24, 01:04 UTC2h 35m
2026-06-23 CSJ915 YHM → CAK Jun 23, 03:09 UTCJun 23, 04:05 UTC55m
2026-06-23 CSJ915 - Jun 23, 01:25 UTCJun 23, 02:34 UTC1h 10m
2026-06-22 CSJ915 - Jun 22, 23:45 UTCJun 23, 00:50 UTC1h 5m
2026-06-22 CSJ915 - Jun 22, 20:44 UTCJun 22, 22:10 UTC1h 25m

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 N805TH page for operator, model, and routing details .

Mode-S AAF621 frequently asked

What is Mode-S code AAF621?
AAF621 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N805TH.
Where is Mode-S AAF621 registered?
Mode-S code AAF621 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 AAF621 broadcasting right now?
Yes. Mode-S AAF621 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAF621, octal 52573041, decimal 11,204,129.
What flights does AAF621 operate?
Mode-S AAF621 has broadcast 8 distinct callsigns, including CSJ915, CSJ672, CSJ805, CSJ726, CSJ318.