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sensors Mode-S transponder

A5726D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N450DF · GRUMMAN S-2 Tracker · operated by USDA FOREST SERVICE FEPP, CALIFORNIA DEPT OF FORESTRY & FIRE PROTECTION

Hex
A5726D
Octal
51271155
Decimal
10,842,733
Country
US
Tail
N450DF
Type
S2P
No current signal · last broadcast 29d ago
Flights observed
124
Distinct callsigns
1
Country
US
Last broadcast
29d ago

Last known position

Most recent position reported by Mode-S A5726D.

Country allocation

The ICAO 24-bit address A5726D 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
CFR93 - 124 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CFR93 - Jul 26, 02:05 UTCJul 26, 02:35 UTC30m
2026-07-26 CFR93 RDD → RDD Jul 26, 01:15 UTCJul 26, 01:45 UTC30m
2026-07-25 CFR93 - Jul 25, 20:25 UTCJul 25, 20:50 UTC25m
2026-07-25 CFR93 - Jul 25, 19:15 UTCJul 25, 19:30 UTC15m
2026-07-25 CFR93 RDD → RDD Jul 25, 00:35 UTCJul 25, 01:00 UTC25m
2026-07-24 CFR93 - Jul 24, 22:35 UTCJul 24, 22:45 UTC10m
2026-07-24 CFR93 - Jul 24, 18:10 UTCJul 24, 18:25 UTC15m
2026-07-24 CFR93 - Jul 24, 00:55 UTCJul 24, 01:25 UTC30m
2026-07-23 CFR93 RDD → RDD Jul 23, 22:00 UTCJul 23, 22:20 UTC20m
2026-07-23 CFR93 - Jul 23, 02:40 UTCJul 23, 02:55 UTC15m
2026-07-22 CFR93 - Jul 22, 21:40 UTCJul 22, 22:10 UTC30m
2026-07-21 CFR93 - Jul 21, 00:45 UTCJul 21, 01:00 UTC15m
2026-07-20 CFR93 - Jul 20, 23:40 UTCJul 20, 23:55 UTC15m
2026-07-19 CFR93 - Jul 19, 21:15 UTCJul 19, 21:50 UTC35m
2026-07-19 CFR93 - Jul 19, 20:55 UTCJul 19, 21:05 UTC10m
2026-07-19 CFR93 - Jul 19, 17:25 UTCJul 19, 17:40 UTC15m
2026-07-19 CFR93 - Jul 19, 17:00 UTCJul 19, 17:10 UTC10m
2026-07-19 CFR93 - Jul 19, 16:35 UTCJul 19, 16:50 UTC15m
2026-07-19 CFR93 - Jul 19, 16:15 UTCJul 19, 16:25 UTC10m
2026-07-19 CFR93 - Jul 19, 15:50 UTCJul 19, 16:05 UTC15m
2026-07-19 CFR93 - Jul 19, 03:35 UTCJul 19, 03:45 UTC10m
2026-07-19 CFR93 - Jul 19, 03:10 UTCJul 19, 03:25 UTC15m
2026-07-19 CFR93 - Jul 19, 02:45 UTCJul 19, 03:00 UTC15m
2026-07-19 CFR93 - Jul 19, 02:20 UTCJul 19, 02:35 UTC15m
2026-07-19 CFR93 RDD → RDD Jul 19, 01:55 UTCJul 19, 02:10 UTC15m
2026-07-19 CFR93 - Jul 19, 01:30 UTCJul 19, 01:50 UTC20m
2026-07-18 CFR93 - Jul 18, 23:50 UTCJul 19, 00:30 UTC40m
2026-07-18 CFR93 - Jul 18, 23:25 UTCJul 18, 23:40 UTC15m
2026-07-18 CFR93 - Jul 18, 22:05 UTCJul 18, 22:20 UTC15m
2026-07-18 CFR93 - Jul 18, 18:45 UTCJul 18, 19:20 UTC35m
2026-07-17 CFR93 - Jul 17, 02:10 UTCJul 17, 02:25 UTC15m
2026-07-16 CFR93 - Jul 16, 23:25 UTCJul 16, 23:44 UTC20m
2026-07-15 CFR93 - Jul 15, 00:10 UTCJul 15, 00:50 UTC40m
2026-07-14 CFR93 - Jul 14, 23:25 UTCJul 14, 23:35 UTC10m
2026-07-13 CFR93 - Jul 13, 20:40 UTCJul 13, 20:55 UTC15m
2026-07-13 CFR93 - Jul 13, 17:00 UTCJul 13, 19:40 UTC2h 40m
2026-07-12 CFR93 - Jul 12, 18:55 UTCJul 12, 19:20 UTC25m
2026-07-12 CFR93 - Jul 12, 17:55 UTCJul 12, 18:20 UTC25m
2026-07-12 CFR93 - Jul 12, 16:25 UTCJul 12, 16:50 UTC25m
2026-07-12 CFR93 - Jul 12, 03:01 UTCJul 12, 03:40 UTC40m
2026-07-12 CFR93 - Jul 12, 01:45 UTCJul 12, 02:15 UTC30m
2026-07-12 CFR93 - Jul 12, 00:20 UTCJul 12, 01:10 UTC50m
2026-07-11 CFR93 - Jul 11, 23:10 UTCJul 11, 23:40 UTC30m
2026-07-11 CFR93 - Jul 11, 22:01 UTCJul 11, 22:15 UTC15m
2026-07-11 CFR93 - Jul 11, 19:20 UTCJul 11, 19:50 UTC30m
2026-07-10 CFR93 - Jul 10, 22:45 UTCJul 10, 23:15 UTC30m
2026-07-08 CFR93 - Jul 8, 01:55 UTCJul 8, 02:10 UTC15m
2026-07-07 CFR93 - Jul 7, 23:40 UTCJul 8, 00:05 UTC25m
2026-07-07 CFR93 - Jul 7, 22:55 UTCJul 7, 23:10 UTC15m
2026-07-07 CFR93 - Jul 7, 20:55 UTCJul 7, 21:20 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 N450DF page for operator, model, and routing details .

Mode-S A5726D frequently asked

What is Mode-S code A5726D?
A5726D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N450DF.
Where is Mode-S A5726D registered?
Mode-S code A5726D 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 A5726D broadcasting right now?
No active broadcast right now. Last signal was 29d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5726D, octal 51271155, decimal 10,842,733.
What flights does A5726D operate?
Mode-S A5726D has broadcast 1 distinct callsign, including CFR93.