Apparatus

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sensors Mode-S transponder

A57D92

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N453DF · operated by AIR METHODS LLC

Hex
A57D92
Octal
51276622
Decimal
10,845,586
Country
US
Tail
N453DF
Type
H60
No current signal · last broadcast 1d ago
Flights observed
72
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A57D92.

Country allocation

The ICAO 24-bit address A57D92 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
CFR615 - 72 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 CFR615 - Jul 16, 16:15 UTCJul 16, 17:45 UTC1h 30m
2026-07-12 CFR615 - Jul 12, 01:20 UTCJul 12, 01:40 UTC20m
2026-07-11 CFR615 - Jul 11, 23:05 UTCJul 11, 23:25 UTC20m
2026-07-11 CFR615 - Jul 11, 21:05 UTCJul 11, 21:25 UTC20m
2026-07-10 CFR615 - Jul 10, 22:40 UTCJul 10, 23:15 UTC35m
2026-07-09 CFR615 - Jul 9, 00:50 UTCJul 9, 01:05 UTC15m
2026-07-08 CFR615 - Jul 8, 18:50 UTCJul 8, 19:05 UTC15m
2026-07-05 CFR615 - Jul 5, 17:30 UTCJul 5, 17:55 UTC25m
2026-07-03 CFR615 - Jul 3, 22:15 UTCJul 3, 23:25 UTC1h 10m
2026-07-01 CFR615 - Jul 1, 19:30 UTCJul 1, 20:05 UTC35m
2026-06-30 CFR615 - Jun 30, 20:05 UTCJun 30, 20:15 UTC10m
2026-06-28 CFR615 - Jun 28, 16:49 UTCJun 28, 18:34 UTC1h 45m
2026-06-22 CFR615 - Jun 22, 17:00 UTCJun 22, 17:25 UTC25m
2026-06-21 CFR615 - Jun 21, 17:24 UTCJun 21, 18:00 UTC35m
2026-06-21 CFR615 - Jun 21, 02:04 UTCJun 21, 02:15 UTC10m
2026-06-21 CFR615 - Jun 21, 01:10 UTCJun 21, 01:19 UTC10m
2026-06-20 CFR615 - Jun 20, 22:05 UTCJun 20, 22:45 UTC40m
2026-06-19 CFR615 - Jun 19, 19:49 UTCJun 19, 23:34 UTC3h 45m
2026-06-18 CFR615 - Jun 18, 18:25 UTCJun 18, 18:45 UTC20m
2026-06-18 CFR615 - Jun 18, 17:21 UTCJun 18, 17:30 UTC9m
2026-06-17 CFR615 - Jun 17, 21:10 UTCJun 17, 22:05 UTC55m
2026-06-14 CFR615 - Jun 14, 22:00 UTCJun 14, 22:10 UTC10m
2026-06-14 CFR615 - Jun 14, 17:15 UTCJun 14, 17:30 UTC15m
2026-06-13 CFR615 - Jun 13, 18:30 UTCJun 13, 18:40 UTC10m
2026-06-13 CFR615 - Jun 13, 17:30 UTCJun 13, 17:40 UTC10m
2026-06-12 CFR615 - Jun 12, 16:45 UTCJun 12, 18:01 UTC1h 15m
2026-06-10 CFR615 - Jun 10, 18:30 UTCJun 10, 18:50 UTC20m
2026-06-10 CFR615 - Jun 10, 17:10 UTCJun 10, 17:20 UTC10m
2026-06-08 CFR615 - Jun 8, 17:05 UTCJun 8, 17:15 UTC10m
2026-06-07 CFR615 - Jun 7, 17:00 UTCJun 7, 18:50 UTC1h 50m
2026-06-03 CFR615 - Jun 3, 22:20 UTCJun 3, 22:45 UTC25m
2026-06-01 CFR615 - Jun 1, 18:25 UTCJun 1, 19:05 UTC40m
2026-06-01 CFR615 - Jun 1, 17:25 UTCJun 1, 17:45 UTC20m
2026-05-30 CFR615 - May 30, 20:10 UTCMay 30, 20:20 UTC10m
2026-05-30 CFR615 - May 30, 18:35 UTCMay 30, 19:05 UTC30m
2026-05-30 CFR615 - May 30, 17:40 UTCMay 30, 17:50 UTC10m
2026-05-22 CFR615 - May 22, 18:25 UTCMay 22, 18:40 UTC15m
2026-05-22 CFR615 - May 22, 17:10 UTCMay 22, 17:25 UTC15m
2026-05-21 CFR615 - May 21, 17:20 UTCMay 21, 17:30 UTC10m
2026-05-18 CFR615 - May 18, 20:45 UTCMay 18, 22:10 UTC1h 25m
2026-05-16 CFR615 - May 16, 18:00 UTCMay 16, 18:25 UTC25m
2026-05-16 CFR615 - May 16, 16:45 UTCMay 16, 16:55 UTC10m
2026-05-15 CFR615 - May 15, 03:00 UTCMay 15, 03:10 UTC10m
2026-05-14 CFR615 - May 14, 19:00 UTCMay 14, 20:50 UTC1h 50m
2026-05-13 CFR615 - May 13, 20:30 UTCMay 13, 20:40 UTC10m
2026-05-13 CFR615 - May 13, 19:00 UTCMay 13, 19:20 UTC20m
2026-05-13 CFR615 - May 13, 01:35 UTCMay 13, 02:25 UTC50m
2026-05-12 CFR615 - May 12, 23:45 UTCMay 13, 00:40 UTC55m
2026-05-12 CFR615 - May 12, 21:50 UTCMay 12, 23:10 UTC1h 20m
2026-05-09 CFR615 - May 9, 18:25 UTCMay 9, 18:50 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 N453DF page for operator, model, and routing details .

Mode-S A57D92 frequently asked

What is Mode-S code A57D92?
A57D92 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N453DF.
Where is Mode-S A57D92 registered?
Mode-S code A57D92 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 A57D92 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A57D92, octal 51276622, decimal 10,845,586.
What flights does A57D92 operate?
Mode-S A57D92 has broadcast 1 distinct callsign, including CFR615.